original |
Late Westphalian B |
Early Westphalian C |
Oklahoma |
Dempsey,J.E. Sporomorphs from Lower and Upper Mcalester Coals (Pennsylvanian) of Oklahoma |
1967 |
details |
Late Westphalian B |
Early Westphalian C |
Arkansas |
Dempsey,J.E. Sporomorphs from Lower and Upper Mcalester Coals (Pennsylvanian) of Oklahoma |
1967 |
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 |
Arkansas |
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 |
Texas |
Kirkland,D.W. et al. Cordaitina pollen from Pennsylvanian strata of Oklahoma |
1970 |
details |
Desmoinesian |
Missourian |
Oklahoma |
Kirkland,D.W. et al. Cordaitina pollen from Pennsylvanian strata of Oklahoma |
1970 |