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Expert: Alfred L. Gardner

ITIS records citing expert
 
 Kingdom Animalia
  Acinonychinae Pocock, 1917 -- invalid
  Acinonyx Brookes, 1828 -- valid
  Acinonyx jubatus (Schreber, 1775) -- valid -- Cheetah
  Acinonyx rex Pocock, 1927 -- invalid
  Acrobates pygmaeus (Shaw, 1793) -- valid -- Feather-tailed Glider
  Aepyprymnus Garrod, 1875 -- valid -- rufous rat-kangaroos
  Alces Gray, 1821 -- valid -- moose, Old World elk
  Alces alces (Linnaeus, 1758) -- valid -- Eurasian Elk, moose, orignal
  Alopex Kaup, 1829 -- invalid -- Arctic foxes
  Alopex lagopus (Linnaeus, 1758) -- invalid -- Arctic Fox, renard arctique
  Ammospermophilus Merriam, 1892 -- valid -- Antelope Squirrels
  Ammospermophilus harrisii (Audubon and Bachman, 1854) -- valid -- Ardilla-antilope de Sonora, Harris' antelope squirrel, Harris's Antelope Squirrel
  Ammospermophilus interpres (Merriam, 1890) -- valid -- Ardilla-antilope texana, Texas Antelope Squirrel
  Ammospermophilus leucurus (Merriam, 1889) -- valid -- Ardilla-antílope cola blanca, White-tailed Antelope Squirrel
  Ammospermophilus nelsoni (Merriam, 1893) -- valid -- Nelson's antelope ground squirrel, Nelson's Antelope Squirrel, San Joaquin antelope ground squirrel, San Joaquin antelope squirrel
  Ammotragus Blyth, 1840 -- valid -- Barbary sheep
  Ammotragus lervia (Pallas, 1777) -- valid -- aoudad, Barbary sheep, Barbary Sheep
  Antilocapra Ord, 1818 -- valid
  Antilocapra americana (Ord, 1815) -- valid -- Berrendo, Pronghorn, pronghorn
  Antilocapra americana americana (Ord, 1815) -- valid
  Antilocapra americana mexicana Merriam, 1901 -- valid
  Antilocapra americana oregona V. Bailey, 1932 -- valid
  Antilocapra americana peninsularis Nelson, 1912 -- valid -- peninsular pronghorn
  Antilocapra americana sonoriensis Goldman, 1945 -- valid -- Sonoran Pronghorn
  Antilocapra anteflexa Gray, 1855 -- invalid
  Antilocapridae Gray, 1866 -- valid -- pronghorns
  Antilope Pallas, 1766 -- valid -- blackbucks
  Antilope americana Ord, 1815 -- invalid
  Antilope cervicapra (Linnaeus, 1758) -- valid -- blackbuck, Blackbuck
  Antilopinae Gray, 1821 -- valid
  Antrozous H. Allen, 1862 -- valid -- pallid bats
  Antrozous pallidus (LeConte, 1856) -- valid -- Murciélago-desértico norteño, Pallid Bat, pallid bat
  Aorotrema humboldti -- valid
  Aplodontia Richardson, 1829 -- valid -- Mountain Beaver
  Aplodontia chryseola L. Kellogg, 1914 -- invalid
  Aplodontia humboldtiana Taylor, 1916 -- invalid
  Aplodontia major rainieri Merriam, 1899 -- invalid
  Aplodontia nigra Taylor, 1914 -- invalid
  Aplodontia olympica Merriam, 1899 -- invalid
  Aplodontia pacifica Merriam, 1899 -- invalid
  Aplodontia phaea Merriam, 1899 -- invalid
  Aplodontia rufa (Rafinesque, 1817) -- valid -- Mountain Beaver, Sewellel
  Aplodontia rufa californica (Peters, 1864) -- valid
  Aplodontia rufa grisea Taylor, 1916 -- invalid
  Aplodontia rufa humboldtiana Taylor, 1916 -- valid
  Aplodontia rufa nigra Taylor, 1914 -- valid -- Point Arena Mountain Beaver
  Aplodontia rufa pacifica Merriam, 1899 -- valid
  Aplodontia rufa phaea Merriam, 1899 -- valid
  Aplodontia rufa rainieri Merriam, 1899 -- valid
  Aplodontia rufa rufa (Rafinesque, 1817) -- valid
  Aplodontiidae Brandt, 1855 -- valid -- Mountain Beavers
  Arborimus Taylor, 1915 -- valid -- Tree Voles
  Arborimus albipes (Merriam, 1901) -- valid -- White-footed Vole
  Arborimus longicaudus (True, 1890) -- valid -- Red Tree Vole, Reddish Tree Mouse
  Arborimus pomo Johnson and George, 1991 -- valid -- Sonoma Tree Vole
  Arctocephalus É. Geoffroy Saint-Hilaire and F. Cuvier, 1826 -- valid -- southern fur seals
  Arctocephalus australis (Zimmermann, 1783) -- valid -- South American Fur Seal
  Arctocephalus forsteri (Lesson, 1828) -- valid -- Antipodean fur seal, Australasian Fur Seal, black fur seal, New Zealand fur seal, South Australian fur seal
  Arctocephalus galapagoensis Heller, 1904 -- valid -- Galapagos Fur Seal, Galápagos fur seal
  Arctocephalus gazella (Peters, 1875) -- valid -- Antarctic Fur Seal, Kerguelen fur seal
  Arctocephalus monteriensis Gray, 1859 -- invalid
  Arctocephalus philippii (Peters, 1866) -- valid -- Juan Fernández Fur Seal
  Arctocephalus pusillus (Schreber, 1775) -- valid -- Brown Fur Seal, Cape fur seal, giant fur seal, South African fur seal, Tasmanian fur seal
  Arctocephalus townsendi Merriam, 1897 -- valid -- Guadalupe Fur Seal, Lobo-fino de Guadalupe
  Arctocephalus tropicalis (J. E. Gray, 1872) -- valid -- Amsterdam fur seal, Subantarctic Fur Seal
  Arctophoca townsendi (Merriam, 1897) -- invalid
  Artibeus Leach, 1821 -- valid -- fruit-eating bats
  Artibeus hartii Thomas, 1892 -- invalid -- Hart's fruit-eating bat, velvety fruit-eating bat
  Artibeus jamaicensis Leach, 1821 -- valid -- Jamaican fruit-eating bat, Jamaican Fruit-eating Bat, Murciélago-frutero de Jamaica
  Artiodactyla Owen, 1848 -- valid -- artiodactyls, cloven-hoofed ungulates, even-toed ungulates, porco do mato, veado
  Arvicola Lacépède, 1799 -- valid -- Water Voles
  Arvicola austerus Le Conte, 1853 -- invalid
  Arvicola curtata Cope, 1868 -- invalid
  Arvicola decurtata Coues, 1877 -- invalid
  Arvicola richardsoni DeKay, 1842 -- invalid
  Arvicola trimucronatus Richardson, 1825 -- invalid
  Arvicolinae Gray, 1821 -- valid -- arvicoline rodents
  Atelocynus Cabrera, 1940 -- valid
  Atelocynus microtis (Sclater, 1883) -- valid -- Short-eared Dog, small eared zorro, Small-eared Dog
  Australophocaena Barnes, 1985 -- invalid
  Australophocaena dioptrica (Lahille, 1912) -- invalid -- Spectacled Porpoise
  Axis C. H. Smith, 1827 -- valid -- axis deer
  Axis axis (Erxleben, 1777) -- valid -- axis deer, chital, Chital
  Baiomys True, 1894 -- valid -- American Pygmy Mice, Pygmy Mice
  Baiomys taylori (Thomas, 1887) -- valid -- Northern Pygmy Mouse, Ratón-pigmeo norteño
  Balaena Linnaeus, 1758 -- valid -- right whales
  Balaena glacialis Müller, 1776 -- invalid -- black right whale, black whale, right whale
  Balaena mysticetus Linnaeus, 1758 -- valid -- baleine boréale, black right whale, Bowhead, bowhead whale
  Balaenidae Gray, 1821 -- valid -- bowhead whales, right whales
  Balaenoptera Lacépède, 1804 -- valid -- baleen whales, finback whales, rorquals
  Balaenoptera acutorostrata Lacépède, 1804 -- valid -- Ballena menor, Common Minke Whale, Minke Whale, northern minke whale, petit rorqual
  Balaenoptera borealis Lesson, 1828 -- valid -- Ballena de Sei, rorqual boréal, Sei Whale
  Balaenoptera edeni Anderson, 1879 -- valid -- Ballena tropical, Eden's whale
  Balaenoptera musculus (Linnaeus, 1758) -- valid -- Ballena azul, Blue Whale, rorqual bleu
  Balaenoptera physalus (Linnaeus, 1758) -- valid -- Ballena de aleta, Fin Whale, finback whale, rorqual commun
  Balaenopteridae Gray, 1864 -- valid -- rorquals
  Bassariscus Coues, 1887 -- valid -- ringtails
  Bassariscus astutus (Lichtenstein, 1830) -- valid -- Cacomixtle norteño, Ringtail
  Berardius Duvernoy, 1851 -- valid -- giant beaked whales, giant bottle-nosed whales
  Berardius arnuxii Duvernoy, 1851 -- valid -- Arnoux's Beaked Whale, Arnux's beaked whale
  Berardius bairdii Stejneger, 1883 -- valid -- Baird's Beaked Whale, north Pacific bottle-nosed whale
  Bison C. H. Smith, 1827 -- valid -- bison
  Bison americanus Brisson, 1762 -- invalid
  Bison americanus pennsylvanicus Shoemaker, 1915 -- invalid
  Bison bison (Linnaeus, 1758) -- valid -- American bison, American Bison, bison, Bisonte americano
  Bison bison bison (Linnaeus, 1758) -- invalid -- bison, plains bison
  Bison bison septemtrionalis Figgins, 1933 -- invalid
  Bison bonasus (Linnaeus, 1758) -- valid -- European bison, European Bison, wisent
  Bison sylvestris Hay, 1915 -- invalid
  Blarina Gray, 1838 -- valid -- American short-tailed shrews
  Blarina brevicauda (Say, 1823) -- valid -- grande musaraigne, mole shrew, Northern Short-tailed Shrew, short-tailed shrew
  Blarina carolinensis (Bachman, 1837) -- valid -- Southern Short-tailed Shrew
  Blarina hylophaga Elliot, 1899 -- valid -- Elliot's Short-tailed Shrew
  Blarina telmalestes Merriam, 1895 -- invalid
  Bos Linnaeus, 1758 -- valid -- oxen, true cattle
  Bos banteng Wagner, 1844 -- invalid -- banteng
  Bos bison Linnaeus, 1758 -- invalid -- American bison, bison
  Bos bonasus Linnaeus, 1758 -- invalid -- wisent
  Bos frontalis Lambert, 1804 -- valid -- gaur, Gaur, gayal, mithan
  Bos gaurus C. H. Smith, 1827 -- invalid -- gaur, seledang
  Bos grunniens Linnaeus, 1766 -- valid -- domestic yak, grunting ox, yak, Yak
  Bos grunniens grunniens Linnaeus, 1766 -- valid
  Bos grunniens mutus (Przewalski, 1883) -- valid -- wild yak
  Bos indicus Linnaeus, 1758 -- invalid -- Brahma cattle, zebu cattle
  Bos javanicus d'Alton, 1823 -- valid -- banteng, Banteng, tsaine
  Bos primigenius Bojanus, 1827 -- invalid -- aurochs, urus, wild ox
  Bos sauveli Urbain, 1937 -- valid -- kouprey, Kouprey
  Bos taurus Linnaeus, 1758 -- valid -- aurochs, Aurochs, domestic cattle (feral), domesticated cattle
  Boselaphus Blainville, 1816 -- valid -- nilgai
  Boselaphus tragocamelus (Pallas, 1766) -- valid -- blue bull, nilgai, Nilgai
  Bovidae Gray, 1821 -- valid -- antelopes, bovids, cattle, goats, sheep
  Bovinae Gray, 1821 -- valid
  Brachylagus Miller, 1900 -- valid -- pygmy rabbits
  Brachylagus idahoensis (Merriam, 1891) -- valid -- Pygmy Rabbit
  Brachyphylla Gray, 1834 -- valid -- Antillean fruit-eating bats
  Brachyphylla cavernarum Gray, 1834 -- valid -- Antillean fruit-eating bat, Antillean Fruit-eating Bat, antillian fruit-eating bat
  Brachyphyllinae Gray, 1866 -- invalid
  Bradypodidae Gray, 1821 -- valid -- Three-toed Sloths
  Bradypus Linnaeus, 1758 -- valid
  Bradypus torquatus Illiger, 1811 -- valid -- Brazilian three-toed sloth, Maned Sloth, Maned Three-toed Sloth
  Bradypus tridactylus Linnaeus, 1758 -- valid -- Pale-throated Sloth, Pale-throated Three-toed Sloth
  Bradypus variegatus Schinz, 1825 -- valid -- Brown-throated Sloth, Brown-throated Three-toed Sloth
  Bubalus C. H. Smith, 1827 -- valid -- water buffalos
  Bubalus bubalis (Linnaeus, 1758) -- valid -- domestic water buffalo, Water Buffalo, water buffalo, water buffalo (feral)
  Cabassous McMurtrie, 1831 -- valid -- Naked-tailed Armadillos
  Cabassous centralis (Miller, 1899) -- valid -- Northern Naked-tailed Armadillo
  Cabassous chacoensis Wetzel, 1980 -- valid -- Chacoan Naked-tailed Armadillo
  Cabassous tatouay (Desmarest, 1804) -- valid -- Greater Naked-tailed Armadillo
  Cabassous unicinctus (Linnaeus, 1758) -- valid -- Southern Naked-tailed Armadillo
  Caenolestes Thomas, 1895 -- valid -- common shrew opossums
  Caenolestes caniventer Anthony, 1921 -- valid -- Gray-bellied Caenolestid
  Caenolestes convelatus Anthony, 1924 -- valid -- Northern Caenolestid
  Caenolestes fuliginosus (Tomes, 1863) -- valid -- Dusky Caenolestid
  Caenolestidae Trouessart, 1898 -- valid -- shrew opossums
  Callorhinus J. E. Gray, 1859 -- valid -- northern fur seals
  Callorhinus ursinus (Linnaeus, 1758) -- valid -- Northern Fur Seal
  Caluromyinae Kirsch, 1977 -- valid
  Caluromys J. A. Allen, 1900 -- valid -- woolly opossum
  Caluromys derbianus (Waterhouse, 1841) -- valid -- Derby's Woolly Opossum
  Caluromys lanatus (Olfers, 1818) -- valid -- Brown-eared Woolly Opossum
  Caluromys philander (Linnaeus, 1758) -- valid -- Bare-tailed Woolly Opossum
  Caluromysiops Sanborn, 1951 -- valid -- black-shouldered opossums
  Caluromysiops irrupta Sanborn, 1951 -- valid -- Black-shouldered Opossum
  Canidae Fischer, 1817 -- valid -- coyotes, dogs, foxes, jackals, wolves
  Caniformia Kretzoi, 1938 -- valid -- dog-like carnivores
  Canis Linnaeus, 1758 -- valid -- dogs, foxes, jackals
  Canis adustus Sundevall, 1847 -- valid -- Side-striped Jackal
  Canis aureus Linnaeus, 1758 -- valid -- Eurasian Golden Jackal, Golden Jackal
  Canis dingo Blumenbach, 1780 -- invalid -- Dingo
  Canis familiaris Linnaeus, 1758 -- invalid -- domestic dog, domestic dog (feral)
  Canis latrans Say, 1823 -- valid -- Coyote, coyote, Coyote
  Canis lupus Linnaeus, 1758 -- valid -- Gray Wolf, Lobo gris, loup, Wolf
  Canis lupus lupus Linnaeus, 1758 -- valid
  Canis lupus lycaon Schreber, 1775 -- valid
  Canis mesomelas Schreber, 1775 -- valid -- Black-backed Jackal
  Canis rufus Audubon and Bachman, 1851 -- invalid -- Red Wolf
  Caperea Gray, 1864 -- valid -- pygmy right whales
  Caperea marginata (Gray, 1846) -- valid -- Pygmy Right Whale
  Capra Linnaeus, 1758 -- valid -- goats
  Capra hircus Linnaeus, 1758 -- valid -- domestic goat, Goat, goat (feral)
  Capreolinae Brookes, 1828 -- valid
  Caprinae Gray, 1821 -- valid
  Capromyidae Smith, 1842 -- valid -- capromyid rodents
  Caracal Gray, 1843 -- valid
  Caracal caracal (Schreber, 1776) -- valid -- Caracal
  Carnivora Bowdich, 1821 -- valid -- cachorro do mato, carnivores, carnivores, carnívoro, gato do mato, lontra
  Castor Linnaeus, 1758 -- valid -- beavers
  Castor canadensis Kuhl, 1820 -- valid -- American Beaver, castor, Castor Americano
  Castor zibethicus Linnaeus, 1766 -- invalid
  Castoridae Hemprich, 1820 -- valid -- Beavers
  Cebidae Bonaparte, 1831 -- valid -- new world monkeys
  Cebinae Bonaparte, 1831 -- valid -- capuchin monkeys
  Cephalophinae Blyth, 1863 -- valid
  Cephalophus C. H. Smith, 1827 -- valid -- forest duikers
  Cephalophus niger Gray, 1846 -- valid -- black duiker, Black Duiker
  Cephalophus silvicultor (Afzelius, 1815) -- valid -- ligit-backed duiker, yellow-backed duiker, Yellow-backed Duiker
  Cephalophus zebra Gray, 1838 -- valid -- striped-backed duiker, zebra duiker, Zebra Duiker
  Cephalorhynchus Gray, 1846 -- valid -- piebald dolphins
