Micrhystridium |
Micrhystridium stellatum
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Wanaea |
Wanaea sp
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Valensiella |
Valensiella ovalis
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Micrhystridium |
Micrhystridium densispinum
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Micrhystridium |
Micrhystridium echinoides
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Veryhachium |
Veryhachium valensii
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Veryhachium |
Veryhachium reductum
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Veryhachium |
Veryhachium aster
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Tasmanites |
Tasmanites sp
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Cymatiosphaera |
Cymatiosphaera parva
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Cymatiosphaera |
Cymatiosphaera sp
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Pterospermopsis |
Pterospermopsis sp
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Gonyaulax |
Gonyaulax cladophora
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Micrhystridium |
Micrhystridium sp
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Leiofusa |
Leiofusa tumida
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Peridinium |
Peridinium sp
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|
Pterospermopsis |
Pterospermopsis helios
|
USSR(Arkhangelsk Oblast) |
Early Callovian |
|