Russell, L.S. (1976). Pelecypods of the Hell Creek Formation (Uppermost Cretaceous) of Garfield County, Montana. Canadian Journal of Earth Sciences. 13: 365-388.
366702
Russell, L.S.
1976
Pelecypods of the Hell Creek Formation (Uppermost Cretaceous) of Garfield County, Montana
Holotype AMNH 30701, identified as Plesielliptio whitfieldi L. S. Russell, 1976 Holotype AMNH 30702, identified as Proparreysia paucinodosa L. S. Russell, 1976 Holotype AMNH 30703, identified as Sphaerium beckmani L. S. Russell, 1976