	Authors	Year	Title
	Gordon	1962	Species of Goniatites in the Caney Shale of Oklahoma. Journal of Paleontology, 36: 355-357, fig.1; Tulsa, Okla.
	Manger & Pareyn	1979	New Carboniferous dimorphoceratid ammonoids from Algeria and Arkansas. Journal of Paleontology, 53 (3): 657-665, fig.1-3, pl.1.