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Authors |
Year |
Title |
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McCaleb & Furnish |
1964 |
The Lower Pennsylvanian ammonoid genus Axinolobus in the Southern Midcontinent.
Journal of Paleontology, 38 (2): 249-255, fig.1-3, pl.40; Tulsa,Oklahoma.
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McCaleb |
1968 |
Lower Pennsylvanian Ammonoids from the Bloyd Formation of Arkansas and Oklahoma.
Special Paper of the geological Society of America, 96: 1-123, fig.1-27, pl.1-12; Boulder,Colorado.
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Quinn |
1962a |
Age of the Union Valley Sandstone.
Oklahoma Geology Notes, 22: 116-120, 2 figs., Norman, OK.
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Quinn |
1962b |
Note on Age of Union Valley Cephalopod Fauna.
Oklahoma Geology Notes, 22 (11): 304, Norman, OK.
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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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