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Saunders |
1973 |
Upper Mississippian Ammonoids from Arkansas and Oklahoma.
Special Papers of the Geological Society of America, 145: 1-110, fig.1-32, tab.1-8, pl.1-8; Boulder Colorado.
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Saunders, Manger & Gordon |
1977 |
Upper Mississippian and lower and middle Pennsylvanian ammonoid biostratigraphy of Northern Arkansas.
Oklahoma Geolological Survey Guidebook 18: 117-137, fig.1-2, tab.1-2, pl.1-6.
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