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| Kingdom | Animalia
– Animal, animaux, animals |
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| Subkingdom | Bilateria
– triploblasts |
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| Infrakingdom | Protostomia
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| Superphylum | Spiralia
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| Phylum | Mollusca
– mollusques, molusco, molluscs, mollusks |
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| Class | Gastropoda Cuvier, 1797
– gastropods, slugs, snails, escargots, gastéropodes, limaces, caracol, caramujo, lesma |
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| Subclass | Orthogastropoda
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| Infraclass | Caenogastropoda
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| Order | Littorinida
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| Suborder | Rissoidina
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| Superfamily | Truncatelloidea Gray, 1840
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| Family | Lithoglyphidae Tryon, 1866
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| Genus | Somatogyrus Gill, 1863 |
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Direct Children: |
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| Species | Somatogyrus alcoviensis Krieger, 1972
– Reverse Pebblesnail | |
| Species | Somatogyrus amnicoloides Walker, 1915
– Ouachita pebblesnail | |
| Species | Somatogyrus aureus Tryon, 1865
– Golden Pebblesnail | |
| Species | Somatogyrus biangulatus Walker, 1906
– Angular Pebblesnail | |
| Species | Somatogyrus constrictus Walker, 1904
– Knotty Pebblesnail | |
| Species | Somatogyrus coosaensis Walker, 1904
– Coosa Pebblesnail | |
| Species | Somatogyrus crassilabris Walker, 1915
– Thick-lip Pebblesnail | |
| Species | Somatogyrus crassus Walker, 1904
– Stocky Pebblesnail | |
| Species | Somatogyrus currierianus (Lea, 1863)
– Tennessee Pebblesnail | |
| Species | Somatogyrus decipiens Walker, 1909
– Hidden Pebblesnail | |
| Species | Somatogyrus depressus (Tryon, 1862)
– Sandbar Pebblesnail | |
| Species | Somatogyrus excavatus Walker, 1906
– Ovate Pebblesnail | |
| Species | Somatogyrus georgianus Walker, 1904
– Cherokee Pebblesnail | |
| Species | Somatogyrus hendersoni Walker, 1909
– Fluted Pebblesnail | |
| Species | Somatogyrus hinkleyi Walker, 1904
– Granite Pebblesnail | |
| Species | Somatogyrus humerosus Walker, 1906
– Atlas Pebblesnail | |
| Species | Somatogyrus integra (Say, 1829)
– Ohio Pebblesnail | |
| Species | Somatogyrus nanus Walker, 1904
– Dwarf Pebblesnail | |
| Species | Somatogyrus obtusus Walker, 1904
– Moon Pebblesnail | |
| Species | Somatogyrus parvulus Tryon, 1865
– Sparrow Pebblesnail | |
| Species | Somatogyrus pennsylvanicus Walker, 1904
– Shale Pebblesnail | |
| Species | Somatogyrus pilsbryanus Walker, 1904
– Tallapoosa Pebblesnail | |
| Species | Somatogyrus pumilus (Conrad, 1834)
– Compact Pebblesnail | |
| Species | Somatogyrus pygmaeus Walker, 1909
– Pygmy Pebblesnail | |
| Species | Somatogyrus quadratus Walker, 1906
– Quadrate Pebblesnail | |
| Species | Somatogyrus rheophilus F. G. Thompson, 1984
– Flint Pebblesnail | |
| Species | Somatogyrus rosewateri M. E. Gordon, 1986
– Elk Pebblesnail | |
| Species | Somatogyrus sargenti Pilsbry, 1895
– Mud Pebblesnail | |
| Species | Somatogyrus strengi Pilsbry and Walker, 1906
– Rolling Pebblesnail | |
| Species | Somatogyrus substriatus Walker, 1906
– Choctaw Pebblesnail | |
| Species | Somatogyrus tenax F. G. Thompson, 1969
– Savannah Pebblesnail | |
| Species | Somatogyrus tennesseensis Walker, 1906
– Opaque Pebblesnail | |
| Species | Somatogyrus trothis Doherty, 1878
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| Species | Somatogyrus tryoni Pilsbry and F. C. Baker, 1927
– Coldwater Pebblesnail | |
| Species | Somatogyrus virginicus Walker, 1904
– Panhandle Pebblesnail | |
| Species | Somatogyrus walkerianus Aldrich, 1905
– Gulf Coast Pebblesnail | |
| Species | Somatogyrus wheeleri Walker, 1915
– Channelled Pebblesnail | |
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