original description
Popenoe W.P., Saul L.R., Susuki T. (1987). Gyrodiform gastropods from the Pacific coast Cretaceous and Paleocene. <em>Journal of Paleontology.</em> 61: 70-100.
page(s): 87, figs. 6.17, 6.18, 6.22, 6.23, 6.27, 6.28, 6.32 [details] Available for editors [request]
From editor or global species database
Fossil range Late Cretaceous, Late Campanian to Early Maastrichtian [details]