original description
Wanner, H.E. (1921). Some faunal remains from the Trias of York County, Pennsylvania. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 73(1): 25-37., available online at https://biodiversitylibrary.org/page/1650615
page(s): 32 (footnote) [details]
From editor or global species database
Type species Modell (1957) invalidly designated Unio browni Whitfield, 1903 as type species, although Pilsbry (1921, footnote on p. 32) had clearly designated Unio percorrugata Whitfield, 1903 as the type. [details]