| original |
Middle Albian |
|
Oklahoma |
Srivastava,S.K. Microspores from the Fredericksburgh Group (Albian) of the southern United States. |
1975 |
| details |
Middle Albian |
|
Texas |
Srivastava,S.K. Stratigraphic ranges of selected spores and pollen from the Fredericksburg Group, (Albian), of the southern United States. |
1981 |
| details |
Middle Albian |
|
Oklahoma |
Srivastava,S.K. Stratigraphic ranges of selected spores and pollen from the Fredericksburg Group, (Albian), of the southern United States. |
1981 |
| details |
Albian |
Cenomanian |
Tanzania |
Srivastava,V. A Middle Cretaceous microfloral assemblage from Southern Coastal Tanzania |
1994 |
| details |
Albian |
Cenomanian |
Tanzania |
Srivastava,V. et al. Albian - Cenomanian microfloral assemblages from coastal Tanzania. |
1999 |