Authors Year Title
Furnish & Saunders 1971 Ammonoids from the Middle Chester Beech Creek Limestone, St. Clair County.
University of Kansas paleontological Contributions, 51: 1-14, fig.1-3, pl.1-2.
Gordon 1965 Carboniferous Cephalopods of Arkansas.
Professional Papers, U.S. Geological Survey, 460: 1-322, fig.1-96, pl.1-32; Washington. [imprint 1964].
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 & Gurley 1896 New species of Palaeozoic invertebrates from Illinois and other states.
Bulletin of the Illinois State Museum of Natural History, 11: 1-50, pl.1-5; Springfield, IL.
Miller & Furnish 1940a Studies on Carboniferous ammonoids: parts 1-4.
Journal of Paleontology, 14: 356-377, fig.1-17, pl.45-49; Tulsa, Okla.
Smith 1903 The Carboniferous Ammonoids of America.
Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.