Authors	Year	Title
House	1993	Earliest Carboniferous goniatite recovery after the Hangenberg Event. Annales de la Societé géologique de Belgique, 115 (2): 559-579, fig.1-2, pl.1-5; Bruxelles.
Pamenter	1956	Imitoceras from the Exshaw Formation of Alberta. Journal of Paleontology, 30 (4): 965-966, fig.1-2; Tulsa,Oklahoma.
Schindewolf	1959	Adolescent cephalopods from the Exshaw formation of Alberta. Journal of Paleontology, 33: 971-976, fig.1-3, pl.120-121; Tulsa, Oklahoma.