| details |
Early Westphalian A |
|
Arkansas |
Loboziak,S. et al. The microspores of the Hale and Bloyd Formations of northern Arkansas. (In: Biostratigraphy. P.K.Sutherland and W.L.Manger, editors) |
1984 |
| details |
Late Chesterian |
Morrowan |
Arkansas |
Sullivan,H.J. et al. The Mississippian-Pennsylvanian boundary and its correlation with Europe |
1971 |
| details |
Middle Westphalian A |
Early Westphalian B |
Argentina(Catamarca) |
Leyva,F. et al. The stratigraphy of the Middle Carboniferous in the central section of the Sobia-Bodon Structural Unit, (QuirŠ³s, Teverga Coalfield) |
1985 |
| details |
Pottsville |
|
Alabama |
Upshaw,C.F. Pennsylvanian palynology and age relationships in the Warrior Basin, Alabama. |
1967 |