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Elias |
1956 |
Upper Mississippian and Lower Pennsylvanian Formations of south-central Oklahoma. In: Petroleum geology of southern Oklahoma. Volume 1.
American Association of Petroleum Geologists, 1956: 56-134, 2 fig., 4 tab., 6 pl.; Tulsa, Okla.
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Gordon |
1965 |
Carboniferous Cephalopods of Arkansas.
Professional Papers, U.S. Geological Survey, 460: 1-322, fig.1-96, pl.1-32; Washington. [imprint 1964].
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