  Cephalorhynchus commersonii (Lacépède, 1804) -- valid -- Commerson's Dolphin, piebald dolphin
  Cephalorhynchus eutropia (Gray, 1846) -- valid -- Black Dolphin, Chilean Dolphin
  Cephalorhynchus heavisidii (Gray, 1828) -- valid -- Haviside's Dolphin, Heaviside's Dolphin
  Cephalorhynchus hectori (P.-J. van Bénéden, 1881) -- valid -- Hector's Dolphin
  Cercopithecidae Gray, 1821 -- valid -- Old World monkeys
  Cercopithecinae Gray, 1821 -- valid -- cercopithecines
  Cerdocyon C. E. H. Smith, 1839 -- valid
  Cerdocyon thous (Linnaeus, 1766) -- valid -- Crab-eating Fox
  Cervidae Goldfuss, 1820 -- valid -- caribou, cervids, deer, moose, wapiti
  Cervinae Goldfuss, 1820 -- valid
  Cervus Linnaeus, 1758 -- valid -- deer, red deer, wapiti
  Cervus elaphus Linnaeus, 1758 -- valid -- Ciervo común, elk, Red Deer (see comments), wapiti, wapiti, wapiti or elk
  Cervus elaphus barbarus Bennett, 1833 -- valid -- Barbary deer, Barbary stag
  Cervus elaphus elaphus Linnaeus, 1758 -- valid -- wapiti
  Cervus elaphus hanglu Wagner, 1844 -- valid -- Kashmir stag
  Cervus leucurus Douglas, 1829 -- invalid
  Cervus mariannus Desmarest, 1822 -- invalid -- Philippine brown deer, Philippine deer, Philippine sambar
  Cervus nippon Temminck, 1838 -- valid -- Sika, Sika deer
  Cetacea Brisson, 1762 -- valid -- baleia, baleines, cetaceans, cetáceo, cétacés, dauphins, dolphins, golfinho, mammfères marins, marine mammals, marsouins, porpoises, whales
  Chaetodipus Merriam, 1889 -- valid -- Coarse-haired Pocket Mice, hispid pocket mice
  Chaetodipus baileyi (Merriam, 1894) -- valid -- Bailey's Pocket Mouse, Ratón-de abazones Sonorense
  Chaetodipus californicus (Merriam, 1889) -- valid -- California Pocket Mouse, Ratón-de abazones de California
  Chaetodipus eremicus (Mearns, 1898) -- valid -- Chihuahuan Desert Pocket Mouse, Chihuahuan Pocket Mouse, eastern desert pocket mouse
  Chaetodipus fallax (Merriam, 1889) -- valid -- Ratón-de abazones de San Diego, San Diego Pocket Mouse
  Chaetodipus formosus (Merriam, 1889) -- valid -- Long-tailed Pocket Mouse, Ratón-de abazones cola larga
  Chaetodipus hispidus (Baird, 1858) -- valid -- Hispid Pocket Mouse, Ratón-de abazones crespo
  Chaetodipus intermedius (Merriam, 1889) -- valid -- Ratón-de abazones de roca, Rock Pocket Mouse
  Chaetodipus nelsoni (Merriam, 1894) -- valid -- Nelson's Pocket Mouse, Ratón-de abazones de Nelson
  Chaetodipus penicillatus (Woodhouse, 1852) -- valid -- Desert Pocket Mouse, Ratón-de abazones desértico
  Chaetodipus spinatus (Merriam, 1889) -- valid -- Ratón-de abazones de Baja California, Spiny Pocket Mouse
  Chaetophractus Fitzinger, 1871 -- valid -- Hairy Armadillos
  Chaetophractus nationi (Thomas, 1894) -- valid -- Andean Hairy Armadillo
  Chaetophractus vellerosus (Gray, 1865) -- valid -- Screaming Hairy Armadillo
  Chaetophractus villosus (Desmarest, 1804) -- valid -- Big Hairy Armadillo, Large Hairy Armadillo
  Chironectes Illiger, 1811 -- valid -- water opossum, yapok
  Chironectes minimus (Zimmermann, 1780) -- valid -- Tlacuache acuático, Water Opossum, yapok
  Chiroptera Blumenbach, 1779 -- valid -- bats, morcego, quiróptero
  Chlamyphorinae Bonaparte, 1850 -- invalid -- pichiciegos
  Chlamyphorus Harlan, 1825 -- valid
  Chlamyphorus retusus Burmeister, 1863 -- invalid -- Chacoan Fairy Armadillo
  Chlamyphorus truncatus Harlan, 1825 -- valid -- Pink Fairy Armadillo
  Chlorocebus Gray, 1870 -- valid -- green monkeys, vervet monkeys
  Chlorocebus aethiops (Linnaeus, 1758) -- valid -- green monkey, Grivet, Grivet Monkey, vervet monkey
  Choeronycteris Tschudi, 1844 -- valid -- long-tongued bats
  Choeronycteris mexicana Tschudi, 1844 -- valid -- long-tongued bat, Mexican long-tongued bat, Mexican Long-tongued Bat, Murciélago trompudo
  Choloepus Illiger, 1811 -- valid -- two-toed sloths
  Choloepus didactylus (Linnaeus, 1758) -- valid -- Linnaeus's Two-toed Sloth, Southern Two-toed Sloth
  Choloepus hoffmanni Peters, 1858 -- valid -- Hoffmann's Two-toed Sloth
  Chrysocyon C. E. H. Smith, 1839 -- valid
  Chrysocyon brachyurus (Illiger, 1815) -- valid -- Maned Wolf
  Clethrionomys Tilesius, 1850 -- invalid -- red-backed voles
  Clethrionomys californicus (Merriam, 1890) -- invalid -- Western Red-backed Vole
  Clethrionomys gapperi (Vigors, 1830) -- invalid -- campagnol à dos roux de Gapper, Southern Red-backed Vole
  Clethrionomys rutilus (Pallas, 1779) -- invalid -- Northern Red-backed Vole
  Condylura Illiger, 1811 -- valid -- star-nosed moles
  Condylura cristata (Linnaeus, 1758) -- valid -- condylure étoilé, Star-nosed Mole
  Conepatus Gray, 1837 -- valid -- hog-nosed skunks
  Conepatus leuconotus (Lichtenstein, 1832) -- valid -- American Hog-nosed Skunk, badger skunk, eastern hog-nosed skunk, rooter skunk, Texas skunk, white-backed hog-nosed skunk, Zorrillo-narigón occidental
  Conepatus mesoleucus (Lichtenstein, 1832) -- invalid -- hog-nosed skunk, western hog-nosed skunk, Zorrillo-narigón norteño
  Corynorhinus H. Allen, 1865 -- valid -- big-eared bats
  Corynorhinus mexicanus G. M. Allen, 1916 -- valid -- Mexican Big-eared Bat, Murciélago-mula Mexicano
  Corynorhinus rafinesquii (Lesson, 1827) -- valid -- eastern big-eared bat, eastern long-eared bat, eastern lump-nosed bat, Rafinesque's big-eared bat, Rafinesque's Big-eared Bat, southeastern big-eared bat
  Corynorhinus townsendii (Cooper, 1837) -- valid -- mule-eared bat, Pacific Townsend's big-eared bat, Townsend's Big-eared Bat, Townsend's big-eared bat, western big-eared bat, western long-eared bat, western lump-nosed bat
  Corynorhinus townsendii australis Handley, 1955 -- valid
  Corynorhinus townsendii pallescens Miller, 1897 -- valid -- pale Townsend's big-eared bat
  Corynorhinus townsendii townsendii (Cooper, 1837) -- valid -- Pacific Townsend's big-eared bat, Townsend's big-eared bat
  Corynorhinus townsendii virginianus Handley, 1955 -- valid -- Virginia big-eared bat
  Cricetidae Fischer, 1817 -- valid
  Crocidurinae Milne-Edwards, 1872 -- valid -- white-toothed shrews
  Cryptotis Pomel, 1848 -- valid -- small-eared shrews
  Cryptotis parva (Say, 1823) -- valid -- bee shrew, Least Shrew, little short-tailed shrew, Musaraña-orejillas mínima, North American Least Shrew, small short-tailed shrew
  Cuon Hodgson, 1838 -- valid
  Cuon alpinus (Pallas, 1811) -- valid -- Asiatic Wild Dog, Dhole, Indian dhole, Red Dog
  Cyclopes Gray, 1821 -- valid -- pygmy anteaters
  Cyclopes didactylus (Linnaeus, 1758) -- valid -- Silky Anteater
  Cynomys Rafinesque, 1817 -- valid -- Prairie Dogs
  Cynomys gunnisoni (Baird, 1855) -- valid -- Gunnison's Prairie Dog
  Cynomys leucurus Merriam, 1890 -- valid -- White-tailed Prairie Dog
  Cynomys ludovicianus (Ord, 1815) -- valid -- Arizona black-tailed prairie dog, Black-tailed Prairie Dog, Perro-llanero cola negra
  Cynomys parvidens J. A. Allen, 1905 -- valid -- Utah Prairie Dog
  Cystophora Nilsson, 1820 -- valid -- hooded seals
  Cystophora cristata (Erxleben, 1777) -- valid -- bladdernose seal, Hooded Seal, phoque à capuchon
  Dama Frisch, 1775 -- valid -- fallow deer
  Dama dama (Linnaeus, 1758) -- valid -- fallow deer, Fallow Deer
  Dama virginiana Zimmermann, 1780 -- invalid
  Dama virginiana clavia (Barbour and G. M. Allen, 1922) -- invalid
  Dama virginiana leucura (Douglas, 1829) -- invalid
  Dama virginianus Zimmermann, 1780 -- invalid
  Dama virginianus leucurus (Douglas, 1829) -- invalid
  Dasypodidae Gray, 1821 -- valid -- Armadillos
  Dasypodinae Gray, 1821 -- valid -- armadillos
  Dasypus Linnaeus, 1758 -- valid -- Long-nosed Armadillos
  Dasypus hybridus (Desmarest, 1804) -- valid -- Southern Long-nosed Armadillo
  Dasypus kappleri Krauss, 1862 -- valid -- Greater Long-nosed Armadillo
  Dasypus novemcinctus Linnaeus, 1758 -- valid -- Armadillo nueve bandas, long-nosed armadillo, Nine-banded Armadillo
  Dasypus pilosus (Fitzinger, 1856) -- valid -- Hairy Long-nosed Armadillo
  Dasypus sabanicola Mondolfi, 1968 -- valid -- Llanos Long-nosed Armadillo
  Dasypus septemcinctus Linnaeus, 1758 -- valid -- Seven-banded Armadillo
  Delphinapterus Lacépède, 1804 -- valid -- belugas, white whales
  Delphinapterus leucas (Pallas, 1776) -- valid -- Beluga, béluga, white whale
  Delphinidae Gray, 1821 -- valid -- dolphins, killer whales, marine dolphins, pilot whales
  Delphinus Linnaeus, 1758 -- valid -- common dolphins
  Delphinus capensis Gray, 1828 -- valid -- Long-beaked Common Dolphin, long-beaked common dolphin, long-beaked saddle-backed dolphin, long-beaked saddleback dolphin
  Delphinus delphis Linnaeus, 1758 -- valid -- common dolphin, Delfín común, saddle-backed dolphin, Short-beaked Common Dolphin, short-beaked saddle-backed dolphin, Short-beaked Saddleback Dolphin
  Dermoptera Illiger, 1811 -- valid -- Flying Lemurs
  Desmodontinae Bonaparte, 1845 -- valid
  Dicrostonyx Gloger, 1841 -- valid -- Collared Lemmings
  Dicrostonyx exsul G. M. Allen, 1919 -- invalid -- St. Lawrence Island collared lemming
  Dicrostonyx groenlandicus (Traill, 1823) -- valid -- Collared Lemming, Greenland Collared Lemming, Nearctic Collared Lemming, Northern Collared Lemming
  Dicrostonyx hudsonius (Pallas, 1778) -- valid -- Labrador Collared Lemming, lemming d'Ungava, Ungava Collared Lemming
  Dicrostonyx kilangmiutak Anderson and Rand, 1945 -- invalid -- Kilangmiutak collared lemming, Victoria collared lemming
  Dicrostonyx nelsoni Merriam, 1900 -- valid -- Nelson's Collared Lemming
  Dicrostonyx nunatakensis Youngman, 1967 -- valid -- Ogilvie Mountain Collared Lemming, Ogilvie Mountains Collared Lemming
  Dicrostonyx richardsoni Merriam, 1900 -- valid -- Richardson's Collared Lemming
  Dicrostonyx rubricatus (Richardson, 1839) -- invalid -- Bering collared lemming, Tundra Collared Lemming
  Dicrostonyx torquatus (Pallas, 1778) -- valid -- Arctic Lemming, Collared Lemming, Palearctic Collared Lemming
  Dicrostonyx unalascensis Merriam, 1900 -- valid -- Aleutian Island Collared Lemming, Unalaska Collared Lemming
  Didelphidae Gray, 1821 -- valid -- American opossums, opossoms
  Didelphimorphia Gill, 1872 -- valid -- American marsupials, cuica, didelfimorfo, gambá, marsupial, marsupials, mucura
  Didelphinae Gray, 1821 -- valid
  Didelphis Linnaeus, 1758 -- valid -- large American opossums
  Didelphis albiventris Lund, 1840 -- valid -- White-eared Opossum
  Didelphis aurita (Wied-Neuwied, 1826) -- valid -- Big-eared Opossum
  Didelphis marsupialis Linnaeus, 1758 -- valid -- Common Opossum, Tlacuache sureño
  Didelphis virginiana Kerr, 1792 -- valid -- opossum d'Amérique, Tlacuache norteño, Virginia Opossum
  Diphylla Spix, 1823 -- valid -- hairy-legged vampire bats
  Diphylla ecaudata Spix, 1823 -- valid -- hairy-legged vampire bat, Hairy-legged Vampire Bat, Vampiro pata peluda
  Dipodidae Fischer de Waldheim, 1817 -- valid -- birch mice, Jerboas, jumping mice
  Dipodomyinae Gervais, 1853 -- valid
  Dipodomys Gray, 1841 -- valid -- Kangaroo Rats
  Dipodomys agilis Gambel, 1848 -- valid -- Agile Kangaroo Rat, Rata-canguro ágil
  Dipodomys californicus Merriam, 1890 -- valid -- California Kangaroo Rat
  Dipodomys cascus Huey, 1962 -- invalid
  Dipodomys compactus True, 1889 -- valid -- Gulf Coast Kangaroo Rat, Rata-canguro de Del Padre
  Dipodomys deserti Stephens, 1887 -- valid -- Desert Kangaroo Rat, Rata-canguro desértica
  Dipodomys elator Merriam, 1894 -- valid -- Texas Kangaroo Rat
  Dipodomys elephantinus (Grinnell, 1919) -- invalid -- Big-eared Kangaroo Rat
  Dipodomys heermanni LeConte, 1853 -- valid -- Heermann's Kangaroo Rat
  Dipodomys heermanni heermanni LeConte, 1853 -- valid -- Heermann's kangaroo rat
  Dipodomys heermanni morroensis (Merriam, 1907) -- valid -- Morro Bay kangaroo rat
  Dipodomys ingens (Merriam, 1904) -- valid -- Giant Kangaroo Rat
  Dipodomys merriami Mearns, 1890 -- valid -- Merriam's Kangaroo Rat, Rata-canguro de Merriam
  Dipodomys merriami brevinasus Grinnell, 1920 -- invalid
  Dipodomys merriami exilis Merriam, 1894 -- invalid
  Dipodomys merriami nitratoides Merriam, 1894 -- invalid
  Dipodomys microps (Merriam, 1904) -- valid -- Chisel-toothed Kangaroo Rat
  Dipodomys nitratoides Merriam, 1894 -- valid -- Fresno Kangaroo Rat, San Joaquin kangaroo rat, San Joaquin Valley Kangaroo Rat
  Dipodomys nitratoides brevinasus Grinnell, 1920 -- valid -- Short-nosed kangaroo rat
  Dipodomys nitratoides exilis Merriam, 1894 -- valid -- Fresno kangaroo rat
  Dipodomys nitratoides nitratoides Merriam, 1894 -- valid -- Tipton kangaroo rat
  Dipodomys ordii Woodhouse, 1853 -- valid -- Ord's Kangaroo Rat, Rata-canguro común
  Dipodomys panamintinus (Merriam, 1894) -- valid -- Panamint Kangaroo Rat
  Dipodomys simulans (Merriam, 1904) -- valid -- Dulzura Kangaroo Rat
  Dipodomys spectabilis Merriam, 1890 -- valid -- Banner-tailed Kangaroo Rat, Rata-canguro cola de bandera
  Dipodomys stephensi (Merriam, 1907) -- valid -- Stephens' kangaroo rat, Stephens's Kangaroo Rat
  Dipodomys venustus (Merriam, 1904) -- valid -- Narrow-faced Kangaroo Rat
  Distoechurus pennatus Peters, 1874 -- valid -- Feather-tailed Possum
  Dromiciops Thomas, 1894 -- valid -- monito del monte
  Dromiciops gliroides Thomas, 1894 -- valid -- Monito del Monte, monito del monte
  Dugong Lacépède, 1799 -- valid -- dugongs
  Dugong dugon (Müller, 1776) -- valid -- Dugong
  Dugongidae Gray, 1821 -- valid -- dugongs, sea cows
  Dusicyon C. E. H. Smith, 1839 -- valid
  Dusicyon microtis (Sclater, 1883) -- invalid -- small-eared dog
  Edentata Vicq-d'Azyr, 1792 -- invalid -- anteaters, armadillos, edentates, sloths
  Emballonura Temminck, 1838 -- valid -- sheath-tailed bats
  Emballonura semicaudata (Peale, 1848) -- valid -- Mariana sheath-tailed bat, Polynesian Sheath-tailed Bat, Polynesian sheath-tailed bat, sheath-tailed bat
