details |
Hauterivian |
Aptian |
USSR(Far East) |
Bolkhovitina,N.A. Distribution of Schizaeaceous spores in Jurassic and Lower Cretaceous deposits of Eurasia. |
1971 |
details |
Neocomian |
|
USSR(Siberia) |
Bolkhovitina,N.A. Distribution of Schizaeaceous spores in Jurassic and Lower Cretaceous deposits of Eurasia. |
1971 |
details |
Neocomian |
Aptian |
Canada |
Bolkhovitina,N.A. Distribution of Schizaeaceous spores in Jurassic and Lower Cretaceous deposits of Eurasia. |
1971 |
details |
Neocomian |
|
USA |
Bolkhovitina,N.A. Distribution of Schizaeaceous spores in Jurassic and Lower Cretaceous deposits of Eurasia. |
1971 |