| details |
Pliocene |
Quaternary |
Utah |
Davis,O.K. Palynological evidence for vegetation cycles in a 1.5 million year pollen record from the Great Salt Lake, Utah, USA. |
1998 |
| details |
Pliocene |
Holocene |
Surinam |
Hammen,T.Van Der et al. Late Tertiary and Pleistocene vegetation history; 20my to 20ky. II. 3. South America. (In: Vegetation History. B.Huntley et al, editor) |
1988 |
| details |
Quaternary |
|
Wyoming |
Santucci,V.L. The Yellowstone Paleontological Survey. |
1998 |
| details |
Recent |
|
Texas |
Traverse,A. Organic fluvial sediment; palynomorphs and palynodebris in the Lower Trinity River, Texas. |
1992 |
| details |
Rupelian |
|
Alabama |
Oboh,F.E. et al. Correlation between Sequoia type pollen and Lower Oligocene transgressive deposits in the eastern Gulf Coast. |
1995 |
| details |
Tortonian |
|
Louisiana |
Wrenn,J.H. et al. Palynologic age determination of the Catahoula Formation, Big Creek, Sicily Island, Louisiana. |
2003 |