MolluscaBase taxon details
original description
Speden I.G. (1970). The Type Fox Hills Formation, Cretaceous (Maestrichtian), South Dakota. Part 2. Systematics of the Bivalvia. <em>Peabody Museum of Natural History, Bulletin.</em> 33: 1-222, pls 2-42., available online at https://www.biodiversitylibrary.org/page/10662593
page(s): 104 [details]