Authors Year Title
Gordon 1960 Some American Midcontinent Carboniferous Cephalopods.
Journal of Paleontology 34: 133-151, pls.27,28, 3 text-figs.,Tulsa, OK.
Gordon 1965 Carboniferous Cephalopods of Arkansas.
Professional Papers, U.S. Geological Survey, 460: 1-322, fig.1-96, pl.1-32; Washington. [imprint 1964].
Miller & Furnish 1940a Studies on Carboniferous ammonoids: parts 1-4.
Journal of Paleontology, 14: 356-377, fig.1-17, pl.45-49; 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.
Smith 1903 The Carboniferous Ammonoids of America.
Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.