Taxonomic Hierarchy
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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 | Hydrobiidae Stimpson, 1865
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| Genus | Fontigens Pilsbry, 1933 |
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Direct Children: |
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| Species | Fontigens aldrichi (Call and Beecher, 1886)
– Hoosier Amnicola, Hoosier Springsnail | |
| Species | Fontigens antroecetes (Hubricht, 1972)
– Missouri Cavesnail | |
| Species | Fontigens bottimeri (Walker, 1925)
– Potomac Springsnail | |
| Species | Fontigens cryptica Hubricht, 1963
– Hidden Springsnail | |
| Species | Fontigens morrisoni Hershler, Holsinger and Hubricht, 1990
– Morrison's Springsnail | |
| Species | Fontigens nickliniana (Lea, 1838)
– Watercress Snail | |
| Species | Fontigens orolibas Hubricht, 1957
– Blue Ridge Springsnail | |
| Species | Fontigens proserpina (Hubricht, 1940)
– Proserpine Cavesnail | |
| Species | Fontigens tartarea Hubricht, 1963
– Organ Cavesnail | |
| Species | Fontigens turritella Hubricht, 1976
– Greenbrier Cavesnail | |
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