Perotrilites sp.4
- Citations total:
- 2
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| original | Cenomanian | Coniacian | Wyoming | Upshaw,C.F. Palynology of the Frontier Formation, northwestern Wind River Basin, Wyoming. | 1959 |
| original | Early Chesterian | Middle Chesterian | Oklahoma | Harris,R.W. Palynology of the Sand Branch Member of the Caney Shale Formation, (Mississippian), of Southern Oklahoma. | 1971 |