| details |
Chesterian |
|
Canada(Alberta) |
Staplin,F.L. Upper Mississippian plant spores from the Golata Formation, Alberta, Canada. |
1960 |
| details |
Mississippian |
|
USA |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 2 |
1958 |
| details |
Namurian A |
|
Scotland(Fife) |
Butterworth,M.A. et al. The small spore floras of coals in the Limestone Coal Group and Upper Limestone Group of the Lower Carboniferous of Scotland |
1958 |
| details |
Late Mississippian |
|
Alabama |
Hoffmeister,W.S. et al. Geologic range of Paleozoic plant spores in North America |
1955 |
| original |
Chesterian |
|
Kentucky |
Hoffmeister,W.S. et al. Mississippian plant spores from the Hardinsburg Formation of Illinois and Kentucky. |
1955 |
| original |
Chesterian |
|
Illinois |
Hoffmeister,W.S. et al. Mississippian plant spores from the Hardinsburg Formation of Illinois and Kentucky. |
1955 |