| details |
Late Pottsville |
|
West Virginia |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Late Pottsville |
|
West Virginia |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Monongahela |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Allegheny |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Late Pottsville |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Late Pottsville |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Late Pennsylvanian |
|
Pennsylvania |
Cross,A.T. The geology of the Pittsburgh Coal: Stratigraphy, petrology, origin and composition, and geologic interpretation of mining problems. |
1952 |
| details |
Late Pennsylvanian |
|
West Virginia |
Cross,A.T. The geology of the Pittsburgh Coal: Stratigraphy, petrology, origin and composition, and geologic interpretation of mining problems. |
1952 |
| details |
Late Pennsylvanian |
|
Ohio |
Cross,A.T. The geology of the Pittsburgh Coal: Stratigraphy, petrology, origin and composition, and geologic interpretation of mining problems. |
1952 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| details |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| details |
Carboniferous |
|
Poland |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Nd |
|
Nd |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Nd |
|
Nd |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Allegheny |
|
USA(Appalachian Bn.) |
Abbott,M.L. Lycopod fructifications from the Upper Freeport (No.7) Coal in southeastern Ohio. |
1963 |