original |
Late Permian |
Early Triassic |
Europe |
Visscher,H. Time-proportionate micro-evolutionary change among Permian and Triassic gymnospermous pollen grains. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
original |
Early Triassic |
|
Russia(Vologda) |
Krassilov,V.A. et al. Floristic evidence of transitional Permian - Triassic deposits of the Volga - Dvina Region. |
1999 |
original |
Early Triassic |
|
Russia(Vologda) |
Krassilov,V.A. et al. Floristic evidence of Transitional Permian-Triassic deposits of the Volga - Dvina Region. |
1999 |