Authors Year Title
Miller & Furnish 1940b Studies of Carboniferous ammonoids: parts 5-7.
Journal of Paleontology, 14 (6): 521-543, fig.1-7, pl.62-65; Tulsa, Okla.
Miller & Unklesbay 1942 The cephalopod fauna of the Conemaugh Series in Western Pennsylvania.
Annals of the Carnegie Museum, 29: 127-174, fig.1-5, pl.1-8; Pittsburgh, Pa.
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 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.
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.