	Authors	Year	Title
	Miller & Furnish	1940b	Studies of Carboniferous ammonoids: parts 5-7. Journal of Paleontology, 14 (6): 521-543, fig.1-7, pl.62-65; Tulsa, Okla.
	Work & Mapes	2009	New occurrences of the Pennsylvanian index ammonoid Dunbarites from the North American Midcontinent Journal of Paleontology, vol. 83, pp. 405-413