original description
Whiteaves, J.F. (1885). Report on the Invertebrata of the Laramie and Cretaceous rocks of the vicinity of the Bow and Belly Rivers and adjacent localities in the North-West Territory. <em>Contributions to Canadian palaeontology.</em> 1(1): 1-89., available online at https://www.biodiversitylibrary.org/page/38502645
page(s): 18, pl. 2, figs 6-6b [details]
From editor or global species database
Type locality "Pincher Creek", Alberta, Canada [details]