	Authors	Year	Title
	Furnish & Glenister	1971	Permian Gonioloboceratidae (Ammonoidea). Smithsonian Contributions to Paleontology, 3: 301-312, fig.1-3, pl.1-2; Washington.
	Miller & Unklesbay	1943	The siphuncle in Late Paleozoic amonoids. Journal of Paleontology, 17 (1): 1-25, fig.1-9, pl.1-5; Tulsa,Oklahoma.
	Miller & Downs	1950a	Ammonoids of the Pennsylvanian Finis Shale of Texas. Journal of Paleontology, 24:185-218, 11 text-figs., pl.31-35.
	Miller & Furnish	1957b	Permian ammonoids from Southern Arabia. Journal of Paleontology, 31 (6): 1043-1051, fig.1-6, pl.131-132; Tulsa,Oklahoma.
	Miller & Furnish	1958a	Middle Pennsylvanian Schistoceratidae (Ammonoidea). Journal of Paleontology, 32 (2): 253-268, fig.1-9, pl.33-34; 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.