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60 lithoglyphidae species
Lithoglyphus naticoides
Fluminicola turbiniformis
Fluminicola virginius
Somatogyrus integer
Lepyrium showalterii
Fluminicola modoci
Somatogyrus pilsbryanus
Somatogyrus tryoni
Fluminicola fremonti
Fluminicola minutissimus
Somatogyrus biangulatus
Somatogyrus constrictus
Fluminicola dalli
Fluminicola seminalis
Somatogyrus trothis
Somatogyrus crassus
Somatogyrus amnicoloides
Clappia umbilicata
Somatogyrus coosaensis
Somatogyrus crassilabris
Somatogyrus currierianus
Somatogyrus decipiens
Somatogyrus excavatus
Gillia altilis
Somatogyrus depressus
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