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159 hydrobiid mud snails species
Pyrgulopsis thermalis
Marstonia halcyon
Pyrgulopsis amargosae
Pyrgulopsis longinqua
Pyrgulopsis neomexicana
Pyrgulopsis stearnsiana
Pyrgulopsis deaconi
Pyrgulopsis turbatrix
Cincinnatia integra
Pyrgulopsis aardahli
Pyrgulopsis archimedis
Floridobia alexander
Floridobia floridana
Floridobia fraterna
Floridobia leptospira
Floridobia petrifons
Notogillia sathon
Notogillia wetherbyi
Probythinella emarginata
Pyrgulopsis anguina
Pyrgulopsis arizonae
Pyrgulopsis bedfordensis
Pyrgulopsis carinifera
Pyrgulopsis chamberlini
Pyrgulopsis coloradensis
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