Early Pennsylvanian ammonoids from southern Nevada.
"Four species of late Morrow age characterize the Diaboloceras peroccidens Zone at the base of the Pennsylvanian sequence in Clark and Nye Counties."
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington,
U.S. Govt. Print. Off.,
1969.
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| Series: | Geological Survey professional paper ;
613-C. Geological Survey professional paper. Contributions to paleontology. |
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