| original |
Precambriam |
Recent |
Texas |
Leffingwell,H.A. A study of the variation of the microfossil assemblages within the Vicksburg Formation, Texas. |
1958 |
| original |
Devonian |
|
Oklahoma |
Urban,J.B. Microfossils of the Woodford Shale (Devonian) of Oklahoma. |
1960 |
| original |
Early Oligocene |
Middle Oligocene |
China(Hopei) |
Jiabo On the Paleogene dinoflagellates and acritarchs from the Coastal Region of Bohai. |
1978 |
| original |
Miocene |
|
Brazil |
Arai,M. Dinoflagellate fossils;their use in the reconstruction of the geolocial history of Brasilian Atlantic Coast. |
1985 |
| original |
Miocene |
|
Brazil(Amapa) |
Arai,M. Dinoflagellate fossils;their use in the reconstruction of the geolocial history of Brasilian Atlantic Coast. |
1985 |