Anculopsis Yen, 1947 † (original description)
Anculopsis bicarinata Yen, 1947 † (original description)
Anculopsis houghterlingi Yen, 1947 † (original description)
Fluminicola yatesiana (J. G. Cooper, 1894) † accepted as Pyrgulopsis yatesiana (J. G. Cooper, 1894) † (basis of record)
Fluminicola yatesiana utahensis Yen, 1947 † accepted as Pyrgulopsis nanna (Chamberlin & E. G. Berry, 1933) † (original description)
Gyraulus annectans Chamberlin & E. G. Berry, 1933 † accepted as Idahoella monocarinata (Chamberlin & E. G. Berry, 1933) † (additional source)
Idahoella monocarinata (Chamberlin & E. G. Berry, 1933) † (additional source)
Lioplax utahensis Yen, 1947 † accepted as Anculopsis utahensis (Yen, 1947) † (original description)
Payettia micra Yen, 1947 † (original description)
Pilsbryus antiquus utahensis Yen, 1947 † accepted as Pilsbryus occidentalis utahensis Yen, 1947 † (original description)
Pliopholyx reesidei Yen, 1947 † (original description)
Pompholopsis minima Yen, 1947 † accepted as Vorticifex minimus (Yen, 1947) † (original description)
Pompholopsis planospiralis Yen, 1947 † accepted as Vorticifex utahensis (Yen, 1947) † (original description)
Pompholopsis utahensis Yen, 1947 † accepted as Vorticifex utahensis (Yen, 1947) † (original description)
Sphaerium rugosum Meek, 1870 † (additional source)
Valvata incerta Yen, 1947 † (original description)