| original |
Oligocene |
|
Canada(British Columbia) |
Arnold,C.A. A Tertiary Azolla from British Columbia. |
1955 |
| details |
Nd |
|
Nd |
Chaloner,W.G. On the megaspores of four species of Lepidostrobus |
1953 |
| details |
Nd |
|
Nd |
Chaloner,W.G. On the megaspores of four species of Lepidostrobus |
1953 |
| details |
Early Gondwana |
|
India(Bihar) |
Trivedi,B.S. Megaspores from Lower Gondwana of Singrauli Coalfield, District Mirzapur. |
1950 |
| original |
Tertiary |
|
New Zealand |
Te Punga,M.T. Fossil spores from New Zealand Coals. |
1949 |
| details |
Early Triassic |
|
Greenland |
Lundblad,B. A Selaginelloid Strobilus from East Greenland (Triassic) |
1948 |
| details |
Westphalian A |
Westphalian C |
Netherlands |
Dijkstra,S.J. et al. A monographic revision of Carboniferous megaspores with special consideration to South Limburg, (Netherlands). |
1946 |
| details |
Early Pennsylvanian |
|
Michigan |
Arnold,C.A. A Heterosporous species of Bowmanites from the Michigan Coal Basin |
1944 |
| details |
Early Pennsylvanian |
|
Michigan |
Arnold,C.A. A Heterosporous species of Bowmanites from the Michigan Coal Basin |
1944 |
| details |
Early Pennsylvanian |
|
Michigan |
Arnold,C.A. A Heterosporous species of Bowmanites from the Michigan Coal Basin |
1944 |
| details |
Early Pennsylvanian |
|
Michigan |
Arnold,C.A. A Heterosporous species of Bowmanites from the Michigan Coal Basin |
1944 |
| details |
Devonian |
|
Nd |
Kr¤usel,R. Dawson's "sporocarps", a new class of Devonian Thallophytes. |
1941 |
| original |
Late Devonian |
|
Pennsylvania |
Arnold,C.A. Observations on fossil plants from the Devonian of eastern North America. IV. Plant remains from the Catskill Delta deposits of northern Pennsylvania and Southern New York. |
1939 |
| original |
Late Devonian |
|
USSR(Voronezh) |
Nikitin,P.A. Fossil plants of the Petino Horizon of the Devonian of the Voronezh District 1. Kryshtofovichia africani, nov.gen.et sp. |
1934 |
| details |
Paleozoic |
|
USSR(Khakass A.O.) |
Ergalskaya,Z. Description of the microscopicalstructure of the coal of the Dvukharshinny Seam, Chernogorski Mines, Minusinsk Basin, Russia. |
1930 |
| details |
Paleozoic |
|
USSR(Khakass A.O.) |
Ergalskaya,Z. Description of the microscopicalstructure of the coal of the Dvukharshinny Seam, Chernogorski Mines, Minusinsk Basin, Russia. |
1930 |
| details |
Paleozoic |
|
USSR(Khakass A.O.) |
Ergalskaya,Z. Description of the microscopicalstructure of the coal of the Dvukharshinny Seam, Chernogorski Mines, Minusinsk Basin, Russia. |
1930 |