Leiofusa |
Leiofusa sp
|
USSR(Siberia) |
Hettangian |
Callovian |
Tasmanites |
Tasmanites sp
|
USSR(Siberia) |
Pliensbachian |
Volgian |
Crassosphaera |
Crassosphaera sp
|
USSR(Siberia) |
Early Pliensbachian |
|
Leiofusa |
Leiofusa spicata
|
USSR(Siberia) |
Early Pliensbachian |
|
Leiofusa |
Leiofusa jurassica
|
USSR(Siberia) |
Bathonian |
Callovian |
Deunffia |
Deunffia sp
|
USSR(Siberia) |
Early Pliensbachian |
|
Crassosphaera |
Crassosphaera hexagonalis
|
USSR(Siberia) |
Late Pliensbachian |
Early Toarcian |
Micrhystridium |
Micrhystridium sp
|
USSR(Siberia) |
Late Pliensbachian |
Callovian |
Metaleiofusa |
Metaleiofusa arcuata
|
USSR(Siberia) |
Late Pliensbachian |
Early Toarcian |
Leiosphaeridia |
Leiosphaeridia sp
|
USSR(Siberia) |
Middle Volgian |
Late Volgian |
Pterospermella |
Pterospermella sp
|
USSR(Siberia) |
Middle Volgian |
Late Volgian |
Pterosphaeridia |
Pterosphaeridia sp
|
USSR(Siberia) |
Late Volgian |
|
Cymatiosphaera |
Cymatiosphaera sp
|
USSR(Siberia) |
Late Volgian |
|
Laevigatisporites |
Laevigatisporites lenaensis
|
USSR(Siberia) |
Middle Volgian |
Late Volgian |
Aratrisporites |
Aratrisporites
|
USSR(Siberia) |
Early Jurassic |
|
Heliosporites |
Heliosporites altmarkensis
|
USSR(Siberia) |
Early Jurassic |
|
Nannoceratopsis |
Nannoceratopsis gracilis
|
USSR(Siberia) |
Late Pliensbachian |
Toarcian |