| original |
Desmoinesian |
|
Iowa |
Wilson,L.R. et al. Descriptions of some unassigned plant microfossils from the Des Moines Series of Iowa. |
1940 |
| details |
Pennsylvanian |
|
Ohio |
Kosanke,R.M. A microfossil Profile of certain Pennsylvanian Coals of Ohio |
1943 |
| details |
Late Conemaugh |
Early Monongahela |
Ohio |
Kosanke,R.M. The characteristic plant microfossils of the Pittsburgh and Pomeroy Coals of Ohio. |
1943 |
| details |
Desmoinesian |
|
Iowa |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| original |
Late Pottsville |
|
West Virginia |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| original |
Late Pottsville |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Middle Pennsylvanian |
Late Pennsylvanian |
Illinois |
Kosanke,R.M. Pennsylvanian spores of Illinois and their use in correlation. |
1950 |
| details |
Paleozoic |
|
Nd |
Knox,E.M. The spores of Lycopodium, Phylloglossum, Selaginella and Isoetes and their value in the study of microfossils of Paleozoic age. |
1950 |
| details |
Desmoinesian |
|
Iowa |
Schemel,M.P. Small spores of the Mystic Coal of Iowa. |
1951 |
| details |
Early Westphalian D |
|
W.Germany(N.Rhine) |
Bharadwaj,D.C. et al. The spore content of the Beds of Velen, Ruhr Carboniferous. |
1955 |
| details |
Westphalian D |
|
Germany(Rhineland) |
Bharadwaj,D.C. et al. The spore content of the Velener Layers of the Ruhr Coal Measures. |
1955 |
| details |
Westphalian |
Stephanian |
France |
Alpern,B. Succinct descriptions of the principal genera and species of pollen and spores found in the Coals of Central and eastern France. |
1956 |
| details |
Late Westphalian B |
Early Westphalian C |
W.Germany(N.Rhine) |
Potonie,R. et al. The spore dispersae of the Rhur Carboniferous, their morphography and stratigraphy with reviews of species of other areas.Part 2 |
1956 |
| details |
Desmoinesian |
|
Oklahoma |
Wilson,L.R. et al. Plant microfossils of the Croweburg Coal. |
1956 |
| details |
Early Westphalian D |
|
Germany(Rhineland) |
Bharadwaj,D.C. The spore flora of Velener Schichten (Lower Westphalian D) in the Ruhr Coal Measures. |
1957 |
| details |
Late Stephanian |
|
France(Aveyron) |
Doubinger,J. The microspores of the Decazeville Basin (Aveyron) |
1958 |
| details |
Late Westphalian |
Desmoinesian |
Iowa |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 2 |
1958 |