  Emballonura sulcata Miller, 1911 -- invalid -- Caroline sheath-tailed bat
  Emballonuridae Gervais, 1855 -- valid -- sac-winged bats, sheath-tailed bats
  Enhydra Fleming, 1822 -- valid -- sea otters
  Enhydra lutris (Linnaeus, 1758) -- valid -- Nutria marina, Sea Otter
  Enhydra lutris kamtschatica Dybowski, 1922 -- invalid
  Enhydra lutris lutris (Linnaeus, 1758) -- valid -- sea otter
  Enhydra lutris nereis (Merriam, 1904) -- valid -- southern sea otter
  Eptesicus Rafinesque, 1820 -- valid -- big brown bats
  Eptesicus fuscus (Palisot de Beauvois, 1796) -- valid -- big brown bat, Big Brown Bat, grande chauve-souris brune, Murciélago-moreno norteamericano
  Equidae Gray, 1821 -- valid -- Asses, Horses, Zebras
  Equus Linnaeus, 1758 -- valid -- Horses
  Equus asinus Linnaeus, 1758 -- valid -- Ass, burro, Donkey, feral burro, Wild Ass
  Equus caballus Linnaeus, 1758 -- valid -- feral horse, Horse
  Equus grevyi Oustalet, 1882 -- valid -- Grevy's Zebra, Grévy's Zebra
  Equus zebra Linnaeus, 1758 -- valid -- Cape mountain zebra, Mountain Zebra, Zebra
  Equus zebra hartmannae Matschie, 1898 -- invalid -- Hartmann Zebra, Hartmann's Mountain Zebra, Hartmann's Zebra
  Equus zebra zebra Linnaeus, 1758 -- invalid -- Cape Mountain Zebra, mountain zebra
  Eremiomys Poliakov, 1881 -- invalid
  Erethizon F. Cuvier, 1823 -- valid -- New World porcupines
  Erethizon dorsatum (Linnaeus, 1758) -- invalid -- common porcupine, porc-épic d'Amérique, porcupine, Puercoespín norteamericano
  Erethizontidae Bonaparte, 1845 -- valid -- New World porcupines
  Erignathus Gill, 1866 -- valid -- bearded seals
  Erignathus barbatus (Erxleben, 1777) -- valid -- Bearded Seal, phoque barbu, squareflipper, ugruk
  Erinaceidae G. Fischer, 1814 -- valid -- gymnures, hedgehogs
  Erophylla Miller, 1906 -- valid -- brown flower bats
  Erophylla bombifrons (Miller, 1899) -- valid -- brown flower bat, Brown Flower Bat
  Erophylla sezekorni (Gundlach, 1861) -- valid -- buffy flower bat, Buffy Flower Bat
  Eschrichtiidae Ellerman and Morrison-Scott, 1951 -- valid -- gray whales, grey whales
  Eschrichtius Gray, 1864 -- valid -- gray whales, grey whales
  Eschrichtius robustus (Lilljeborg, 1861) -- valid -- Ballena gris, Gray Whale, grey whale
  Eubalaena Gray, 1864 -- valid -- right whales
  Eubalaena australis (Desmoulins, 1822) -- valid -- Southern Right Whale
  Eubalaena glacialis (Müller, 1776) -- valid -- baleine noire, Ballena franca, black right whale, North Atlantic Right Whale, Northern Right Whale
  Euderma H. Allen, 1892 -- valid -- spotted bats
  Euderma maculatum (J. A. Allen, 1891) -- valid -- Murciélago pinto, Spotted Bat, spotted bat
  Eumetopias Gill, 1866 -- valid -- northern sea lions
  Eumetopias jubatus (Schreber, 1776) -- valid -- northern sea lion, Steller Sea Lion, steller sealion, Steller's sea lion
  Eumops Miller, 1906 -- valid -- mastiff-bats
  Eumops glaucinus (Wagner, 1843) -- valid -- Murciélago-con bonete de Wagner, Wagner's Bonneted Bat, Wagner's mastiff-bat
  Eumops perotis (Schinz, 1821) -- valid -- Greater Bonneted Bat, Murciélago-con bonete mayor, Western Bonneted Bat, western mastiff-bat
  Eumops underwoodi Goodwin, 1940 -- valid -- Murciélago-con bonete de Underwood, Underwood's Bonneted Bat, Underwood's mastiff-bat
  Euphractus Wagler, 1830 -- valid -- six-banded armadillos
  Euphractus sexcinctus (Linnaeus, 1758) -- valid -- Six-banded Armadillo
  Eutamias Trouessart, 1880 -- invalid
  Eutamias minimus (Bachman, 1839) -- invalid
  Eutheria Gill, 1872 -- valid
  Felidae Fischer de Waldheim, 1817 -- valid -- cats
  Feliformia Kretzoi, 1945 -- valid -- cat-like carnivores
  Felinae Fischer de Waldheim, 1817 -- valid
  Felis Linnaeus, 1758 -- valid -- small cats
  Felis albescens Pucheran, 1855 -- invalid
  Felis apache Mearns, 1901 -- invalid
  Felis aztecus browni Merriam, 1903 -- invalid
  Felis bangsi costaricensis Merriam, 1901 -- invalid
  Felis bengalensis Kerr, 1792 -- invalid -- leopard cat
  Felis bieti Milne-Edwards, 1892 -- valid -- Chinese desert cat, Chinese Mountain Cat
  Felis cacomitli Berlandier, 1859 -- invalid
  Felis californica May, 1896 -- invalid
  Felis canescens Swainson, 1838 -- invalid
  Felis catus Linnaeus, 1758 -- valid -- Domestic Cat
  Felis chaus Schreber, 1777 -- valid -- Jungle Cat
  Felis concolor Linnaeus, 1771 -- invalid -- mountain lion
  Felis concolor azteca Merriam, 1901 -- invalid
  Felis concolor browni Merriam, 1903 -- invalid
  Felis concolor californica May, 1896 -- invalid
  Felis concolor concolor Linnaeus, 1771 -- invalid -- mountain lion
  Felis concolor coryi Bangs, 1899 -- invalid -- Florida panther
  Felis concolor costaricensis Merriam, 1901 -- invalid
  Felis concolor couguar Kerr, 1792 -- invalid -- couguar, eastern cougar
  Felis concolor hippolestes Merriam, 1897 -- invalid
  Felis concolor improcera Phillips, 1912 -- invalid
  Felis concolor kaibabensis Nelson and Goldman, 1931 -- invalid -- Kaibab Mountain Lion
  Felis concolor mayensis Nelson and Goldman, 1929 -- invalid
  Felis concolor missoulensis Goldman, 1943 -- invalid
  Felis concolor oregonensis Rafinesque, 1832 -- invalid
  Felis concolor schorgeri Jackson, 1955 -- invalid
  Felis concolor stanleyana Goldman, 1938 -- invalid
  Felis concolor vancouverensis Nelson and Goldman, 1932 -- invalid
  Felis couguar Kerr, 1792 -- invalid
  Felis fossata Mearns, 1901 -- invalid
  Felis geoffroyi d'Orbigny and Gervais, 1844 -- invalid -- Geoffroy's cat
  Felis glaucula Thomas, 1903 -- invalid
  Felis glaucula oaxacensis Nelson and Goldman, 1931 -- invalid -- Oaxaca Long-tailed Tiger Cat
  Felis glaucula yucatanica Nelson and Goldman, 1931 -- invalid -- Yucatan Long-tailed Tiger Cat
  Felis griffithii J. B. Fischer, 1829 -- invalid
  Felis hippolestes Merriam, 1897 -- invalid
  Felis hippolestes aztecus Merriam, 1901 -- invalid
  Felis hippolestes olympus Merriam, 1897 -- invalid
  Felis improcera Phillips, 1912 -- invalid
  Felis limitis Mearns, 1902 -- invalid
  Felis lybica Forster, 1780 -- invalid -- African wild cat
  Felis manul Pallas, 1776 -- valid -- Pallas' cat, Pallas's Cat, steppe cat
  Felis margarita Loche, 1858 -- valid -- Sand Cat
  Felis mearnsi J. A. Allen, 1904 -- invalid
  Felis mexicana Kerr, 1792 -- invalid
  Felis minuta Temminck, 1824 -- invalid -- Philippine cat
  Felis nigripes Burchell, 1824 -- valid -- Black-footed Cat
  Felis ocelot Link, 1795 -- invalid
  Felis onca Linnaeus, 1758 -- invalid
  Felis oregonensis Rafinesque, 1832 -- invalid
  Felis pajeros Desmarest, 1816 -- invalid -- Pampas cat
  Felis panamensis J. A. Allen, 1904 -- invalid
  Felis pardalis Linnaeus, 1758 -- invalid -- ocelot
  Felis pardalis albescens Pucheran, 1855 -- invalid
  Felis pardalis mearnsi J. A. Allen, 1904 -- invalid
  Felis pardalis minimus Wilson, 1860 -- invalid
  Felis pardalis nelsoni Goldman, 1925 -- invalid
  Felis pardalis sonoriensis Goldman, 1925 -- invalid
  Felis pirrensis Goldman, 1914 -- invalid
  Felis pseudopardalis Boitard, 1842 -- invalid
  Felis rubiginosa I. Geoffroy Saint-Hilaire, 1831 -- invalid -- rusty-spotted cat
  Felis rufus Schreber, 1777 -- invalid
  Felis rufus rufus Schreber, 1777 -- invalid
  Felis serval Schreber, 1776 -- invalid -- serval
  Felis silvestris Schreber, 1777 -- valid -- wild cat, Wildcat
  Felis viverrina Bennett, 1833 -- invalid -- fishing cat
  Felis wiedii Schinz, 1821 -- invalid -- margay
  Felis wiedii cooperi Goldman, 1943 -- invalid
  Felis wiedii glaucula Thomas, 1903 -- invalid
  Felis wiedii nicaraguae (J. A. Allen, 1919) -- invalid
  Felis wiedii oaxacensis Nelson and Goldman, 1931 -- invalid
  Felis wiedii pirrensis Goldman, 1914 -- invalid
  Felis wiedii salvinia (Pocock, 1941) -- invalid
  Felis wiedii wiedii Schinz, 1821 -- invalid -- margay
  Felis wiedii yucatanica Nelson and Goldman, 1931 -- invalid
  Felis yagouaroundi cacomitli Berlandier, 1859 -- invalid -- jaguarundi
  Felis yagouaroundi fossata Mearns, 1901 -- invalid
  Felis yagouaroundi panamensis J. A. Allen, 1904 -- invalid
  Felis yagouaroundi tolteca Thomas, 1898 -- invalid
  Felis yagouaroundi yagouaroundi É. Geoffroy Saint-Hilaire, 1803 -- invalid
  Felis yaguarondi Lacépède, 1809 -- invalid -- jaguarundi
  Feresa Gray, 1870 -- valid -- pygmy killer whales
  Feresa attenuata Gray, 1874 -- valid -- Orca pigmea, Pygmy Killer Whale
  Fiber zibethicus maculosa Richardson, 1829 -- invalid
  Fiber zibethicus niger Fitzinger, 1867 -- invalid
  Fiber zibethicus nigra Richardson, 1829 -- invalid
  Fiber zibethicus varius Fitzinger, 1867 -- invalid
  Geomyidae Bonaparte, 1845 -- valid -- Pocket Gophers
  Geomys Rafinesque, 1817 -- valid -- Eastern Pocket Gophers
  Geomys arenarius Merriam, 1895 -- valid -- Desert Pocket Gopher, Tuza arenera
  Geomys attwateri Merriam, 1895 -- valid -- Attwater's Pocket Gopher
  Geomys breviceps Baird, 1855 -- valid -- Baird's Pocket Gopher, Mer Rouge pocket gopher
  Geomys bursarius (Shaw, 1800) -- valid -- Plains Pocket Gopher
  Geomys knoxjonesi Baker and Genoways, 1975 -- valid -- Jones' pocket gopher, Jones's Pocket Gopher, Knox Jones's Pocket Gopher
  Geomys personatus True, 1889 -- valid -- Texas Pocket Gopher, Tuza texana
  Geomys pinetis Rafinesque, 1817 -- valid -- Southeastern Pocket Gopher
  Geomys texensis Merriam, 1895 -- valid -- Central Texas Pocket Gopher, Llano Pocket Gopher
  Glaucomys Thomas, 1908 -- valid -- American flying squirrels, New World Flying Squirrels
  Glaucomys sabrinus (Shaw, 1801) -- valid -- grand polatouche, Northern Flying Squirrel
  Glaucomys sabrinus coloratus Handley, 1953 -- valid -- Carolina northern flying squirrel
  Glaucomys sabrinus fuscus Miller, 1936 -- valid -- Virginia flying squirrel, Virginia northern flying squirrel
  Glaucomys sabrinus sabrinus (Shaw, 1801) -- valid -- Hudson Bay flying squirrel, northern flying squirrel
  Glaucomys volans (Linnaeus, 1758) -- valid -- Ardilla-voladora del sur, petit polatouche, Southern Flying Squirrel
  Glironia Thomas, 1912 -- valid
  Glironia venusta Thomas, 1912 -- valid -- Bushy-tailed Opossum
  Globicephala Lesson, 1828 -- valid -- pilot whales
  Globicephala macrorhynchus Gray, 1846 -- valid -- Short-finned Pilot Whale
  Globicephala melaena (Traill, 1809) -- invalid -- long-finned pilot whale
  Globicephala melas (Traill, 1809) -- valid -- globicéphale noir de l'Atlantique, Long-finned Pilot Whale
  Globicephala sieboldii Gray, 1846 -- invalid
  Glossophaginae Bonaparte, 1845 -- valid
  Gracilinanus Gardner and Creighton, 1989 -- valid
  Gracilinanus aceramarcae (Tate, 1931) -- valid -- Aceramarca Gracile Opossum
  Gracilinanus agilis (Burmeister, 1854) -- valid -- Agile Gracile Opossum
  Gracilinanus dryas (Thomas, 1898) -- valid -- Wood Sprite Gracile Opossum
  Gracilinanus emiliae (Thomas, 1909) -- valid -- Emilia's Gracile Opossum
  Gracilinanus marica (Thomas, 1898) -- valid -- Northern Gracile Opossum
  Gracilinanus microtarsus (Wagner, 1842) -- valid -- Brazilian Gracile Opossum
  Grampus Gray, 1828 -- valid -- grampus
  Grampus griseus (G. Cuvier, 1812) -- valid -- Delfín chato, grampus, Risso's Dolphin
  Gulo Pallas, 1780 -- valid -- wolverines
  Gulo gulo (Linnaeus, 1758) -- valid -- carcajou, Wolverine
  Halichoerus Nilsson, 1820 -- valid -- gray seals
  Halichoerus grypus (Fabricius, 1791) -- valid -- Atlantic gray seal, Atlantic seal, Baltic gray seal, Gray Seal, horsehead, phoque gris
  Haplodon leporinus californicus Peters, 1864 -- invalid
  Herpailurus Severtzov, 1858 -- invalid -- jaguarundis
  Herpailurus yaguarondi (Lacépède, 1809) -- invalid -- Jaguarundi, jaguarundi
  Herpailurus yaguarondi cacomitli (Berlandier, 1859) -- invalid -- Gulf Coast jaguarundi, jaguarundi
  Herpailurus yaguarondi fossata (Mearns, 1901) -- invalid -- Guatemalan jaguarundi
  Herpailurus yaguarondi panamensis (J. A. Allen, 1904) -- invalid -- Panamanian jaguarundi
  Herpailurus yaguarondi tolteca (Thomas, 1898) -- invalid -- Sinaloan jaguarundi
  Herpailurus yaguarondi yaguarondi (Lacépède, 1809) -- invalid
  Herpestes Illiger, 1811 -- valid -- mongooses
  Herpestes auropunctatus (Hodgson, 1836) -- invalid -- Indian mongoose
  Herpestes javanicus (É. Geoffroy Saint-Hilaire, 1818) -- valid -- Indian mongoose, Javan mongoose, Small Asian Mongoose
  Herpestidae Bonaparte, 1845 -- valid -- civets, mongooses
  Herpestinae Bonaparte, 1845 -- invalid
  Hesperomys niveiventris Chapman, 1889 -- invalid
  Heteromyidae Gray, 1868 -- valid -- heteromyid rodents, Kangaroo Mice, Kangaroo Rats, Pocket Mice
  Heteromyinae Gray, 1868 -- valid
  Hominidae Gray, 1825 -- valid -- Great Apes, man-like primates
  Homo Linnaeus, 1758 -- valid -- hominoids
  Homo sapiens Linnaeus, 1758 -- valid -- Human, Humans, man
  Hydrodamalis Retzius, 1794 -- valid -- sea cows
  Hydrodamalis gigas (Zimmermann, 1780) -- valid -- great northern sea cow, Steller's Sea Cow
  Hydrurga Gistel, 1848 -- valid
  Hydrurga leptonyx (de Blainville, 1820) -- valid -- Leopard seal
  Hylomyinae Anderson, 1879 -- invalid
  Hylomys Müller, 1840 -- valid -- lesser gymnure, lesser moonrat
  Hylomys hainanensis (Shaw and Wong, 1959) -- invalid -- Hainan gymnure, Hainan moonrat
  Hylomys sinensis (Trouessart, 1909) -- invalid -- Chinese gymnure, shrew gymnure, shrew-hedgehog
  Hylomys suillus Müller, 1840 -- valid -- Short-tailed Gymnure
  Hyperoodon Lacépède, 1804 -- valid -- bottle-nosed whales, bottlenose whales
  Hyperoodon ampullatus (Forster, 1770) -- valid -- baleine à bec commune, North Atlantic bottle-nosed whale, northern bottle-nosed whale, Northern Bottlenose Whale
  Hyperoodon planifrons Flower, 1882 -- valid -- Ballena-picuda frente plana, southern bottle-nosed whale, Southern Bottlenose Whale
  Hypudaeus ochrogaster Wagner, 1842 -- invalid
