| details |
Desmoinesian |
Missourian |
Texas |
Gupta,S. Miospores from the Desmoinesian-Missourian boundary Formations of Texas and the age of the Salesville Formation |
1970 |
| details |
Late Westphalian B |
Early Westphalian C |
Oklahoma |
Gupta,S. Miospores from the Desmoinesian-Missourian boundary Formations of Texas and the age of the Salesville Formation |
1970 |
| details |
Desmoinesian |
Missourian |
Oklahoma |
Kirkland,D.W. et al. Cordaitina pollen from Pennsylvanian strata of Oklahoma |
1970 |
| details |
Desmoinesian |
Missourian |
Texas |
Kirkland,D.W. et al. Cordaitina pollen from Pennsylvanian strata of Oklahoma |
1970 |
| details |
Late Westphalian B |
Early Westphalian C |
Arkansas |
Gupta,S. Miospores from the Desmoinesian-Missourian boundary Formations of Texas and the age of the Salesville Formation |
1970 |
| details |
Late Desmoinesian |
|
Texas |
Gupta,S. Miofloral succession and interpretation of the Base of the Permian system in the eastern Shelf of North Central Texas, USA. |
1977 |
| details |
Early Westphalian A |
|
England(Yorkshire) |
McLean,D. Miospore assemblages from the Gastrioceras listeri marine Band and associated Coal Measures Sheffield England. |
1990 |
| details |
Early Westphalian A |
|
North America |
McLean,D. Miospore assemblages from the Gastioceras listeri Marine Band and associated coal measures, Sheffield, England. |
1991 |