MolluscaBase source details
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Circamelania ortmanni (Stanton, 1903) † (basis of record)
Lymnaea cretacea Yen, 1951 † accepted as Lymnaea tengchieni Kadolsky, 1995 † (original description)
Melampoides Yen, 1951 † (original description)
Melampoides clarkii (C. A. White, 1895) † (basis of record)
Mesochilina Yen, 1951 † (original description)
Mesochilina cretacea Yen, 1951 † (original description)
Mesocochliopa cretacea Yen, 1951 † (original description)
Physa montanensis Yen, 1951 † (original description)
Reesidella lanistoides Yen, 1951 † (original description)
Reesidella montanaensis (Stanton, 1903) † (basis of record)
Rubeyella Yen, 1951 † (original description)
Rubeyella carinata Yen, 1951 † (original description)
Sulcatapex Yen, 1946 † (basis of record)
Zaptychius cylindricus Yen, 1951 † (original description)
Zaptychius tetonensis Yen, 1951 † (original description)
Montana for Physa montanensis Yen, 1951 †
Montana for Rubeyella carinata Yen, 1951 †
Wyoming for Lymnaea cretacea Yen, 1951 †
Wyoming for Mesocochliopa cretacea Yen, 1951 †
Wyoming for Reesidella lanistoides Yen, 1951 †
Wyoming for Zaptychius cylindricus Yen, 1951 †
Wyoming for Zaptychius tetonensis Yen, 1951 †
Holotype USNM 106619, identified as Zaptychius cylindricus Yen, 1951
Holotype USNM 106621, identified as Mesochilina cretacea Yen, 1951
Holotype USNM 106773, identified as Physa montanensis Yen, 1951
Bacon Ridge, Teton County, Wyoming, United States; Cloverly Formation, Aptian to Albian, early Cretaceous [details]
12 miles southeast of Harlowton, Montana, United States [details]
Bacon Ridge, Teton County, Wyoming, United States; Cloverly Formation, Aptian to Albian, early Cretaceous [details]
South of Smooth, Lincoln County, Wyoming, United States; Peterson Limestone, Aptian, early Cretaceous [details]
About 13 miles south of Dillon, in the west branch of Small Horn Canyon, Beaverhead County, Montana, United States; ... [details]
"in the same bed as Zaptychius tetonensis n. sp." (NW1/4 SW1/4 sec. 13, T. 40 N., R. 111 W., Bacon Ridge, Teton ... [details]
NW1/4 SW1/4 sec. 13, T. 40 N., R. 111 W., Bacon Ridge, Teton County, Wyoming, United States; Cloverly Formation, ... [details]
