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Genus	Species
Antrorbis	2
Aphaostracon	1
Aroapyrgus	2
Balconorbis	2
Carinulorbis	0
Chorrobius	1
Coahuilix	0
Cochliopa	1
Cochliopina	1
Durangonella	0
Dyris	0
Emmericiella	0
Eremopyrgus	1
Eupaludestrina	7
Heleobia	122
Heleobops	3
Ipnobius	1
Juturnia	3
Lithococcus	1
Littoridina	0
Littoridinops	4
Mesobia	0
Mexipyrgus	2
Mexithauma	1
Minckleyella	1
Onobops	1
Phreatoceras	1
Pseudotryonia	4
Pyrgophorus	4
Semisalsa	3
Sioliella	0
Spurwinkia	1
Stygopyrgus	3
Texadina	0
Texapyrgus	2
Trichonia	1
Tryonia	35
Vitropyrgus	1
Zetekina	1