  Hyracoidea Huxley, 1869 -- valid -- cories, dassies, Hyraxes
  Hystricognathi Brandt, 1855 -- valid -- hystricognath rodents
  Idionycteris Anthony, 1923 -- valid -- Allen's big-eared bats
  Idionycteris phyllotis (G. M. Allen, 1916) -- valid -- Allen's big-eared bat, Allen's Big-eared Bat, Murciélago-mula de Allen
  Indopacetus Moore, 1968 -- valid
  Indopacetus pacificus (Longman, 1926) -- valid -- Longman's Beaked Whale, Tropical Bottlenose Whale
  Inia d'Orbigny, 1834 -- valid
  Inia geoffrensis (Blainville, 1817) -- valid -- Amazon River Dolphin, boto, boutu, Pink River Dolphin
  Insectivora -- invalid -- insectivores
  Isolobodon J. A. Allen, 1916 -- valid -- Puerto Rican hutias
  Isolobodon portoricensis J. A. Allen, 1916 -- valid -- Puerto Rican Hutia, Puerto Rico hutia
  Isolobodontinae Woods, 1989 -- valid
  Kobus A. Smith, 1840 -- valid -- kobs
  Kobus ellipsiprymnus (Ogilby, 1833) -- valid -- waterbuck, Waterbuck
  Kobus kob (Erxleben, 1777) -- valid -- kob, Kob
  Kobus leche Gray, 1850 -- valid -- lechwe, Lechwe, red lechwe
  Kogia Gray, 1846 -- valid -- pygmy sperm whales, small sperm whales
  Kogia breviceps (Blainville, 1838) -- valid -- Cachalote pigmeo, Pygmy Sperm Whale
  Kogia sima (Owen, 1866) -- valid -- Dwarf Sperm Whale
  Kogia simus (Owen, 1866) -- invalid -- dwarf sperm whale
  Lagenodelphis Fraser, 1956 -- valid -- Borneau dolphins
  Lagenodelphis hosei Fraser, 1956 -- valid -- Delfín de Fraser, Fraser's Dolphin
  Lagenorhynchus Gray, 1846 -- valid -- white-beaked dolphins, white-sided dolphins
  Lagenorhynchus acutus (Gray, 1828) -- valid -- Atlantic White-sided Dolphin, dauphin à flancs blancs
  Lagenorhynchus albirostris (Gray, 1846) -- valid -- dauphin à nez blanc, White-beaked Dolphin
  Lagenorhynchus australis (Peale, 1848) -- valid -- Peale's Dolphin
  Lagenorhynchus cruciger (Quoy and Gaimard, 1824) -- valid -- Hourglass Dolphin
  Lagenorhynchus obliquidens Gill, 1865 -- valid -- Delfín costado blanco, Pacific White-sided Dolphin
  Lagenorhynchus obscurus (Gray, 1828) -- valid -- Dusky Dolphin
  Lagomorpha Brandt, 1855 -- valid -- coelho, Hares, lagomorphs, Pikas, Rabbits, tapeti
  Lagurus Gloger, 1841 -- valid -- Sagebrush Voles
  Lagurus Gloger, 1841 -- invalid
  Lagurus curtatus (Cope, 1868) -- invalid -- Sagebrush Vole
  Lasionycteris Peters, 1866 -- valid -- silver-haired bats
  Lasionycteris noctivagans (Le Conte, 1831) -- valid -- chauve-souris argentée, Murciélago pelo plateado, silver-haired bat, Silver-haired Bat
  Lasiurus Gray, 1831 -- valid -- hairy-tailed bats
  Lasiurus blossevillii (Lesson and Garnot, 1826) -- valid -- Murciélago-cola peluda de Blossevilli, Red Bat, Western Red Bat, western red bat
  Lasiurus borealis (Müller, 1776) -- valid -- chauve-souris rousse, eastern red bat, Eastern Red Bat, Murciélago-cola peluda rojizo, red bat
  Lasiurus cinereus (Palisot de Beauvois, 1796) -- valid -- chauve-souris cendrée, Hoary Bat, hoary bat, Murciélago-cola peluda canoso
  Lasiurus cinereus cinereus (Palisot de Beauvois, 1796) -- valid
  Lasiurus cinereus semotus (H. Allen, 1890) -- valid -- Hawaiian hoary bat, Hawaiian Hoary bat
  Lasiurus ega (Gervais, 1856) -- valid -- Murciélago-cola peluda amarillo, Southern Yellow Bat, southern yellow bat
  Lasiurus intermedius H. Allen, 1862 -- valid -- Murciélago-cola peluda norteño, Northern Yellow Bat, northern yellow bat
  Lasiurus minor Miller, 1931 -- valid -- little red bat, Minor Red Bat
  Lasiurus seminolus (Rhoads, 1895) -- valid -- Seminole bat, Seminole Bat
  Lasiurus xanthinus (Thomas, 1897) -- valid -- Murciélago-cola peluda de La Laguna, western yellow bat, Western Yellow Bat
  Latax lutris nereis Merriam, 1904 -- invalid
  Lemmiscus Thomas, 1912 -- valid -- sagebrush voles
  Lemmiscus curtatus (Cope, 1868) -- valid -- Sagebrush Vole
  Lemmus Rochebrune, 1843 -- invalid -- brown lemmings
  Lemmus nigripes (True, 1894) -- invalid
  Lemmus sibiricus (Kerr, 1792) -- valid -- Black-footed Lemming, Brown Lemming, Siberian Brown Lemming, Siberian Lemming
  Lemmus trimucronatus (Richardson, 1825) -- valid -- Nearctic Brown Lemming
  Leopardus Gray, 1842 -- valid -- American spotted cats
  Leopardus griseus Gray, 1842 -- invalid
  Leopardus pardalis (Linnaeus, 1758) -- valid -- Ocelot, Ocelote
  Leopardus pardalis albescens (Pucheran, 1855) -- valid
  Leopardus pardalis mearnsi (J. A. Allen, 1904) -- invalid
  Leopardus pardalis nelsoni (Goldman, 1925) -- valid
  Leopardus pardalis sonoriensis (Goldman, 1925) -- valid
  Leopardus wiedii (Schinz, 1821) -- valid -- Margay, Margay
  Leopardus wiedii cooperi (Goldman, 1943) -- valid
  Leopardus wiedii glaucula (Thomas, 1903) -- invalid
  Leopardus wiedii nicaraguae (J. A. Allen, 1919) -- valid
  Leopardus wiedii oaxacensis (Nelson and Goldman, 1931) -- valid -- Oaxaca Long-tailed Tiger Cat
  Leopardus wiedii pirrensis (Goldman, 1914) -- valid
  Leopardus wiedii salvinia Pocock, 1941 -- invalid
  Leopardus wiedii wiedii (Schinz, 1821) -- valid -- margay
  Leopardus wiedii yucatanica (Nelson and Goldman, 1931) -- invalid
  Leporidae Fischer, 1817 -- valid -- Hares, Rabbits
  Leptailurus Severtzov, 1858 -- valid
  Leptailurus serval (Schreber, 1776) -- valid -- Serval
  Leptonychotes Gill, 1872 -- valid
  Leptonychotes weddellii (Lesson, 1826) -- valid -- Weddell Seal
  Leptonycteris Lydekker, 1891 -- valid -- Mexican long-nosed bats
  Leptonycteris curasoae Miller, 1900 -- valid -- Curaçaoan Long-nosed Bat, Murciélago-hocicudo de Curazao, southern long-nosed bat
  Leptonycteris curasoae yerbabuenae Martínez and Villa-R., 1940 -- invalid -- lesser long-nosed bat
  Leptonycteris nivalis (Saussure, 1860) -- valid -- big long-nosed bat, Mexican Long-nosed Bat, Mexican long-nosed bat, Murciélago-hocicudo mayor
  Leptonycteris nivalis yerbabuenae Martínez and Villa-R., 1940 -- invalid
  Leptonycteris sanborni Hoffmeister, 1957 -- invalid -- Sanborn's long-nosed bat
  Leptonycteris yerbabuenae Martínez and Villa-R., 1940 -- valid -- lesser long-nosed bat, Lesser Long-nosed Bat, Mexican long-nosed bat
  Lepus Linnaeus, 1758 -- valid -- Hares, Jack Rabbits, Jackrabbits
  Lepus alleni Mearns, 1890 -- valid -- antelope jack rabbit, Antelope Jackrabbit, Liebre antilope
  Lepus americanus Erxleben, 1777 -- valid -- lièvre d'Amérique, Snowshoe Hare
  Lepus arcticus Ross, 1819 -- valid -- Arctic Hare, lièvre arctique
  Lepus californicus Gray, 1837 -- valid -- black-tailed jack rabbit, Black-tailed Jackrabbit, Liebre cola negra
  Lepus callotis Wagler, 1830 -- valid -- Beautiful-eared jack rabbit, Gaillard jack rabbit, Liebre torda, snow sides, white-sided jack rabbit, White-sided Jackrabbit
  Lepus capensis Linnaeus, 1758 -- valid -- Cape Hare
  Lepus europaeus Pallas, 1778 -- valid -- brown hare, European Hare
  Lepus gaillardi Mearns, 1896 -- invalid
  Lepus idahoensis Merriam, 1891 -- invalid
  Lepus othus Merriam, 1900 -- valid -- Alaskan Hare, Beringian hare
  Lepus paludicola Miller and Bangs, 1894 -- invalid
  Lepus palustris Bachman, 1837 -- invalid
  Lepus timidus Linnaeus, 1758 -- valid -- Mountain Hare
  Lepus townsendii Bachman, 1839 -- valid -- white-tailed jack rabbit, White-tailed Jackrabbit
  Lestodelphys Tate, 1934 -- valid -- Patagonian opposum
  Lestodelphys halli (Thomas, 1921) -- valid -- Patagonian Opossum
  Lestoros Oehser, 1934 -- valid
  Lestoros inca (Thomas, 1917) -- valid -- Incan Caenolestid
  Liomys Merriam, 1902 -- valid -- Spiny Pocket Mice
  Liomys irroratus (Gray, 1868) -- valid -- Mexican Spiny Pocket Mouse, Ratón-espinoso mexicano
  Lipotes Miller, 1918 -- valid
  Lipotes vexillifer Miller, 1918 -- valid -- baiji, Baiji, Chinese river dolphin, White-flag Dolphin, Yangtze River Dolphin
  Lissodelphis Gloger, 1841 -- valid -- right whale dolphins, right-whale dolphins
  Lissodelphis borealis (Peale, 1848) -- valid -- Delfín-ballena norteño, Northern Right Whale Dolphin
  Lissodelphis peronii (Lacépède, 1804) -- valid -- Southern Right Whale Dolphin
  Lobodon Gray, 1844 -- valid
  Lobodon carcinophagus (Hombron and Jacquinot, 1842) -- invalid -- crabeater seal
  Lontra Gray, 1843 -- valid -- river otters
  Lontra canadensis (Schreber, 1777) -- valid -- common otter, loutre de Canada, loutre de rivière, North American River Otter, northern river otter, nutria del Canada, nutria norteamericana, Nutria-de río norteamericana, river otter
  Lutra Brünnich, 1771 -- invalid -- river otters
  Lutra canadensis (Schreber, 1777) -- invalid -- river otter
  Lutra gracilis Bechstein, 1800 -- invalid
  Lutra marina Erxleben, 1777 -- invalid
  Lutra stelleri Lesson, 1827 -- invalid
  Lutreolina Thomas, 1910 -- valid -- thick-tailed opossum
  Lutreolina crassicaudata (Desmarest, 1804) -- valid -- Lutrine Opossum
  Lutrinae Bonaparte, 1838 -- valid -- otters
  Lycaon Brookes, 1827 -- valid
  Lycaon pictus (Temminck, 1820) -- valid -- African hunting dog, African Wild Dog, Painted Hunting Dog
  Lynx Kerr, 1792 -- valid -- bobcats, lynxes
  Lynx canadensis Kerr, 1792 -- valid -- Canada lynx, Canadian Lynx, lynx, lynx du Canada
  Lynx caracal (Schreber, 1776) -- invalid
  Lynx lynx (Linnaeus, 1758) -- valid -- Eurasian Lynx
  Lynx rufus (Schreber, 1777) -- valid -- Bobcat, Lince americano, lynx roux
  Lynx rufus escuinapae J. A. Allen, 1903 -- valid -- Mexican bobcat
  Lynx rufus rufus (Schreber, 1777) -- valid -- bobcat
  Macaca Lacépède, 1799 -- valid -- macaques
  Macaca fascicularis (Raffles, 1821) -- valid -- Crab-eating Macaque, Long-tailed Macaque
  Macaca fuscata (Blyth, 1875) -- valid -- Japanese Macaque
  Macaca mulatta (Zimmermann, 1780) -- valid -- Rhesus Macaque, Rhesus Monkey
  Macroglossinae Gray, 1866 -- valid
  Macrotus Gray, 1843 -- valid -- leaf-nosed bats
  Macrotus californicus Baird, 1858 -- valid -- California leaf-nosed bat, Californian Leaf-nosed Bat, Murciélago-orejón californiano
  Macrotus waterhousii Gray, 1843 -- valid -- Murciélago-orejón mexicano, Waterhouse's leaf-nosed bat, Waterhouse's Leaf-nosed Bat
  Mammalia Linnaeus, 1758 -- valid -- mamífero, mammals, mammifères
  Margay glaucula nicaraguae J. A. Allen, 1919 -- invalid
  Marmosa Gray, 1821 -- valid -- mouse opossums
  Marmosa andersoni Pine, 1972 -- valid -- Heavy-browed Mouse Opossum
  Marmosa canescens (J. A. Allen, 1893) -- invalid -- Tlacuache-ratón gris
  Marmosa lepida (Thomas, 1888) -- valid -- Rufous Mouse Opossum
  Marmosa mexicana Merriam, 1897 -- valid -- Mexican Mouse Opossum, Tlacuache-ratón mexicano
  Marmosa murina (Linnaeus, 1758) -- valid -- Linnaeus's Mouse Opossum
  Marmosa robinsoni Bangs, 1898 -- valid -- Robinson's Mouse Opossum
  Marmosa rubra Tate, 1931 -- valid -- Red Mouse Opossum
  Marmosa tyleriana Tate, 1931 -- valid -- Tyleria Mouse Opossum
  Marmosa xerophila Handley and Gordon, 1979 -- valid -- Guajira Mouse Opossum
  Marmosops Matschie, 1916 -- valid
  Marmosops cracens (Handley and Gordon, 1979) -- valid -- Narrow-headed Slender Opossum
  Marmosops dorothea (Thomas, 1911) -- valid -- Dorothys' Slender Opossum
  Marmosops fuscatus (Thomas, 1896) -- valid -- Dusky Slender Opossum
  Marmosops handleyi (Pine, 1981) -- valid -- Handley's Slender Opossum
  Marmosops impavidus (Tschudi, 1845) -- valid -- Tschudi's Slender Opossum
  Marmosops incanus (Lund, 1840) -- valid -- Gray Slender Opossum
  Marmosops invictus (Goldman, 1912) -- valid -- Panama Slender Opossum
  Marmosops noctivagus (Tschudi, 1844) -- valid -- White-bellied Slender Opossum
  Marmosops parvidens (Tate, 1931) -- valid -- Delicate Slender Opossum
  Marmota Blumenbach, 1779 -- valid -- Marmots
  Marmota broweri Hall and Gilmore, 1934 -- valid -- Alaska Marmot
  Marmota caligata (Eschscholtz, 1829) -- valid -- Hoary Marmot
  Marmota flaviventris (Audubon and Bachman, 1841) -- valid -- Yellow-bellied Marmot
  Marmota monax (Linnaeus, 1758) -- valid -- Groundhog, marmotte commune, Woodchuck
  Marmota olympus (Merriam, 1898) -- valid -- Olympic Marmot
  Marmota vancouverensis Swarth, 1911 -- valid -- Vancouver Island Marmot, Vancouver Marmot
  Marsupialia Illiger, 1811 -- invalid -- marsupials, marsupiaux
  Martes Pinel, 1792 -- valid -- fishers, martens
  Martes americana (Turton, 1806) -- valid -- American Marten, marten, martre d'Amérique
  Martes pennanti (Erxleben, 1777) -- valid -- Fisher, pékan
  Megachiroptera Dobson, 1875 -- invalid
  Megalonychidae Ameghino, 1889 -- valid -- Two-toed Sloths
  Megaptera Gray, 1846 -- valid -- humpback whales
  Megaptera novaeangliae (Borowski, 1781) -- valid -- Ballena jorobada, Humpback Whale, rorqual à bosse
  Mephitidae Bonaparte, 1845 -- valid -- skunks
  Mephitinae Bonaparte, 1845 -- invalid
  Mephitis É. Geoffroy Saint-Hilaire and F. G. Cuvier, 1795 -- valid -- hooded skunks, striped skunks
  Mephitis macroura Lichtenstein, 1832 -- valid -- Hooded Skunk, Zorrillo-listado del sur
  Mephitis mephitis (Schreber, 1776) -- valid -- mouffette rayée, Striped Skunk, Zorrillo-listado del norte
  Mesoplodon Gervais, 1850 -- valid -- beaked whales
  Mesoplodon bidens (Sowerby, 1804) -- valid -- North Atlantic beaked whale, Sowerby's Beaked Whale
  Mesoplodon bowdoini Andrews, 1908 -- valid -- Andrew's Beaked Whale
  Mesoplodon carlhubbsi Moore, 1963 -- valid -- arch-beaked whale, archbeaked whale, Ballena-picuda de Hubb, Hubbs' Beaked Whale, Hubbs's Beaked Whale
  Mesoplodon densirostris (Blainville, 1817) -- valid -- Ballena-picuda de Blainsville, Blainville's Beaked Whale, dense-beaked whale, densebeak whale
  Mesoplodon europaeus (Gervais, 1855) -- valid -- Gervais' Beaked Whale, Gervais's Beaked Whale
  Mesoplodon ginkgodens Nishiwaki and Kamiya, 1958 -- valid -- Ballena-picuda japonesa, Ginkgo-toothed Beaked Whale, ginkgo-toothed whale
  Mesoplodon grayi von Haast, 1876 -- valid -- Gray's Beaked Whale, Haast's beaked whale
