| original |
Middle Devonian |
|
Canada(New Brunswick) |
Gensel,P.G. et al. A new species of Sawdonia with notes on the origin of microphylls and lateral sporangia. |
1975 |
| details |
Devonian |
|
Nd |
Gensel,P.G. Devonian in situ, spores: A survey and discussion. |
1980 |
| details |
Middle Devonian |
|
Nd |
Allen,K.C. A review of in situ, Late Silurian and Devonian spores. |
1980 |
| details |
Devonian |
|
USA |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |
| details |
Emsian |
|
Nd |
Edwards,D. et al. In situ, pollen and spores in plant evolution. 14A -Review of in situ, spores in early land plants. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |