	Authors	Year	Title
	Clardy	1962	Goniatite cephalopod faunas from the Hale Formation. Compass 39 (3): 103-109, 1fig., 1tab., pl.1-2;
	Manger & Saunders	1980	Lower Pennsylvanian (Morrowan) ammonoids from the North American midcontinent. Journal of Paleontology, 54, Suppl.(3): 1-56, fig.1-21, pl.1-6, tab.1-10; Tulsa, Okla.
	Manger, Stephen & Meeks	1999	Possible Cephalopod Reproductive Mass Mortality Reflected by Middle Carboniferous Assemblages, Arkansas, Southern United States. In: Olóriz,F. & Rodríguez-Tovar,F.J.[eds.], Advancing Research on Living and Fossil Cephalopods,345-364, 8 figs., New York.
	McCaleb, Quinn & Furnish	1964	The ammonoid family Girtyoceratidae in the Southern Midcontinent. Circular Oklahoma geological Survey, 67: 1-41, 8 figs., pl.1-4; Norman, Okla.
	Quinn, McCaleb & Webb	1962	A Pennsylvanian Eumorphoceras from Arkansas. Journal of Paleontology, 36: 112-114, pl.21; Tulsa, Okla.
	Ruzhencev & Bogoslovskaya	1978	Namyurskiy etap v evolyutsii ammonodey. Pozdnenamyurskiye ammonoidei. Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 167: 1-336, fig.1-108, pl.1-44; Moskva.
	Saunders, Manger & Gordon	1977	Upper Mississippian and lower and middle Pennsylvanian ammonoid biostratigraphy of Northern Arkansas. Oklahoma Geolological Survey Guidebook 18: 117-137, fig.1-2, tab.1-2, pl.1-6.
	Stephen, Manger & Baker	2002	Ontogeny and heterochrony in the Middle Carboniferous ammonoid Arkanites relictus (Quinn, McCaleb, and Webb) from northern Arkansas. Journal of Paleontology, 76: 810-821, 11 fig., Lawrence, KS.
	Stephen, Manger & Baker	2002	Ontogeny and heterochrony in the Middle Carboniferous ammonoid Arkanites relictus (Quinn, McCaleb, and Webb) from northern Arkansas. Journal of Paleontology, 76: 810-821, 11 fig., Lawrence, KS.
	Tanabe, Landman & Mapes	1994	Early shell features of some late Paleozoic ammonoids and their systematic implications. Transactions and Proceedings of the Palaeontological Society of Japan, n.ser., 173: 384-400, 8 figs.