  Mesoplodon hectori (Gray, 1871) -- valid -- Hector's Beaked Whale
  Mesoplodon layardii (Gray, 1865) -- valid -- Layard's beaked whale, Strap-toothed Whale
  Mesoplodon mirus True, 1913 -- valid -- True's Beaked Whale
  Mesoplodon peruvianus Reyes, Mead and Van Waerebeek, 1991 -- valid -- Ballena-picuda peruana, Peruvian beaked whale, Pygmy Beaked Whale
  Mesoplodon stejnegeri True, 1885 -- valid -- Bering Sea beaked whale, Stejneger's Beaked Whale
  Metachirus Burmeister, 1854 -- valid -- brown four-eyed opossum
  Metachirus nudicaudatus (É. Geoffroy Saint-Hilaire, 1803) -- valid -- Brown Four-eyed Opossum, Tlacuache-cuatrojos café
  Metatheria Huxley, 1880 -- valid
  Micoureus Lesson, 1842 -- valid
  Micoureus alstoni (J. A. Allen, 1900) -- valid -- Alston's Mouse Opossum
  Micoureus constantiae (Thomas, 1904) -- valid -- White-bellied Woolly Mouse Opossum
  Micoureus demerarae (Thomas, 1905) -- valid -- Woolly Mouse Opossum
  Micoureus regina (Thomas, 1898) -- valid -- Bare-tailed Woolly Mouse Opossum
  Microbiotheria Ameghino, 1889 -- valid
  Microbiotheriidae Ameghino, 1887 -- valid
  Microchiroptera Dobson, 1875 -- invalid
  Microdipodops Merriam, 1891 -- valid -- Kangaroo Mice
  Microdipodops megacephalus Merriam, 1891 -- valid -- Dark Kangaroo Mouse
  Microdipodops pallidus Merriam, 1901 -- valid -- Pale Kangaroo Mouse
  Microsorex Coues, 1877 -- invalid
  Microsorex hoyi (Baird, 1857) -- invalid
  Microtus Schrank, 1798 -- valid -- Meadow Mice, Meadow Voles
  Microtus abbreviatus Miller, 1899 -- valid -- Insular Vole, St. Matthews Island vole
  Microtus breweri (Baird, 1857) -- valid -- Beach Vole
  Microtus californicus (Peale, 1848) -- valid -- Amargosa Vole, California Vole, Meteoro de California
  Microtus californicus californicus (Peale, 1848) -- invalid -- California vole
  Microtus californicus scirpensis Bailey, 1900 -- invalid -- Amargosa vole
  Microtus canicaudus Miller, 1897 -- valid -- Gray-tailed Vole
  Microtus chrotorrhinus (Miller, 1894) -- valid -- campagnol des rochers, Rock Vole
  Microtus coronarius Swarth, 1911 -- invalid -- Coronation Island vole
  Microtus gregalis (Pallas, 1779) -- valid -- Narrow-headed Vole, Narrow-skulled Vole
  Microtus longicaudus (Merriam, 1888) -- valid -- Coronation Island vole, Long-tailed Vole
  Microtus ludovicianus Bailey, 1900 -- invalid
  Microtus mexicanus (Saussure, 1861) -- valid -- Meteoro mexicano, Mexican Vole
  Microtus mexicanus hualpaiensis Goldman, 1938 -- invalid -- Haulapai Mexican vole
  Microtus mexicanus mexicanus (Saussure, 1861) -- invalid -- Mexican vole
  Microtus miurus Osgood, 1901 -- valid -- Singing Vole
  Microtus mogollonensis (Mearns, 1890) -- invalid -- Mogollon vole
  Microtus montanus (Peale, 1848) -- valid -- Montane Vole
  Microtus nesophilus Bailey, 1898 -- invalid -- Gull Island vole
  Microtus ochrogaster (Wagner, 1842) -- valid -- Prairie Vole
  Microtus oeconomus (Pallas, 1776) -- valid -- Root Vole, Tundra Vole
  Microtus oregoni (Bachman, 1839) -- valid -- Creeping Vole
  Microtus parvulus (A. H. Howell, 1916) -- invalid
  Microtus pennsylvanicus (Ord, 1815) -- valid -- campagnol des champs, Meadow Vole, Meteoro de prado
  Microtus pennsylvanicus dukecampbelli Woods, Post and Kilpatrick, 1982 -- invalid -- Florida salt marsh vole
  Microtus pennsylvanicus pennsylvanicus (Ord, 1815) -- invalid
  Microtus pinetorum (Le Conte, 1830) -- valid -- campagnol sylvestre, Pine Vole, Woodland Vole
  Microtus pinetorum nemoralis Bailey, 1898 -- invalid
  Microtus pinetorum parvulus (A. H. Howell, 1916) -- invalid
  Microtus ratticeps (Keyserling and Blasius, 1841) -- invalid
  Microtus richardsoni (DeKay, 1842) -- valid -- North American Water Vole, Water Vole
  Microtus townsendii (Bachman, 1839) -- valid -- Townsend's Vole
  Microtus xanthognathus (Leach, 1815) -- valid -- Taiga Vole, Yellow-cheeked Vole
  Mirounga Gray, 1827 -- valid -- elephant seals
  Mirounga angustirostris (Gill, 1866) -- valid -- Elefante-marino norteño, Northern Elephant Seal, northern sea elephant
  Mirounga leonina (Linnaeus, 1758) -- valid -- Southern Elephant Seal, southern sea elephant
  Molossidae Gervais, 1856 -- valid -- free-tailed bats
  Molossus E. Geoffroy, 1805 -- valid -- velvety free-tailed bats
  Molossus molossus (Pallas, 1766) -- valid -- Murciélago-mastín de Pallas, Pallas' free-tailed bat, Pallas's mastiff bat, Pallas's Mastiff Bat
  Monachus Fleming, 1822 -- valid -- monk seals
  Monachus monachus (Hermann, 1779) -- valid -- Mediterranean Monk Seal
  Monachus schauinslandi Matschie, 1905 -- valid -- Hawaiian Monk Seal
  Monachus tropicalis (Gray, 1850) -- valid -- Caribbean Monk Seal, Foca-monje del Caribe, West Indian monk seal
  Monodelphis Burnett, 1830 -- valid -- short-tailed opossums
  Monodelphis adusta (Thomas, 1897) -- valid -- Sepia Short-tailed Opossum
  Monodelphis americana (Müller, 1776) -- valid -- Northern Three-striped Opossum
  Monodelphis brevicaudata (Erxleben, 1777) -- valid -- Northern Red-sided Opossum
  Monodelphis dimidiata (Wagner, 1847) -- valid -- Yellow-sided Opossum
  Monodelphis domestica (Wagner, 1842) -- valid -- Gray Short-tailed Opossum
  Monodelphis emiliae (Thomas, 1912) -- valid -- Emilia's Short-tailed Opossum
  Monodelphis iheringi (Thomas, 1888) -- valid -- Ihering's Three-striped Opossum
  Monodelphis kunsi Pine, 1975 -- valid -- Pygmy Short-tailed Opossum
  Monodelphis maraxina Thomas, 1923 -- valid -- Marajó Short-tailed Opossum
  Monodelphis osgoodi Doutt, 1938 -- valid -- Osgood's Short-tailed Opossum
  Monodelphis rubida (Thomas, 1899) -- valid -- Chestnut-striped Opossum
  Monodelphis scalops (Thomas, 1888) -- valid -- Long-nosed Short-tailed Opossum
  Monodelphis sorex (Hensel, 1872) -- valid -- Southern Red-sided Opossum
  Monodelphis theresa Thomas, 1921 -- valid -- Southern Three-striped Opossum
  Monodelphis unistriata (Wagner, 1842) -- valid -- One-striped Opossum
  Monodon Linnaeus, 1758 -- valid -- narwhals
  Monodon monoceros Linnaeus, 1758 -- valid -- narval, Narwhal
  Monodontidae Gray, 1821 -- valid -- white whales
  Monophyllus Leach, 1821 -- valid -- Antillean long-tongued bats
  Monophyllus plethodon Miller, 1900 -- valid -- insular long-tongued bat, insular single leaf bat, Insular Single-leaf Bat
  Monophyllus redmani Leach, 1821 -- valid -- Leach's single leaf bat, Leach's Single-leaf Bat, Puerto Rican long-tongued bat
  Mormoopidae Saussure, 1860 -- valid -- ghost-faced bats, moustached bats, naked-backed bats
  Mormoops Leach, 1821 -- valid -- ghost-faced bats
  Mormoops blainvillii Leach, 1821 -- valid -- Antillean ghost-faced bat, Antillean Ghost-faced Bat, Blainville's ghost-faced bat
  Mormoops megalophylla (Peters, 1864) -- valid -- ghost-faced bat, Murciélago-barba arrugada norteño, Peter's ghost-faced bat, Peters's Ghost-faced Bat
  Muridae Illiger, 1811 -- valid -- campagnols, mice, rats, rats, souris, voles
  Murinae Illiger, 1811 -- valid -- Old World mice, Old World rats
  Mus Linnaeus, 1758 -- valid -- House Mice, Old World Mice
  Mus musculus Linnaeus, 1758 -- valid -- House Mouse, souris commune
  Mus palustris Harlan, 1837 -- invalid
  Mus polionotus Wagner, 1843 -- invalid
  Mus volans Linnaeus, 1758 -- invalid
  Mustela Linnaeus, 1758 -- valid -- ermines, ferrets, minks, weasels
  Mustela erminea Linnaeus, 1758 -- valid -- Ermine, hermine
  Mustela frenata Lichtenstein, 1831 -- valid -- belette à longue queue, Comadreja cola larga, Long-tailed Weasel
  Mustela lutris Linnaeus, 1758 -- invalid
  Mustela nigripes (Audubon and Bachman, 1851) -- valid -- Black-footed Ferret
  Mustela nivalis Linnaeus, 1766 -- valid -- belette pygmée, Least Weasel
  Mustela vison Schreber, 1777 -- invalid -- American mink, mink, vison d'Amérique
  Mustelidae Fischer, 1817 -- valid -- mustelids
  Mustelinae Fischer, 1817 -- valid -- martens, weasels, wolverines
  Mustilidae -- invalid -- mustelids
  Myocaster Kerr, 1792 -- invalid
  Myocastor Kerr, 1792 -- valid -- nutrias
  Myocastor coypus (Molina, 1782) -- valid -- coypu, Coypu, nutria, nutria
  Myocastoridae Ameghino, 1902 -- valid -- nutrias
  Myodes nigripes True, 1894 -- invalid
  Myomorpha Brandt, 1855 -- valid -- Gerbils, Hamsters, Lemmings, Mice, Rats, Rats, souris, Voles
  Myopotamus É. Geoffroy Saint-Hilaire, 1805 -- invalid
  Myotis Kaup, 1829 -- valid -- mouse-eared bats
  Myotis auriculus Baker and Stains, 1955 -- valid -- Miotis orejudo, Southwestern Myotis, southwestern myotis
  Myotis austroriparius (Rhoads, 1897) -- valid -- southeastern myotis, Southeastern Myotis
  Myotis californicus (Audubon and Bachman, 1842) -- valid -- California myotis, California Myotis, Californian Myotis, Miotis californiano
  Myotis ciliolabrum (Merriam, 1886) -- valid -- Miotis cara negra, small-footed myotis, western small-footed bat, Western Small-footed Myotis
  Myotis evotis (H. Allen, 1864) -- valid -- long-eared myotis, Long-eared Myotis, Miotis oreja larga
  Myotis fortidens Miller and G. M. Allen, 1928 -- valid -- cinnamon myotis, Cinnamon Myotis, Miotis canelo
  Myotis grisescens A. H. Howell, 1909 -- valid -- gray bat, gray myotis, Gray Myotis
  Myotis insularum (Dobson, 1878) -- valid -- insular myotis, Insular Myotis
  Myotis keenii (Merriam, 1895) -- valid -- Keen's myotis, Keen's Myotis
  Myotis leibii (Audubon and Bachman, 1842) -- valid -- chauve-souris pygmée, eastern small-footed bat, Eastern Small-footed Myotis, eastern small-footed myotis, small-footed myotis
  Myotis lucifugus (Le Conte, 1831) -- valid -- little brown bat, little brown myotis, Little Brown Myotis, Miotis norteamericano, petite chauve-souris brune
  Myotis septentrionalis (Trouessart, 1897) -- valid -- chauve-souris nordique, northern long-eared bat, Northern Myotis, northern myotis
  Myotis sodalis Miller and G. M. Allen, 1928 -- valid -- Indiana bat, Indiana Myotis
  Myotis thysanodes Miller, 1897 -- valid -- fringed myotis, Fringed Myotis, Miotis bordado
  Myotis velifer (J. A. Allen, 1890) -- valid -- cave myotis, Cave Myotis, Miotis mexicano
  Myotis volans (H. Allen, 1866) -- valid -- long-legged myotis, Long-legged Myotis, Miotis pata larga
  Myotis yumanensis (H. Allen, 1864) -- valid -- Miotis de Yuma, Yuma Myotis, Yuma myotis
  Myrmecophaga Linnaeus, 1758 -- valid -- giant anteaters
  Myrmecophaga tridactyla Linnaeus, 1758 -- valid -- Giant Anteater
  Myrmecophagidae Gray, 1825 -- valid -- American anteaters
  Mysticeti Flower, 1864 -- valid -- baleen whales
  Napaeozapus Preble, 1899 -- valid -- woodland jumping mice
  Napaeozapus insignis (Miller, 1891) -- valid -- souris sauteuse des bois, Woodland Jumping Mouse
  Nasua Storr, 1780 -- valid -- coatis
  Nasua narica (Linnaeus, 1766) -- valid -- Coatí norteño, White-nosed Coati
  Nasua nasua (Linnaeus, 1766) -- valid -- coati, South American Coati
  Neobalaenidae Gray, 1873 -- valid -- pygmy right whales
  Neofelis Gray, 1867 -- valid
  Neofelis nebulosa (Griffith, 1821) -- valid -- Clouded Leopard
  Neofiber True, 1884 -- valid -- Round-tailed Muskrats
  Neofiber alleni True, 1884 -- valid -- Round-tailed Muskrat
  Neophoca Gray, 1866 -- valid
  Neophoca cinerea (Péron, 1816) -- valid -- Australian sea lion, Australian Sealion, white-capped sea lion
  Neophocaena Palmer, 1899 -- valid
  Neophocaena phocaenoides (G. Cuvier, 1829) -- valid -- Finless Porpoise
  Neotoma Say and Ord, 1825 -- valid -- Packrats
  Neotoma albigula Hartley, 1894 -- valid -- Rata-cambalachera garganta blanca, White-throated Woodrat
  Neotoma cinerea (Ord, 1815) -- valid -- Bushy-tailed Woodrat
  Neotoma devia Goldman, 1927 -- valid -- Arizona Woodrat, Rata-cambalachera de Coronado
  Neotoma floridana (Ord, 1818) -- valid -- Eastern Woodrat
  Neotoma floridana floridana (Ord, 1818) -- invalid -- eastern woodrat
  Neotoma floridana smalli Sherman, 1955 -- invalid -- Key Largo woodrat
  Neotoma fuscipes Baird, 1857 -- valid -- Dusky-footed Woodrat, Rata-cambalachera patas oscuras
  Neotoma lepida Thomas, 1893 -- valid -- Desert Woodrat, Rata-cambalachera desértica
  Neotoma magister Baird, 1857 -- valid -- Allegheny Woodrat, Appalachian Woodrat
  Neotoma mexicana Baird, 1855 -- valid -- Mexican Woodrat, Rata-cambalachera mexicana
  Neotoma micropus Baird, 1855 -- valid -- Rata-cambalachera de pradera, Southern Plains Woodrat
  Neotoma stephensi Goldman, 1905 -- valid -- Stephen's Woodrat, Stephens's woodrat
  Neurotrichus Günther, 1880 -- valid -- American shrew-moles
  Neurotrichus gibbsii (Baird, 1858) -- valid -- American Shrew Mole, Gibbs's shrew mole, least shrew mole, Shrew-mole
  Noctilio Linnaeus, 1766 -- valid -- bulldog bats
  Noctilio leporinus (Linnaeus, 1758) -- valid -- greater bulldog bat, Greater Bulldog Bat, Murciélago-pescador mayor
  Noctilionidae Gray, 1821 -- valid -- bulldog bats
  Notiosorex Coues, 1877 -- valid -- desert shrews
  Notiosorex crawfordi (Coues, 1877) -- valid -- Crawford's Gray Shrew, Desert Shrew, gray shrew, Musaraña-desértica norteña
  Notopteris Gray, 1859 -- valid -- long-tailed fruit bats
  Notopteris macdonaldi Gray, 1859 -- valid -- Fijian Long-tailed Fruit Bat, long-tailed fruit bat
  Nyctereutes Temminck, 1838 -- valid
  Nyctereutes procyonoides (Gray, 1834) -- valid -- Asiatic Raccoon, Raccoon dog, Tanuki
  Nycticeius Rafinesque, 1819 -- valid -- evening bats
  Nycticeius humeralis (Rafinesque, 1818) -- valid -- evening bat, Evening Bat, Murciélago-crepuscular americano
  Nyctinomops Miller, 1902 -- valid -- free-tailed bats
  Nyctinomops femorosaccus (Merriam, 1889) -- valid -- Murciélago-cola suelta de bolsa, Pocketed Free-tailed Bat, pocketed free-tailed bat
  Nyctinomops macrotis (Gray, 1840) -- valid -- big free-tailed bat, Big Free-tailed Bat, Murciélago-cola suelta mayor
