Planorbina |
Planorbina subcompacta
|
USSR(Urals) |
Early Bajocian |
|
Platychila |
Platychila marginifera
|
USSR(Urals) |
Bathonian |
|
Platychila |
Platychila planiformis
|
USSR(Urals) |
Early Bajocian |
|
Platychila |
Platychila prolongata
|
USSR(Urals) |
Bathonian |
|
Platychila |
Platychila punctata
|
USSR(Urals) |
Keuper |
|
Platychila |
Platychila simplex
|
USSR(Urals) |
Early Bajocian |
|
Platychila |
Platychila simplex
|
USSR(Urals) |
Bajocian |
|
Platychila |
Platychila stromatifera
|
USSR(Urals) |
Early Bajocian |
|
Platychila |
Platychila tugaraktschanensis
|
USSR(Urals) |
Bathonian |
|
Plicatella |
Plicatella incisurata
|
USSR(Urals) |
Aptian |
|
Plicatella |
Plicatella rotundiformis
|
USSR(Urals) |
Early Albian |
Middle Albian |
Plicatella |
Plicatella sp
|
USSR(Urals) |
Valanginian |
|
Plicatella |
Plicatella trichacantha
|
USSR(Urals) |
Aptian |
|
Plicatella |
Plicatella trichacantha
|
USSR(Urals) |
Aptian |
Aptian |
Politusella |
Politusella multispinosa
|
USSR(Urals) |
Bathonian |
|
Politusella |
Politusella parvaereticulata
|
USSR(Urals) |
Aptian |
|
Politusella |
Politusella pseudoreticulata
|
USSR(Urals) |
Bathonian |
|