MolluscaBase source details
Unio corbiculoides Whitfield, 1907 † accepted as Proparreysia corbiculoides (Whitfield, 1907) † (original description)
Unio cylindricoides Whitfield, 1907 † accepted as Quadrula cylindricoides (Whitfield, 1907) † (original description)
Unio gibbosoides Whitfield, 1907 † accepted as Plesielliptio stantoni (C. A. White, 1907) † (original description)
Unio letsoni Whitfield, 1907 † accepted as Proparreysia letsoni (Whitfield, 1907) † (original description)
Unio pyramidatoides Whitfield, 1907 † accepted as Proparreysia pyramidatoides (Whitfield, 1907) † (original description)
Unio pyramidellus Whitfield, 1907 † accepted as Proparreysia pyramidella (Whitfield, 1907) † (original description)
Unio subtrigonalis Whitfield, 1907 † accepted as Callonaia subtrigonalis (Whitfield, 1907) † (original description)
Montana for Unio corbiculoides Whitfield, 1907 †
Montana for Unio cylindricoides Whitfield, 1907 †
Montana for Unio gibbosoides Whitfield, 1907 †
Montana for Unio letsoni Whitfield, 1907 †
Montana for Unio pyramidatoides Whitfield, 1907 †
Montana for Unio pyramidellus Whitfield, 1907 †
Montana for Unio subtrigonalis Whitfield, 1907 †
Holotype AMNH 26295, identified as Unio biesopoides Whitfield, 1907
Holotype AMNH 26296, identified as Unio pyramidatoides Whitfield, 1907
Holotype AMNH 26297, identified as Unio pyramidellus Whitfield, 1907
Holotype AMNH 26299, identified as Unio letsoni Whitfield, 1907
Holotype AMNH 26300, identified as Unio corbiculoides Whitfield, 1907
Holotype AMNH 962, identified as Unio gibbosoides Whitfield, 1907
"130 miles northwest of Miles City, Montana, 180 feet above Pierre shales", USA; Laramie Fm., Maastrichtian, Late ... [details]
"130 miles northwest of Miles City, Montana, 80 feet above Pierre shales", USA; Laramie Fm., Maastrichtian, Late ... [details]
"130 miles northwest of Miles City, Montana, 180 feet above Pierre shales", USA; Laramie Fm., Maastrichtian, Late ... [details]
"In Laramy Clay, about 120 feet about Pierre shales, on Snow Creek, on the Missouri River, in Montana", USA; Laramie ... [details]
"180 feet above Pierre shales, 130 miles northwest of Miles City, Montana", USA; Laramie Fm., Maastrichtian, Late ... [details]
"130 miles northwest of Miles City, Montana, 180 feet above Pierre shales", USA; Laramie Fm., Maastrichtian, Late ... [details]
"130 miles northwest of Miles City, Montana, 80 feet above Fort Pierre shales", USA; Laramie Fm., Maastrichtian, ... [details]
"130 miles northwest of Miles City, Montana, 80 feet above Pierre shales", USA; Laramie Fm., Maastrichtian, Late ... [details]
