	Authors	Year	Title
	Miller & Furnish	1958a	Middle Pennsylvanian Schistoceratidae (Ammonoidea). Journal of Paleontology, 32 (2): 253-268, fig.1-9, pl.33-34; Tulsa,Oklahoma.
	Smith	1938	The cephalopod fauna of the Buckhorn Asphalt. The University of Chicago Libraries, 1938: 1-39, pl.1-2; Chicago, Illinois.