	Authors	Year	Title
	Doguzhaeva, Mapes & Mutvei	1997	Beaks and radulae of Early Carboniferous goniatites. Lethaia 30: 305-313, 6 figs., Oslo.
	Girty	1911	The fauna of the Moorefield Shale of Arkansas. Bulletin, U.S. Geological Survey, 439: 1-148, pl.1-15; Washington.
	Gordon	1965	Carboniferous Cephalopods of Arkansas. Professional Papers, U.S. Geological Survey, 460: 1-322, fig.1-96, pl.1-32; Washington. [imprint 1964].
	Mapes	1987	Upper Paleozoic cephalopod mandibles: frequency of occurrence, modes of preservation, and paleoecological implications. Journal of Paleontology, 61 (3): 521-538, fig.1-3, tab.1-2; Lawrence, Kansas.
	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.
	Miller & Faber	1892	Description of some Subcarboniferous and Carboniferous Cephalopoda. Journal of the Cincinnati Society of natural history, 14: 164-168, pl.6;
	Miller & Furnish	1940a	Studies on Carboniferous ammonoids: parts 1-4. Journal of Paleontology, 14: 356-377, fig.1-17, pl.45-49; Tulsa, Okla.
	Miller & Youngquist	1948	The cephalopod fauna of the Mississippian Barnett Formation of Central Texas. Journal of Paleontology, 22: 649-671, fig.1-3, pl.94-100; Tulsa, Okla.
	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.
	Schmidt	1929	Tierische Leitfossilien des Karbon. Gürich,G.: Leitfossilien, 6. Lief.: 1-107, pl.1-23; Berlin (Borntraeger).
	Smith	1903	The Carboniferous Ammonoids of America. Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.