	Authors	Year	Title
	Bisat, Duncan & Moore	1931	On the occurence of a British Coal Measures goniatite in Missouri, U.S.A. Proceedings of the Yorkshire Geological Society, 22 (1): 1-8, fig.1-5, pl.1;
	Kant	1975	Biometrische Untersuchungen an Ammonoideen-Gehäusen. Paläontologische Zeitschrift: 203-220, 19 fig., Stuttgart.
	Kant & Kullmann	1978	Gehäuse-Allometrie bei Cephalopoden. Neues Jahrbuch für Geologie und Paläontologie , Abhandlungen, 157 (1-2): 98-103, 4 fig., Stuttgart.
	Manger, Meeks & Stephen	1999	Pathologic Gigantism in Middle Carboniferous Cephalopods, Southern Midcontinent, United States. In: Olóriz,F. & Rodríguez-Tovar,F.J.[eds.], Advancing Research on Living and Fossil Cephalopods, 77-89, 5 figs., New York.
	Mapes	1976	An Unusually Large Pennsylvanian Ammonoid from Oklahoma. Oklahoma Geological Notes, 36 (2): 47-51, fig.1-2; Norman.
	Miller & Owen	1939	An ammonoid fauna from the Lower Pennsylvanian Cherokee formation of Missouri. Journal of Paleontology, 13: 141-162, fig.1-9, pl.17-20; Tulsa, Oklahoma.
	Miller & Unklesbay	1943	The siphuncle in Late Paleozoic amonoids. Journal of Paleontology, 17 (1): 1-25, fig.1-9, pl.1-5; Tulsa,Oklahoma.
	Plummer & Scott	1937	Upper Paleozoic ammonites in Texas. The geology of Texas, vol.3 pt.1, Bull. Texas. Univ., 3701: 1-516, fig.1-88, pl.1-41; Austin, Texas.
	Smith	1903	The Carboniferous Ammonoids of America. Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.
	Unklesbay	1962	Pennsylvanian Cephalopods of Oklahoma. Bulletin of the Oklahoma Geological Survey, 96: 1-150, fig.1-16, tab.1-2, pl.1-19; Norman.