Taxonomic Hierarchy
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| Kingdom | Animalia
– Animal, animaux, animals |
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| Subkingdom | Bilateria
– triploblasts |
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| Infrakingdom | Deuterostomia
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| Phylum | Chordata
– cordés, cordado, chordates |
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| Subphylum | Vertebrata
– vertebrado, vertébrés, vertebrates |
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| Infraphylum | Gnathostomata
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| Superclass | Tetrapoda
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| Class | Reptilia Laurenti, 1768
– répteis, reptiles, Reptiles |
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| Order | Squamata Oppel, 1811
– Amphisbaenians, Lizards, Snakes, amphisbènes, lézards, serpents |
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| Suborder | Serpentes Linnaeus, 1758
– Snakes, cobra, serpente, serpents |
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| Infraorder | Alethinophidia Nopcsa, 1923
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| Family | Viperidae Oppel, 1811
– Pit Vipers, Vipers |
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| Subfamily | Crotalinae Oppel, 1811
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| Genus | Porthidium Cope, 1871 |
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Direct Children: |
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| Species | Porthidium arcosae Schätti and Kramer, 1993
– Manabi Hognose Pitviper | |
| Species | Porthidium dunni (Hartweg and Oliver, 1938)
– Nauyaca-nariz de cerdo oxaqueña, Dunn's Hognose Viper | |
| Species | Porthidium hespere (Campbell, 1976)
– Nauyaca-nariz de cerdo de Tecomán, Western Hognose Viper | |
| Species | Porthidium lansbergii (Schlegel, 1841)
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| Species | Porthidium nasutum (Bocourt, 1868)
– Nauyaca-nariz de cerdo narigona, Hognosed Pit Viper | |
| Species | Porthidium ophryomegas (Bocourt, 1868)
– Slender Hognose Viper | |
| Species | Porthidium porrasi Lamar, 2003
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| Species | Porthidium volcanicum Solórzano, 1995
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| Species | Porthidium yucatanicum (H. M. Smith, 1941)
– Nauyaca-nariz de cerdo yucateca | |
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