Case, G.R. (1987)
A new selachian fauna from the Late Campanian of Wyoming (Teapot Sandstone Member, Mesaverde Formation, Big Horn Basin). Palaeontographica, Abt. A, 197(1–3), 1–37

Cook, T.D. & Brown, E. & Ralrick, P.E. & Konishi, T. (2017)
A late Campanian Euselachian Assemblage from the Bearpaw Formation of Alberta, Canada: Some Notable Range Extensions. Canadian Journal of Earth Sciences, 54(9), 973–980
DOI: 10.1139/cjes-2016-0233