Oblatinella |
Oblatinella rotundiformis
|
USSR(Urals) |
Callovian |
|
Oblatinella |
Oblatinella vulgaris
|
USSR(Urals) |
Early Triassic |
|
Orbella |
Orbella colliculoides
|
USSR(Urals) |
Aptian |
|
Orbella |
Orbella elegans
|
USSR(Urals) |
Valanginian |
Albian |
Orbella |
Orbella glabra
|
USSR(Urals) |
Bajocian |
Early Bathonian |
Orbella |
Orbella glabrescens
|
USSR(Urals) |
Bajocian |
Callovian |
Orbellaria |
Orbellaria punctata
|
USSR(Urals) |
Early Triassic |
Keuper |
Orbicularia |
Orbicularia aktschhagilensis
|
USSR(Urals) |
Bathonian |
|
Orbicularia |
Orbicularia aliferiniformis
|
USSR(Urals) |
Late Bajocian |
Early Bathonian |
Orbicularia |
Orbicularia asymmetrica
|
USSR(Urals) |
Late Bajocian |
|
Orbicularia |
Orbicularia biangulina
|
USSR(Urals) |
Callovian |
|
Orbicularia |
Orbicularia biangulina
|
USSR(Urals) |
Early Albian |
Middle Albian |
Orbicularia |
Orbicularia biconvexa
|
USSR(Urals) |
Late Bajocian |
Early Bathonian |
Orbicularia |
Orbicularia imperfecta
|
USSR(Urals) |
Early Bajocian |
|
Orbicularia |
Orbicularia media
|
USSR(Urals) |
Bathonian |
Callovian |
Orbicularia |
Orbicularia oblatinoides
|
USSR(Urals) |
Late Bajocian |
Callovian |
Orbicularia |
Orbicularia pectinella
|
USSR(Urals) |
Late Bajocian |
|