  Ochotona Link, 1795 -- valid -- Pikas
  Ochotona collaris (Nelson, 1893) -- valid -- Collared Pika
  Ochotona princeps (Richardson, 1828) -- valid -- American Pika, pika
  Ochotonidae Thomas, 1897 -- valid -- Pikas
  Ochrotomys Osgood, 1909 -- valid -- Golden Mice
  Ochrotomys nuttalli (Harlan, 1832) -- valid -- Golden Mouse
  Odobenidae Allen, 1880 -- valid -- walruses
  Odobenus Brisson, 1762 -- valid -- walruses
  Odobenus rosmarus (Linnaeus, 1758) -- valid -- morse, Walrus
  Odocoileinae Pocock, 1923 -- invalid
  Odocoileus Rafinesque, 1832 -- valid -- mule deer, white-tailed deer
  Odocoileus hemionus (Rafinesque, 1817) -- valid -- mule deer, Mule Deer, Venado bura
  Odocoileus virginianus (Zimmermann, 1780) -- valid -- cerf de Virginie, Venado cola blanca, white-tailed deer, White-tailed Deer
  Odocoileus virginianus clavium Barbour and G. M. Allen, 1922 -- valid -- Key deer
  Odocoileus virginianus leucurus (Douglas, 1829) -- valid -- Columbian white-tailed deer
  Odocoileus virginianus virginianus (Zimmermann, 1780) -- valid -- white-tailed deer
  Odontoceti Flower, 1867 -- valid -- toothed whales
  Ommatophoca Gray, 1844 -- valid
  Ommatophoca rossii Gray, 1844 -- valid -- bigeyed seal, Ross Seal
  Oncifelis Severtzov, 1858 -- invalid
  Oncifelis colocolo (Molina, 1782) -- invalid -- Pampas cat
  Oncifelis geoffroyi (d'Orbigny and Gervais, 1844) -- invalid -- Geoffroy's cat
  Ondatra Link, 1795 -- valid -- Muskrat, muskrats
  Ondatra americana Tiedemann, 1808 -- invalid
  Ondatra zibethicus (Linnaeus, 1766) -- valid -- Common Muskrat, Muskbeaver, Muskrat, rat musqué
  Ondatra zibethicus zibethicus (Linnaeus, 1766) -- invalid
  Onychomys Baird, 1857 -- valid -- Grasshopper Mice
  Onychomys arenicola Mearns, 1896 -- valid -- Chihuahuan Grasshopper Mouse, Mearns' Grasshopper Mouse, Mearns's Grasshopper Mouse, Ratón-saltamontes arenero
  Onychomys leucogaster (Wied-Neuwied, 1841) -- valid -- Northern Grasshopper Mouse, Ratón-saltamontes norteño
  Onychomys torridus (Coues, 1874) -- valid -- Ratón-saltamontes sureño, Southern Grasshopper Mouse
  Orcaella Gray, 1866 -- valid
  Orcaella brevirostris (Owen in Gray, 1866) -- valid -- Irrawaddy Dolphin, Irrawady Dolphin
  Orcinus Fitzinger, 1860 -- valid -- killer whales
  Orcinus orca (Linnaeus, 1758) -- valid -- épaulard, Killer Whale, orca, Orca común
  Oreamnos Rafinesque, 1817 -- valid -- mountain goats
  Oreamnos americanus (Blainville, 1816) -- valid -- mountain goat, Mountain Goat, Rocky Mountain goat
  Oryctolagus Lilljeborg, 1873 -- valid -- Old World rabbits
  Oryctolagus cuniculus (Linnaeus, 1758) -- valid -- European Rabbit
  Oryzomys Baird, 1857 -- valid -- Rice Rats
  Oryzomys argentatus Spitzer and Lazell, 1978 -- invalid
  Oryzomys couesi (Alston, 1877) -- valid -- Coues' Oryzomys, Coues' Rice Rat, Coues's Rice Rat, Rata-arrocera de Coues
  Oryzomys natator floridanus Merriam, 1901 -- invalid
  Oryzomys palustris (Harlan, 1837) -- valid -- Marsh Oryzomys, Marsh Rice Rat, Rata-arrocera de pantano
  Oryzomys palustris coloratus Bangs, 1898 -- invalid
  Oryzomys palustris natator Chapman, 1893 -- invalid -- Slver Rice Rat
  Oryzomys palustris palustris (Harlan, 1837) -- invalid -- Marsh Rice Rat
  Oryzomys palustris planirostris Hamilton, 1955 -- invalid
  Oryzomys palustris sanibeli Hamilton, 1955 -- invalid
  Oryzomys palustris texensis J. A. Allen, 1894 -- invalid
  Otaria Péron, 1816 -- valid
  Otaria byronia (de Blainville, 1820) -- invalid -- South American sea lion, South American sealion
  Otaria flavescens (Shaw, 1800) -- valid -- South American Sealion
  Otaria stellerii Lesson, 1828 -- invalid
  Otariidae Gray, 1825 -- valid -- eared seals, sea lions
  Otocolobus Brandt, 1842 -- invalid
  Otocolobus manul (Pallas, 1776) -- invalid -- Pallas' cat, Pallas's cat
  Otocyon Müller, 1836 -- valid
  Otocyon megalotis (Desmarest, 1822) -- valid -- Bat-eared Fox, Big-eared Fox
  Ovibos Blainville, 1816 -- valid -- muskoxen
  Ovibos moschatus (Zimmermann, 1780) -- valid -- boeuf musqué, Muskox, muskox, oomingmak
  Ovis Linnaeus, 1758 -- valid -- sheep
  Ovis aries Linnaeus, 1758 -- valid -- domestic sheep, mouflon, Red Sheep, sheep (feral)
  Ovis aries musimon (Pallas, 1811) -- valid
  Ovis aries ophion Blyth, 1841 -- valid -- urial
  Ovis canadensis Shaw, 1804 -- valid -- bighorn sheep, Bighorn Sheep, Borrego cimarrón
  Ovis dalli Nelson, 1884 -- valid -- dall sheep, Dall's Sheep, Dall's sheep, Fannin's sheep, Stone's sheep
  Ovis musimon (Pallas, 1811) -- invalid
  Ovis musimon musimon (Pallas, 1811) -- invalid
  Ovis musimon ophion Blyth, 1841 -- invalid -- urial
  Ovis orientalis Gmelin, 1774 -- invalid -- mouflon (western Asia)
  Panthera Oken, 1816 -- valid -- roaring cats
  Panthera leo (Linnaeus, 1758) -- valid -- Lion
  Panthera onca (Linnaeus, 1758) -- valid -- Jaguar, Jaguar
  Panthera pardus (Linnaeus, 1758) -- valid -- Leopard
  Panthera tigris (Linnaeus, 1758) -- valid -- Tiger
  Panthera tigris longipilis (Fitzinger, 1868) -- invalid -- Siberian tiger
  Panthera tigris tigris (Linnaeus, 1758) -- valid -- Bengal tiger
  Pantherinae Pocock, 1917 -- valid
  Pappogeomys Merriam, 1895 -- valid -- Mexican Pocket Gophers, tuzas
  Pappogeomys castanops (Baird, 1852) -- invalid -- Yellow-faced Pocket Gopher
  Parascalops True, 1894 -- valid -- hairy-tailed moles
  Parascalops breweri (Bachman, 1842) -- valid -- Brewer's mole, Hairy-tailed Mole, taupe à queue velue
  Paucituberculata Ameghino, 1894 -- valid
  Pecari Reichenbach, 1835 -- valid
  Pecari tajacu (Linnaeus, 1758) -- valid -- Collared Peccary, collared peccary, javelina
  Pedomys Baird, 1857 -- invalid
  Peponocephala Nishiwaki and Norris, 1966 -- valid -- melon-headed whales
  Peponocephala electra (Gray, 1846) -- valid -- Calderón, Melon-headed Whale
  Perissodactyla Owen, 1848 -- valid -- antas, Odd-toed Ungulates
  Perodipus heermanni morroensis Merriam, 1907 -- invalid
  Perodipus ingens Merriam, 1904 -- invalid
  Perodipus streatori Merriam, 1894 -- invalid
  Perognathinae Coues, 1875 -- valid
  Perognathus Wied-Neuwied, 1839 -- valid -- pocket mice, Silky Pocket Mice
  Perognathus alticola Rhoads, 1894 -- invalid -- White-eared Pocket Mouse
  Perognathus amplus Osgood, 1900 -- valid -- Arizona Pocket Mouse, Ratón-de abazones de Arizona
  Perognathus baileyi Merriam, 1894 -- invalid -- Bailey's pocket mouse
  Perognathus californicus Merriam, 1889 -- invalid -- California pocket mouse
  Perognathus fallax Merriam, 1889 -- invalid -- San Diego pocket mouse
  Perognathus fasciatus Wied-Neuwied, 1839 -- valid -- Olive-backed Pocket Mouse
  Perognathus flavescens Merriam, 1889 -- valid -- Plains Pocket Mouse, Ratón-de abazones de pradera
  Perognathus flavus Baird, 1855 -- valid -- Ratón-de abazones sedoso, Silky Pocket Mouse
  Perognathus formosus Merriam, 1889 -- invalid -- long-tailed pocket mouse
  Perognathus hispidus Baird, 1858 -- invalid -- hispid pocket mouse
  Perognathus inornatus Merriam, 1889 -- valid -- San Joaquin Pocket Mouse
  Perognathus intermedius Merriam, 1889 -- invalid -- rock pocket mouse
  Perognathus longimembris (Coues, 1875) -- valid -- Little Pocket Mouse, Ratón-de abazones menor
  Perognathus merriami J. A. Allen, 1892 -- valid -- Merriam's Pocket Mouse, Ratón-de abazones de Merriam
  Perognathus nelsoni Merriam, 1894 -- invalid -- Nelson's pocket mouse
  Perognathus parvus (Peale, 1848) -- valid -- Great Basin Pocket Mouse
  Perognathus penicillatus Woodhouse, 1852 -- invalid -- desert pocket mouse
  Perognathus spinatus Merriam, 1889 -- invalid -- spiny pocket mouse
  Perognathus xanthanotus Grinnell, 1912 -- invalid
  Peromyscus Gloger, 1841 -- valid -- Deer Mice, White-footed Mice
  Peromyscus attwateri J. A. Allen, 1895 -- valid -- Attwater's Mouse, Texas Deermouse, Texas mouse
  Peromyscus boylii (Baird, 1855) -- valid -- Brush Deermouse, Brush Mouse, Ratón arbustero
  Peromyscus californicus (Gambel, 1848) -- valid -- California Deermouse, California Mouse, Ratón californiano
  Peromyscus crinitus (Merriam, 1891) -- valid -- Canyon Deermouse, Canyon Mouse, Ratón de cañada
  Peromyscus difficilis (J. A. Allen, 1891) -- valid -- Ratón de roca, Rock Mouse, Southern Rock Deermouse, Zacatecan Deer Mouse
  Peromyscus eremicus (Baird, 1857) -- valid -- Cactus Deermouse, Cactus Mouse, Ratón de cactus
  Peromyscus gossypinus (Le Conte, 1853) -- valid -- Cotton Deermouse, Cotton Mouse
  Peromyscus gossypinus allapaticola Schwartz, 1952 -- invalid -- Key Largo cotton mouse
  Peromyscus gossypinus gossypinus (Le Conte, 1853) -- invalid -- cotton mouse
  Peromyscus gratus Merriam, 1898 -- valid -- Merriam's Piñon Mouse, Osgood's Mouse, Ratón de Tlalpan, Saxicoline Deermouse
  Peromyscus keeni (Rhoads, 1894) -- valid -- Keen's Mouse, Northwestern Deermouse
  Peromyscus leucocephalus A. H. Howell, 1920 -- invalid
  Peromyscus leucopus (Rafinesque, 1818) -- valid -- souris à pattes blanches, White-footed Deermouse, White-footed Mouse
  Peromyscus maniculatus (Wagner, 1845) -- valid -- Deer Mouse, North American Deermouse, Ratón norteamericano, souris sylvestre
  Peromyscus melanotis J. A. Allen and Chapman, 1897 -- valid -- Black-eared Deermouse, Black-eared Mouse, Ratón orejas negras
  Peromyscus merriami Mearns, 1896 -- valid -- Merriam's Deermouse, Merriam's Mouse, Mesquite Mouse, Ratón de Merriam
  Peromyscus nasutus (J. A. Allen, 1891) -- valid -- Northern Rock Deermouse, Northern Rock Mouse, Ratón de Nuevo Mexico, Rock Mouse
  Peromyscus nuttalli (Harlan, 1832) -- invalid
  Peromyscus pectoralis Osgood, 1904 -- valid -- Ratón tobillo blanco, White-ankled Deermouse, White-ankled Mouse
  Peromyscus phasma Bangs, 1898 -- invalid
  Peromyscus polionotus (Wagner, 1843) -- valid -- Oldfield Deermouse, Oldfield Mouse
  Peromyscus polionotus albifrons Osgood, 1909 -- invalid
  Peromyscus polionotus allophrys Bowen, 1968 -- invalid -- Choctawhatchee beach mouse
  Peromyscus polionotus ammobates Bowen, 1968 -- invalid -- Alabama beach mouse
  Peromyscus polionotus colemani Schwartz, 1954 -- invalid
  Peromyscus polionotus decoloratus A. H. Howell, 1939 -- invalid
  Peromyscus polionotus leucocephalus A. H. Howell, 1920 -- invalid
  Peromyscus polionotus lucubrans Schwartz, 1954 -- invalid
  Peromyscus polionotus niveiventris (Chapman, 1889) -- invalid -- southeastern beach mouse
  Peromyscus polionotus peninsularis A. H. Howell, 1939 -- invalid -- St. Andrew beach mouse
  Peromyscus polionotus phasma Bangs, 1898 -- invalid -- Anastasia Island beach mouse
  Peromyscus polionotus polionotus (Wagner, 1843) -- invalid -- Oldfield Mouse
  Peromyscus polionotus rhoadsi Bangs, 1898 -- invalid
  Peromyscus polionotus subgriseus (Chapman, 1893) -- invalid
  Peromyscus polionotus trissyllepsis Bowen, 1968 -- invalid -- Perdido Key beach mouse
  Peromyscus sitkensis Merriam, 1897 -- invalid -- Sitka mouse
  Peromyscus subgriseus baliolus Bangs, 1898 -- invalid
  Peromyscus subgriseus rhoadsi Bangs, 1898 -- invalid
  Peromyscus truei (Shufeldt, 1885) -- valid -- Piñon Deermouse, piñon mouse, Pinyon Mouse, Ratón piñonero
  Phenacomys Merriam, 1889 -- valid -- Heather Voles
  Phenacomys intermedius Merriam, 1889 -- valid -- Heather Vole, phénacomys, Western Heather Vole
  Phenacomys ungava Merriam, 1889 -- valid -- Eastern Heather Vole, Ungava vole
  Philander Brisson, 1762 -- valid -- black four-eyed opossums, gray four-eyed opossums
  Philander andersoni (Osgood, 1913) -- valid -- Anderson's Four-eyed Opossum, black four-eyed opossum
  Philander opossum (Linnaeus, 1758) -- valid -- Gray Four-eyed Opossum, Tlacuache-cuatrojos gris
  Phoca Linnaeus, 1758 -- valid -- hair seals, harbor seals
  Phoca caspica Gmelin, 1788 -- invalid -- Caspian seal
  Phoca fasciata Zimmermann, 1783 -- invalid -- ribbon seal
  Phoca groenlandica Erxleben, 1777 -- invalid -- harp seal, phoque du Groenland
  Phoca hispida Schreber, 1775 -- invalid -- phoque annelé, ringed seal
  Phoca jubata Schreber, 1776 -- invalid
  Phoca largha Pallas, 1811 -- valid -- Spotted Seal
  Phoca sibirica Gmelin, 1788 -- invalid -- Baikal seal
  Phoca tropicalis Gray, 1850 -- invalid
  Phoca vitulina Linnaeus, 1758 -- valid -- Foca común, Harbor Seal, phoque commun
  Phoca vitulina largha Pallas, 1811 -- invalid
  Phoca vitulina richardii (Gray, 1864) -- valid
  Phoca vitulina richardsi (Gray, 1864) -- invalid
  Phoca vitulina vitulina Linnaeus, 1758 -- valid
  Phocarctos Peters, 1866 -- valid
  Phocarctos hookeri (Gray, 1844) -- valid -- Auckland sea lion, Hooker's sea lion, New Zealand sea lion, New Zealand Sealion
  Phocidae Gray, 1821 -- valid -- earless seals, true seals
  Phocoena G. Cuvier, 1816 -- valid -- common porpoises, harbor porpoises
  Phocoena dioptrica Lahille, 1912 -- valid -- Spectacled Porpoise
  Phocoena phocoena (Linnaeus, 1758) -- valid -- common porpoise, Harbor Porpoise, marsouin commun
  Phocoena sinus Norris and McFarland, 1958 -- valid -- cochito, Gulf of California harbor porpoise, Marsopa vaquita, Vaquita
  Phocoena spinipinnis Burmeister, 1865 -- valid -- black porpoise, Burmeister's Porpoise
  Phocoenidae Gray, 1825 -- valid -- porpoises
  Phocoenoides Andrews, 1911 -- valid -- Dall's porpoises
  Phocoenoides dalli (True, 1885) -- valid -- Dall's Porpoise, Marsopa de Dall, True's Porpoise
  Pholidota Weber, 1904 -- valid -- Pangolins, pholidotes, scaly anteaters
  Phyllonycterinae Miller, 1907 -- invalid
  Phyllostomidae Gray, 1825 -- valid -- New World leaf-nosed bats
  Phyllostominae Gray, 1825 -- valid
  Physeter Linnaeus, 1758 -- valid -- sperm whales
  Physeter catodon Linnaeus, 1758 -- invalid -- Sperm Whale
  Physeter macrocephalus Linnaeus, 1758 -- valid -- Sperm Whale
