	Authors	Year	Title
	Böse	1919	The Permo-Carboniferous ammonoids of the Glass Mountains, west Texas, and their stratigraphical significance. [1919, inscribed 1917]. University of Texas Bulletin, 1762: 1-241, 11 pl., Austin,Texas.
	González-Arreola, Villaseñor-Martínez & Corona-Esquivel	1994	Permian Fauna of the Los Arcos Formation, Municipality of Olinalá, State of Guerrero, Mexico. Revista Mexicana de Ciencias Geológicas, 11: 214-221, 2 text-figs., 3 pls., Mexico.
	Miller & Furnish	1940c	Permian ammonoids of the Guadalupe Mountain Region and adjacent areas. Special Papers of the Geological Society of America, 26: 1-242, fig.1-59, pl.1-44; Baltimore.
	Miller	1945a	Some exceptional Permian ammonoids from West Texas. Journal of Paleontology, 19 (1): 14-21, fig.1-3, pl.6-8; Tulsa,Oklahoma.
	Miller	1945b	A Permian ammonoid from Sonora. Journal of Paleontology, 19 (1): 22, fig.1; Tulsa,Oklahoma.
	Miller	1953	Cephalopoda. In: G.A.Cooper, C.O. Dunbar, H.Duncan, A.K. Miller & B.J.Knight, Permian fauna at El Antimonio, Western Sonora, Mexico. Smithsonian Miscellaneous Coll., 119 (2): 81-82, pl.24D.
	Miller & Furnish	1957c	Ammonoids from the basal Word Formation, Glass Mountains, West Texas. Journal of Paleontology, 31 (6): 1052-1056, fig.1-2; Tulsa,Oklahoma.
	Miller	1965	Cephalopoda. In: Cooper,G.A., Dunbar,C.O., Duncan,H., Miller,A.K. & Knight,B.J.: Fauna pérmica de El Antimonio, Oeste de Sonora, México. Instituto de Geología, Universidad Nacional Autónoma de México, Boletín 58 (3): 89-90, pl.25 D, figs.21-23.
	Nassichuk	1977	Upper Permian ammonoids from the Cache Creek Group in Western Canada. Journal of Paleontology, 51 (3): 557-590, fig.1-20, tab.1-7, pl.1-3; Tulsa, Okla.
	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.