original |
Early Eocene |
|
Arkansas |
Jones,E.L. Plant microfossils of the Laminated sediments of the Lower Eocene Wilcox Group in South-Central Arkansas. |
1961 |
original |
Carboniferous |
|
Pennsylvania |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania |
1963 |
original |
Carboniferous |
|
West Virginia |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania |
1963 |
original |
Late Paleocene |
Early Eocene |
Argentina(Salta) |
Quattrocchio,M.E. Preliminary palynological study of the Lumbrera Formation (Salta Group), Pampa Grande locality, Salta Province, Argentina. |
1980 |