  Physeteridae Gray, 1821 -- valid -- sperm whales
  Pinnipedia -- invalid
  Pipistrellus Kaup, 1829 -- valid -- pipistrelles
  Pipistrellus hesperus (H. Allen, 1864) -- invalid -- Pipistrelo del oeste americano, Western Pipistrelle
  Pipistrellus subflavus (F. Cuvier, 1832) -- invalid -- Eastern Pipistrelle, pipistrelle de l'est, Pipistrelo del este americano
  Pitymys McMurtrie, 1831 -- invalid
  Pitymys parvulus A. H. Howell, 1916 -- invalid
  Pitymys pinetorum (Le Conte, 1830) -- invalid
  Platanista Wagler, 1830 -- valid -- Ganges dolphins, Indus dolphins, susu
  Platanista gangetica (Roxburgh, 1801) -- valid -- Ganges River Dolphin, Ganges river-dolphin, susu
  Platanista minor Owen, 1853 -- valid -- Indus River Dolphin, Indus susu
  Platanistidae Gray, 1846 -- valid -- river dolphins
  Plecotus E. Geoffroy, 1818 -- valid -- big-eared bats
  Plecotus mexicanus (G. M. Allen, 1916) -- invalid -- Mexican big-eared bat, Murciélago-mula Mexicano
  Plecotus rafinesquii Lesson, 1827 -- invalid -- Rafinesque's big-eared bat
  Plecotus townsendii Cooper, 1837 -- invalid -- Townsend's big-eared bat
  Plecotus townsendii ingens (Handley, 1955) -- invalid -- Ozark big-eared bat
  Plecotus townsendii intermedius (H. W. Grinnell, 1914) -- invalid
  Plecotus townsendii mexicanus (G. M. Allen, 1916) -- invalid
  Plecotus townsendii pallescens (Miller, 1897) -- invalid -- pale Townsend's big-eared bat
  Plecotus townsendii townsendii Cooper, 1837 -- invalid -- Pacific Townsend's big-eared bat, Townsend's big-eared bat
  Plecotus townsendii virginianus (Handley, 1955) -- invalid -- Virginia big-eared bat
  Podomys Osgood, 1909 -- valid -- Florida mice
  Podomys floridanus (Chapman, 1889) -- valid -- Florida Deermouse, Florida mouse
  Pontoporia Gray, 1846 -- valid
  Pontoporia blainvillei (Gervais and d'Orbigny, 1844) -- valid -- Franciscana, La Plata dolphin
  Primates Linnaeus, 1758 -- valid -- homem, macaco, primata, primates, primates, sagui
  Priodontes F. Cuvier, 1825 -- valid -- giant armadillos
  Priodontes giganteus (G. Fischer, 1814) -- invalid
  Priodontes maximus (Kerr, 1792) -- valid -- Giant Armadillo
  Prionailurus Severtzov, 1858 -- valid
  Prionailurus bengalensis (Kerr, 1792) -- valid -- Leopard Cat
  Prionailurus rubiginosus (I. Geoffroy Saint-Hilaire, 1831) -- valid -- Rusty-Spotted Cat
  Prionailurus viverrinus (Bennett, 1833) -- valid -- Fishing Cat
  Proboscidea Illiger, 1811 -- valid -- Elephants
  Procyon Storr, 1780 -- valid -- raccoons
  Procyon lotor (Linnaeus, 1758) -- valid -- common raccoon, Mapache común, northern raccoon, Raccoon, raton laveur
  Procyonidae Gray, 1825 -- valid -- procyonids
  Procyoninae Gray, 1825 -- invalid
  Prototheria Gill, 1872 -- valid -- egg-laying mammals
  Psammomys pinetorum Le Conte, 1830 -- invalid
  Pseudochirops Matschie, 1915 -- valid
  Pseudorca Reinhardt, 1862 -- valid -- false killer whales
  Pseudorca crassidens (Owen, 1846) -- valid -- False Killer Whale, Orca-falsa
  Pteromyinae Brandt, 1855 -- invalid
  Pteronotus Gray, 1838 -- valid -- moustached bats, naked-backed bats
  Pteronotus parnellii (Gray, 1843) -- valid -- Common Mustached Bat, Murciélago-bigotudo de Parnell, Parnell's moustached bat, Parnell's mustached bat
  Pteronotus quadridens (Gundlach, 1840) -- valid -- sooty moustached bat, Sooty Mustached Bat, sooty mustached bat
  Pteropodidae Gray, 1821 -- valid -- flying foxes, Old World fruit bats
  Pteropodinae Gray, 1821 -- valid -- Old World fruit bats
  Pteropus Brisson, 1762 -- valid -- flying foxes
  Pteropus admiralitatum Thomas, 1894 -- valid -- Admirality flying fox, Admiralty Flying Fox, admiralty flying fox
  Pteropus insularis Hombron and Jacquinot, 1842 -- valid -- ruck flying fox, Ruck Flying Fox, Truk flying fox
  Pteropus mariannus Desmarest, 1822 -- valid -- Mariana flying fox, Mariana fruit bat, Marianas Flying Fox, Marianas flying fox
  Pteropus molossinus Temminck, 1853 -- valid -- Caroline flying fox, Caroline Flying Fox, Ponape flying fox
  Pteropus phaeocephalus Thomas, 1882 -- invalid -- mortlock flying fox, Mortlock fruit bat
  Pteropus pilosus K. Andersen, 1908 -- valid -- large Palau flying fox, Large Pelew Flying Fox, Palau flying fox
  Pteropus rodricensis Dobson, 1878 -- valid -- flying fox, Rodrigues Flying Fox, Rodrigues fruit bat, Rodrigues Island flying fox, Rodriguez flying fox
  Pteropus samoensis Peale, 1848 -- valid -- Samoa flying fox, Samoan Flying Fox, Samoan flying fox
  Pteropus tokudae Tate, 1934 -- valid -- Guam flying fox, Guam Flying Fox, little Mariana fruit bat, Tokuda's flying fox
  Pteropus tonganus Quoy and Gaimard, 1830 -- valid -- insular flying fox, Pacific Flying Fox, Pacific flying fox
  Puma Jardine, 1834 -- valid -- pumas
  Puma concolor (Linnaeus, 1771) -- valid -- Cougar, mountain lion, Puma, Puma
  Puma concolor azteca (Merriam, 1901) -- invalid
  Puma concolor browni (Merriam, 1903) -- invalid
  Puma concolor californica (May, 1896) -- invalid
  Puma concolor concolor (Linnaeus, 1771) -- valid -- mountain lion, puma
  Puma concolor coryi (Bangs, 1899) -- invalid -- Florida panther
  Puma concolor costaricensis (Merriam, 1901) -- valid -- Costa Rican puma
  Puma concolor couguar (Kerr, 1792) -- valid -- eastern cougar, eastern puma
  Puma concolor hippolestes (Merriam, 1897) -- invalid
  Puma concolor improcera (Phillips, 1912) -- invalid
  Puma concolor kaibabensis (Nelson and Goldman, 1931) -- invalid
  Puma concolor mayensis (Nelson and Goldman, 1929) -- invalid
  Puma concolor missoulensis (Goldman, 1943) -- invalid
  Puma concolor oregonensis (Rafinesque, 1832) -- invalid
  Puma concolor schorgeri (Jackson, 1955) -- invalid
  Puma concolor stanleyana (Goldman, 1938) -- invalid
  Puma concolor vancouverensis (Nelson and Goldman, 1932) -- invalid
  Putorius nigripes Audubon and Bachman, 1851 -- invalid
  Rangifer C. H. Smith, 1827 -- valid -- caribou, reindeer
  Rangifer tarandus (Linnaeus, 1758) -- valid -- caribou, caribou, Reindeer, reindeer
  Rangifer tarandus caribou (Gmelin, 1788) -- valid -- woodland caribou
  Rangifer tarandus tarandus (Linnaeus, 1758) -- valid -- caribou
  Rattus Fischer, 1803 -- valid -- Old World Rats
  Rattus exulans (Peale, 1848) -- valid -- Little Rat, Pacific Rat, Polynesian rat
  Rattus nitidus (Hodgson, 1845) -- valid -- Himalayan Field Rat, Himalayan Rat, White-footed Indochinese Rat
  Rattus norvegicus (Berkenhout, 1769) -- valid -- Brown Rat, Norway Rat, rat surmulot
  Rattus rattus (Linnaeus, 1758) -- valid -- Black Rat, House Rat, rat noir, Roof Rat
  Reduncinae Knottnerus-Meyer, 1907 -- valid
  Reithrodontomys Giglioli, 1874 -- valid -- American Harvest Mice, Harvest Mice
  Reithrodontomys fulvescens J. A. Allen, 1894 -- valid -- Fulvous Harvest Mouse, Ratón-cosechero leonado
  Reithrodontomys humulis (Audubon and Bachman, 1841) -- valid -- Eastern Harvest Mouse
  Reithrodontomys megalotis (Baird, 1857) -- valid -- Ratón-cosechero común, Western Harvest Mouse
  Reithrodontomys montanus (Baird, 1855) -- valid -- Plains Harvest Mouse, Ratón-cosechero de pradera
  Reithrodontomys raviventris Dixon, 1908 -- valid -- Salt-marsh Harvest Mouse
  Rhyncholestes Osgood, 1924 -- valid -- Chilean 'shrew' opossums
  Rhyncholestes raphanurus Osgood, 1924 -- valid -- Chilean 'shrew' opossum, Long-nosed Caenolestid
  Rodentia Bowdich, 1821 -- valid -- esquilo, preá, rato, rodents, roedor, rongeurs
  Saimiri Voigt in G. Cuvier, 1831 -- valid -- squirrel monkeys
  Saimiri sciureus (Linnaeus, 1758) -- valid -- Common Squirrel Monkey, Guianan Squirrel Monkey, South American squirrel monkey
  Scalopus Desmarest, 1804 -- invalid
  Scalopus aquaticus (Linnaeus, 1758) -- valid -- Eastern Mole, Topo occidental, topos
  Scandentia Wagner, 1855 -- valid -- Tree Shrews, Treeshrews
  Scapanus Pomel, 1848 -- valid -- western moles
  Scapanus latimanus (Bachman, 1842) -- valid -- Broad-footed Mole, Topo pata ancha, topociego
  Scapanus orarius True, 1896 -- valid -- Coast Mole, Pacific mole, red-footed mole
  Scapanus townsendii (Bachman, 1839) -- valid -- snow mole, Townsend's Mole
  Sciuridae Fischer de Waldheim, 1817 -- valid -- chipmunks, marmots, squirrels
  Sciurinae Fischer de Waldheim, 1817 -- valid
  Sciurognathi -- invalid
  Sciuromorpha Brandt, 1855 -- valid -- squirrels
  Sciurus Linnaeus, 1758 -- valid -- tree squirrels
  Sciurus aberti Woodhouse, 1853 -- valid -- Abert's Squirrel, Ardilla de Albert
  Sciurus arizonensis Coues, 1867 -- valid -- Ardilla de Arizona, Arizona Gray Squirrel
  Sciurus aureogaster F. Cuvier, 1829 -- valid -- Ardilla vientre rojo, Mexican gray squirrel, Red-bellied Squirrel
  Sciurus carolinensis Gmelin, 1788 -- valid -- Eastern Gray Squirrel, écureuil gris, gray squirrel
  Sciurus cinereus Linnaeus, 1758 -- invalid
  Sciurus griseus Ord, 1818 -- valid -- Ardilla gris, Western Gray Squirrel
  Sciurus nayaritensis J. A. Allen, 1890 -- valid -- Ardilla de Nayarit, Mexican Fox Squirrel, Nayarit squirrel
  Sciurus niger Linnaeus, 1758 -- valid -- Ardilla zorra, Eastern Fox Squirrel, fox squirrel
  Sciurus niger bryanti H. H. Bailey, 1920 -- invalid
  Sciurus niger cinereus Linnaeus, 1758 -- valid -- Delmarva Peninsula fox squirrel, eastern fox squirrel
  Sciurus niger niger Linnaeus, 1758 -- valid -- fox squirrel
  Sciurus sabrinus Shaw, 1801 -- invalid
  Sigmodon Say and Ord, 1825 -- valid -- Cotton Rats
  Sigmodon arizonae Mearns, 1890 -- valid -- Arizona Cotton Rat, Rata-algodonera de Arizona
  Sigmodon fulviventer J. A. Allen, 1889 -- valid -- Rata-algodonera vientre leonado, Tawny-bellied Cotton Rat, Zacatecan Cotton Rat
  Sigmodon hispidus Say and Ord, 1825 -- valid -- Hispid Cotton Rat, Rata-algodonera crespa
  Sigmodon ochrognathus Bailey, 1902 -- valid -- Rata-algodonera nariz amarilla, Yellow-nosed Cotton Rat
  Sigmodontinae Wagner, 1843 -- valid -- New World mice, New World rats
  Sirenia Illiger, 1811 -- valid -- dugongs, manatees, sea cows, sirens
  Sitomys viveiventris subgriseus Chapman, 1893 -- invalid
  Sorex Linnaeus, 1758 -- valid -- red-toothed shrews
  Sorex alaskanus Merriam, 1900 -- valid -- Glacier Bay Water Shrew
  Sorex arcticus Kerr, 1792 -- valid -- Arctic Shrew, black-backed shrew, musaraigne arctique, musaraigne nordique, saddle-back shrew
  Sorex arizonae Diersing and Hoffmeister, 1977 -- valid -- Arizona Shrew, Musaraña de Arizona
  Sorex bairdii Merriam, 1895 -- invalid -- Baird's Shrew
  Sorex bendirii (Merriam, 1884) -- valid -- Bendire's shrew, Bendire's water shrew, Marsh Shrew, Pacific marsh shrew, Pacific water shrew
  Sorex cinereus Kerr, 1792 -- valid -- Cinereus Shrew, common shrew, masked shrew, musaraigne cendrée
  Sorex dispar Batchelder, 1911 -- valid -- gray long-tailed shrew, Long-tailed Shrew, musaraigne longicaude, rock shrew
  Sorex fisheri Merriam, 1895 -- invalid
  Sorex fontinalis Hollister, 1911 -- invalid -- eastern shrew, Maryland shrew
  Sorex fumeus G. M. Miller, 1895 -- valid -- musaraigne fuligineuse, smokey shrew, Smoky Shrew
  Sorex gaspensis Anthony and Goodwin, 1924 -- valid -- Gaspé Shrew, musaraigne de Gaspé
  Sorex haydeni Baird, 1857 -- valid -- Hayden's shrew, Prairie Shrew
  Sorex hoyi Baird, 1857 -- valid -- American Pygmy Shrew, musaraigne pygmée, Pygmy Shrew
  Sorex hydrodromus Dobson, 1889 -- invalid -- Pribilof Islands shrew
  Sorex jacksoni Hall and Gilmore, 1932 -- valid -- St. Lawrence Island Shrew
  Sorex longirostris Bachman, 1837 -- valid -- Southeastern Shrew
  Sorex longirostris fisheri Merriam, 1895 -- valid -- Dismal Swamp southeastern shrew
  Sorex longirostris longirostris Bachman, 1837 -- valid -- southern shrew
  Sorex lyelli Merriam, 1902 -- valid -- Lyell shrew, Mount Lyell shrew, Mt. Lyell Shrew
  Sorex merriami Dobson, 1890 -- valid -- Merriam's Shrew
  Sorex minutissimus Zimmermann, 1780 -- valid -- Asian minute shrew, Eurasian Least Shrew, miniscule shrew
  Sorex monticolus Merriam, 1890 -- valid -- Dusky Shrew, Montane Shrew
  Sorex monticolus neomexicanus Bailey, 1913 -- invalid -- New Mexico shrew
  Sorex nanus Merriam, 1895 -- valid -- Dwarf Shrew, Rocky Mountain dwarf shrew
  Sorex neomexicanus Bailey, 1913 -- valid -- New Mexico Shrew
  Sorex ornatus Merriam, 1895 -- valid -- Musaraña adornada, Ornate Shrew, Suisun shrew
  Sorex pacificus Coues, 1877 -- valid -- Pacific Shrew
  Sorex palustris Richardson, 1828 -- valid -- American Water Shrew, musaraigne palustre, northern water shrew, Water Shrew
  Sorex preblei Jackson, 1922 -- valid -- malheur shrew, Preble's Shrew
  Sorex pribilofensis Merriam, 1895 -- valid -- Pribilof Island Shrew
  Sorex sonomae Jackson, 1921 -- valid -- Fog Shrew, Sonoma shrew
  Sorex tenellus Merriam, 1895 -- valid -- great basin dwarf shrew, Inyo Shrew
  Sorex trowbridgii Baird, 1857 -- valid -- Trowbridge's Shrew
  Sorex tundrensis Merriam, 1900 -- valid -- Tundra Shrew
  Sorex ugyunak Anderson and Rand, 1945 -- valid -- Barren Ground Shrew
  Sorex vagrans Baird, 1857 -- valid -- Vagrant Shrew, wandering shrew
  Sorex wagneri Fitzinger, 1968 -- invalid
  Sorex yukonicus Dokuchaev, 1997 -- valid -- Alaska tiny shrew, Alaskan Tiny Shrew
  Soricidae G. Fischer, 1814 -- valid -- shrews
  Soricinae G. Fischer, 1814 -- valid
  Sotalia Gray, 1866 -- valid
  Sotalia fluviatilis (Gervais and Deville, 1853) -- valid -- Gray Dolphin, gray river dolphin, Tucuxi
  Sotalia fluviatilis fluviatilis (Gervais and Deville, 1853) -- invalid
  Sotalia fluviatilis guianensis (P.-J. van Bénéden, 1864) -- invalid
  Sousa Gray, 1866 -- valid -- humpbacked dolphins
  Sousa chinensis (Osbeck, 1765) -- valid -- Chinese white dolphin, Indo-Pacific Humpback Dolphin, Indo-Pacific Humpbacked Dolphin, Pacific humpback dolphin
