| details |
Westphalian B |
|
Netherlands |
Dijkstra,S.J. Correlation of Coal Seams by megaspores |
1955 |
| details |
Westphalian B |
|
Belgium |
Pi©rart,P. Synopsis of megaspores of the Belgian Westphalian |
1963 |
| details |
Carboniferous |
|
USA |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |
| details |
Pottsville |
|
Kentucky |
Brack-Hanes,S.D. On a Lycopsid cone with Winged spores |
1981 |
| details |
Pottsville |
|
Kentucky |
Brack-Hanes,S.D. On a Lycopsid cone with Winged spores |
1981 |
| details |
Late Carboniferous |
|
Nd |
Hemsley,A.R. Teratisms in living and fossil megaspores of the Lycopsidia: The arrangement and exine Ontogeny |
1997 |
| details |
Carboniferous |
|
Nd |
Chaloner,W.G. et al. Heterospory: Cul-de-Sac or pathway to the seed? (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) |
1991 |
| details |
Westphalian B |
|
Netherlands |
Hemsley,A.R. et al. Caudatosporites, gen.nov. A reappraisal of an anomalous Carboniferous Lycopod seed-megaspore with reference to exine ultrastructure. |
1991 |