  Sousa teuszii (Kükenthal, 1892) -- valid -- Atlantic Humpback Dolphin, Atlantic Humpbacked Dolphin, Teusz's dolphin
  Speothos Lund, 1839 -- valid
  Speothos venaticus (Lund, 1842) -- valid -- Bush Dog
  Spermophilus F. Cuvier, 1825 -- valid -- Ground Squirrels, old world ground squirrels
  Spermophilus armatus Kennicott, 1863 -- invalid -- Uinta Ground Squirrel
  Spermophilus beecheyi (Richardson, 1829) -- invalid -- Ardillón de California, California Ground Squirrel
  Spermophilus beldingi Merriam, 1888 -- invalid -- Belding's Ground Squirrel
  Spermophilus brunneus (A. H. Howell, 1928) -- invalid -- Idaho Ground Squirrel, northern Idaho ground squirrel
  Spermophilus canus Merriam, 1898 -- invalid -- gray ground squirrel, Merriam's Ground Squirrel
  Spermophilus columbianus (Ord, 1815) -- invalid -- Columbian Ground Squirrel
  Spermophilus elegans Kennicott, 1863 -- invalid -- Wyoming Ground Squirrel
  Spermophilus franklinii (Sabine, 1822) -- invalid -- Franklin's Ground Squirrel
  Spermophilus lateralis (Say, 1823) -- invalid -- Golden-mantled Ground Squirrel
  Spermophilus mexicanus (Erxleben, 1777) -- invalid -- Ardillón mexicano, Mexican Ground Squirrel
  Spermophilus mohavensis Merriam, 1889 -- invalid -- Mohave Ground Squirrel
  Spermophilus mollis Kennicott, 1863 -- invalid -- Piute Ground Squirrel
  Spermophilus parryii (Richardson, 1825) -- invalid -- Arctic Ground Squirrel
  Spermophilus richardsonii (Sabine, 1822) -- invalid -- Richardson's Ground Squirrel
  Spermophilus saturatus (Rhoads, 1895) -- invalid -- Cascade Golden-mantled Ground Squirrel
  Spermophilus spilosoma Bennett, 1833 -- invalid -- Ardillón punteado, Spotted Ground Squirrel
  Spermophilus tereticaudus Baird, 1858 -- invalid -- Ardillón cola redonda, Round-tailed Ground Squirrel
  Spermophilus townsendii Bachman, 1839 -- invalid -- Townsend's Ground Squirrel
  Spermophilus tridecemlineatus (Mitchill, 1821) -- invalid -- Thirteen-lined Ground Squirrel
  Spermophilus variegatus (Erxleben, 1777) -- invalid -- Ardillón de roca, Rock Squirrel
  Spermophilus washingtoni (A. H. Howell, 1938) -- invalid -- Washington Ground Squirrel
  Spilogale Gray, 1865 -- valid -- spotted skunks
  Spilogale gracilis Merriam, 1890 -- valid -- Western Spotted Skunk
  Spilogale putorius (Linnaeus, 1758) -- valid -- Eastern Spotted Skunk, spotted skunk, Zorrillo-manchado común
  Stenella Gray, 1866 -- valid -- spinner dolphins, spotted dolphins, striped dolphins
  Stenella attenuata (Gray, 1846) -- valid -- Delfín moteado, Pantropical Spotted Dolphin
  Stenella attenuata attenuata (Gray, 1846) -- valid
  Stenella attenuata graffmani (Lönnberg, 1934) -- valid -- coastal spotted dolphin, Eastern Pacific Coastal Spotted Porpoise
  Stenella clymene (Gray, 1850) -- valid -- Clymene Dolphin, Delfín de Clymen, short-snouted spinner dolphin
  Stenella coeruleoalba (Meyen, 1833) -- valid -- Delfín listado, Striped Dolphin
  Stenella frontalis (G. Cuvier, 1829) -- valid -- Atlantic Spotted Dolphin, Delfín embridado
  Stenella longirostris (Gray, 1828) -- valid -- Delfín tornillo, long-snouted spinner dolphin, Spinner Dolphin
  Stenella plagiodon (Cope, 1866) -- invalid
  Steno Gray, 1846 -- valid -- rough-toothed dolphins
  Steno bredanensis (G. Cuvier in Lesson, 1828) -- valid -- Delfín dientes rugosos, Rough-toothed Dolphin
  Stenoderma E. Geoffroy, 1818 -- valid -- red fruit-eating bats
  Stenoderma rufum Desmarest, 1820 -- valid -- Desmarest's fig-eating bat, red fig-eating bat, Red Fruit Bat, red fruit bat
  Stenodermatinae Gervais, 1856 -- valid
  Suidae Gray, 1821 -- valid -- hogs, pigs
  Suinae Gray, 1821 -- valid
  Suncus Ehrenberg, 1832 -- valid -- white-toothed shrews
  Suncus murinus (Linnaeus, 1766) -- valid -- Asian House Shrew, house shrew
  Sus Linnaeus, 1758 -- valid -- pigs
  Sus scrofa Linnaeus, 1758 -- valid -- pig, pig (feral), Wild Boar, wild boar
  Sylvicapra Ogilby, 1837 -- valid
  Sylvicapra grimmia (Linnaeus, 1758) -- valid -- bush duiker, Bush Duiker, gray duiker
  Sylvilagus Gray, 1867 -- valid -- Cottontails
  Sylvilagus aquaticus (Bachman, 1837) -- valid -- Swamp Rabbit
  Sylvilagus audubonii (Baird, 1858) -- valid -- Desert Cottontail
  Sylvilagus bachmani (Waterhouse, 1839) -- valid -- Brush Rabbit, Conejo matorralero
  Sylvilagus floridanus (J. A. Allen, 1890) -- valid -- Conejo serrano, Eastern Cottontail, lapin à queue blanche
  Sylvilagus floridanus robustus (Bailey, 1905) -- invalid
  Sylvilagus idahoensis (Merriam, 1891) -- invalid -- pygmy rabbit
  Sylvilagus nuttallii (Bachman, 1837) -- valid -- Mountain Cottontail, Nuttall's cottontail
  Sylvilagus obscurus Chapman, Cramer, Deppenaar and Robinson, 1992 -- valid -- Appalachian Cottontail
  Sylvilagus palustris (Bachman, 1837) -- valid -- Marsh Rabbit
  Sylvilagus palustris hefneri Lazell, 1984 -- valid -- Lower Keys marsh rabbit, Lower Keys rabbit
  Sylvilagus palustris paludicola (Miller and Bangs, 1894) -- valid
  Sylvilagus palustris palustris (Bachman, 1837) -- valid
  Sylvilagus robustus (Bailey, 1905) -- valid -- Davis Mountain cottontail, Robust Cottontail
  Sylvilagus transitionalis (Bangs, 1895) -- valid -- New England Cottontail
  Synaptomys Baird, 1857 -- valid -- Bog Lemmings
  Synaptomys borealis (Richardson, 1828) -- valid -- campagnol-lemming boréale, Northern Bog Lemming
  Synaptomys cooperi Baird, 1857 -- valid -- campagnol-lemming de Cooper, Southern Bog Lemming
  Syncerus Hodgson, 1847 -- valid
  Syncerus caffer (Sparrman, 1779) -- valid -- African buffalo, African Buffalo, Cape buffalo
  Tadarida Rafinesque, 1814 -- valid -- guano bats
  Tadarida brasiliensis (I. Geoffroy, 1824) -- valid -- Brazilian free-tailed bat, Brazilian Free-tailed Bat, Mexican Free-tailed Bat, Murciélago-cola suelta brasileño
  Talpidae G. Fischer, 1814 -- valid -- desmans, moles, shrew-moles
  Talpinae G. Fischer, 1814 -- valid -- moles
  Tamandua Gray, 1825 -- valid -- tamandua
  Tamandua mexicana (Saussure, 1860) -- valid -- Northern Tamandua
  Tamandua tetradactyla (Linnaeus, 1758) -- valid -- Southern Tamandua
  Tamias Illiger, 1811 -- valid -- Chipmunks
  Tamias alpinus Merriam, 1893 -- valid -- Alpine Chipmunk
  Tamias amoenus J. A. Allen, 1890 -- valid -- Yellow-pine Chipmunk
  Tamias canipes (V. Bailey, 1902) -- valid -- Gray-footed Chipmunk
  Tamias cinereicollis J. A. Allen, 1890 -- valid -- Gray-collared Chipmunk
  Tamias dorsalis Baird, 1855 -- valid -- Cliff Chipmunk
  Tamias merriami J. A. Allen, 1889 -- valid -- Merriam's Chipmunk
  Tamias minimus Bachman, 1839 -- valid -- Least Chipmunk, tamia mineur
  Tamias obscurus J. A. Allen, 1890 -- valid -- California Chipmunk, Dusky Chipmunk
  Tamias ochrogenys (Merriam, 1897) -- valid -- Redwood Chipmunk, Yellow-cheeked Chipmunk
  Tamias palmeri (Merriam, 1897) -- valid -- Palmer's Chipmunk
  Tamias panamintinus Merriam, 1893 -- valid -- Panamint Chipmunk
  Tamias quadrimaculatus Gray, 1867 -- valid -- Long-eared Chipmunk
  Tamias quadrivittatus (Say, 1823) -- valid -- Colorado Chipmunk
  Tamias ruficaudus (A. H. Howell, 1920) -- valid -- Red-tailed Chipmunk
  Tamias rufus (Hoffmeister and Ellis, 1979) -- valid -- Hopi Chipmunk
  Tamias senex J. A. Allen, 1890 -- valid -- Allen's Chipmunk, Shadow Chipmunk
  Tamias siskiyou (A. H. Howell, 1922) -- valid -- Siskiyou Chipmunk
  Tamias sonomae (Grinnell, 1915) -- valid -- Sonoma Chipmunk
  Tamias speciosus Merriam, 1890 -- valid -- Lodgepole Chipmunk
  Tamias striatus (Linnaeus, 1758) -- valid -- Eastern Chipmunk, tamia rayé
  Tamias townsendii Bachman, 1839 -- valid -- Townsend's Chipmunk
  Tamias umbrinus J. A. Allen, 1890 -- valid -- Uinta Chipmunk
  Tamiasciurus Trouessart, 1880 -- valid -- chickarees, Red Squirrels
  Tamiasciurus douglasii (Bachman, 1839) -- valid -- Douglas's Squirrel
  Tamiasciurus hudsonicus (Erxleben, 1777) -- valid -- écureuil roux, Red Squirrel
  Tamiasciurus hudsonicus grahamensis (J. A. Allen, 1894) -- valid -- Mount Graham red squirrel
  Tamiasciurus hudsonicus hudsonicus (Erxleben, 1777) -- valid
  Tasmacetus Oliver, 1937 -- valid -- Tasmanian beaked whales
  Tasmacetus shepherdi Oliver, 1937 -- valid -- Shepherd's Beaked Whale, Tasman beaked whale, Tasmanian beaked whale
  Taxidea Waterhouse, 1839 -- valid -- American badgers
  Taxidea taxus (Schreber, 1777) -- valid -- American Badger, badger, Tlalcoyote
  Taxidiinae Pocock, 1920 -- invalid -- badgers
  Tayassu G. Fischer [von Waldheim], 1814 -- valid -- peccaries
  Tayassu pecari (Link, 1795) -- valid -- Pecari labios blancos, white-lipped peccary, White-lipped Peccary
  Tayassu tajacu (Linnaeus, 1758) -- invalid -- collared peccary, Pecari de collar
  Tayassuidae Palmer, 1897 -- valid -- peccaries
  Theria Parker and Haswell, 1897 -- valid
  Thomomys Wied-Neuwied, 1839 -- valid -- Smooth-toothed Pocket Gophers, Western Pocket Gophers
  Thomomys bottae (Eydoux and Gervais, 1836) -- valid -- Botta's Pocket Gopher, Tuza de Botta
  Thomomys bulbivorus (Richardson, 1829) -- valid -- Camas Pocket Gopher
  Thomomys clusius Coues, 1875 -- valid -- Wyoming Pocket Gopher
  Thomomys idahoensis Merriam, 1901 -- valid -- Idaho Pocket Gopher
  Thomomys mazama Merriam, 1897 -- valid -- Western Pocket Gopher
  Thomomys monticola J. A. Allen, 1893 -- valid -- Mountain Pocket Gopher
  Thomomys talpoides (Richardson, 1828) -- valid -- Northern Pocket Gopher
  Thomomys townsendii (Bachman, 1839) -- valid -- Townsend's Pocket Gopher
  Thomomys umbrinus (Richardson, 1829) -- valid -- Southern Pocket Gopher, Tuza mexicana
  Thylamys Gray, 1843 -- valid
  Thylamys elegans (Waterhouse, 1839) -- valid -- Elegant Fat-tailed Mouse Opossum
  Thylamys macrura (Olfers, 1818) -- invalid
  Thylamys pallidior (Thomas, 1902) -- valid -- White-bellied Fat-tailed Mouse Opossum
  Thylamys pusilla (Desmarest, 1804) -- invalid
  Thylamys velutinus (Wagner, 1842) -- valid -- Dwarf Fat-tailed Mouse Opossum
  Tolypeutes Illiger, 1811 -- valid -- Three-banded Armadillos
  Tolypeutes matacus (Desmarest, 1804) -- valid -- Southern Three-banded Armadillo
  Tolypeutes tricinctus (Linnaeus, 1758) -- valid -- Brazilian Three-banded Armadillo
  Trichechidae Gill, 1872 -- valid -- manatees
  Trichechus Linnaeus, 1758 -- valid -- manatees
  Trichechus inunguis (Natterer, 1883) -- valid -- Amazon manatee, Amazonian Manatee
  Trichechus manatus Linnaeus, 1758 -- valid -- Caribbean manatee, manatee, Manatí del Caribe, West Indian Manatee
  Trichechus senegalensis Link, 1795 -- valid -- African Manatee, West African manatee
  Tubulidentata Huxley, 1872 -- valid -- aardvarks
  Tursiops Gervais, 1855 -- valid -- bottlenose dolphins
  Tursiops gillii Dall, 1873 -- invalid
  Tursiops truncatus (Montagu, 1821) -- valid -- Bottlenose Dolphin, Bottlenosed Dolphin, Delfín tonina
  Uncia Gray, 1854 -- valid
  Uncia uncia (Schreber, 1775) -- valid -- Snow leopard
  Urocyon Baird, 1857 -- valid -- gray foxes
  Urocyon cinereoargenteus (Schreber, 1775) -- valid -- Common Gray Fox, Gray Fox, renard gris, Zorra gris
  Urocyon littoralis (Baird, 1858) -- valid -- Channel Islands Gray Fox, Island Fox, Island Gray Fox
  Ursidae Fischer de Waldheim, 1817 -- valid -- bears
  Ursinae Fischer de Waldheim, 1817 -- invalid
  Ursus Linnaeus, 1758 -- valid -- bears
  Ursus americanus Pallas, 1780 -- valid -- American Black Bear, black bear, Oso negro, ours noir
  Ursus americanus americanus Pallas, 1780 -- valid -- American black bear
  Ursus americanus luteolus Griffith, 1821 -- valid -- Louisiana black bear
  Ursus arctos Linnaeus, 1758 -- valid -- Brown Bear, Grizzly Bear, Oso pardo
  Ursus arctos arctos Linnaeus, 1758 -- valid -- brown bear
  Ursus arctos horribilis Ord, 1815 -- valid -- brown bear, grizzly bear
  Ursus arctos nelsoni Merriam, 1914 -- invalid -- Mexican grizzly bear
  Ursus arctos pruinosus Blyth, 1854 -- valid -- brown bear
  Ursus luteolus Griffith, 1821 -- invalid
  Ursus maritimus Phipps, 1774 -- valid -- ours blanc, Polar Bear
  Vespertilionidae Gray, 1821 -- valid -- vespertilionid bats
  Vespertilioninae Gray, 1821 -- valid
  Vulpes Frisch, 1775 -- valid -- kit foxes, red foxes
  Vulpes fulvus (Desmarest, 1820) -- invalid
  Vulpes macrotis Merriam, 1888 -- valid -- Kit Fox
  Vulpes macrotis macrotis Merriam, 1888 -- invalid
  Vulpes macrotis mutica Merriam, 1902 -- invalid -- San Joaquin kit fox
  Vulpes muticus Merriam, 1902 -- invalid
  Vulpes velox (Say, 1823) -- valid -- Swift Fox, Zorra desértica
  Vulpes velox hebes Merriam, 1902 -- invalid -- northern swift fox
  Vulpes velox mutica Merriam, 1902 -- invalid -- San Joaquin kit fox
  Vulpes velox velox (Say, 1823) -- invalid -- swift fox
  Vulpes vulpes (Linnaeus, 1758) -- valid -- Red Fox, renard roux
  Xenarthra Cope, 1889 -- invalid -- edentates, preguiça, tamanduá, tatu
  Zaedyus Ameghino, 1889 -- valid -- pichis
  Zaedyus pichiy (Desmarest, 1804) -- valid -- Pichi
  Zaglossus Gill, 1877 -- valid -- long-nosed echidna
  Zalophus Gill, 1866 -- valid -- California sea lions
  Zalophus californianus (Lesson, 1828) -- valid -- California sea lion, California Sealion, Lobo-marino californiano
  Zapodidae Coues, 1875 -- invalid
  Zapodinae Coues, 1875 -- valid -- jumping mice
  Zapus Coues, 1875 -- valid -- Jumping Mice
  Zapus hudsonius (Zimmermann, 1780) -- valid -- Meadow Jumping Mouse, souris sauteuse des champs
  Zapus princeps J. A. Allen, 1893 -- valid -- Western Jumping Mouse
  Zapus trinotatus Rhoads, 1895 -- valid -- Pacific Jumping Mouse
  Ziphiidae Gray, 1850 -- invalid -- beaked whales
  Ziphius G. Cuvier, 1823 -- valid -- goose-beaked whales
  Ziphius cavirostris G. Cuvier, 1823 -- valid -- Ballena-picuda de Couvier, Cuvier's Beaked Whale, goose-beaked whale, goosebeak whale
   

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