Pterospermopsis |
Pterospermopsis helios
|
Germany |
Toarcian |
|
Pterospermopsis |
Pterospermopsis helios
|
Germany |
Aalenian |
|
Pterospermopsis |
Pterospermopsis helios
|
Germany |
Bathonian |
|
Pterospermopsis |
Pterospermopsis helios
|
Germany |
Callovian |
|
Pterosphaeridia |
Pterosphaeridia eisenackii
|
Germany |
Toarcian |
|
Pterosphaeridia |
Pterosphaeridia intersignata
|
Germany |
Toarcian |
|
Pterosphaeridia |
Pterosphaeridia nodosa
|
Germany |
Toarcian |
|
Pterosphaeridia |
Pterosphaeridia undulata
|
Germany |
Toarcian |
|
Pyxidiella |
Pyxidiella pandora
|
New Guinea(Papua) |
Oxfordian |
|
Pyxidiella |
Pyxidiella pandora
|
Australia(W.Australia) |
Kimmeridgian |
|
Pyxidiella |
Pyxidiella scrobiculata
|
France |
Middle Jurassic |
|
Scriniocassis |
Scriniocassis weberi
|
Germany |
Pliensbachian |
|
Scriniocassis |
Scriniocassis weberi
|
Germany |
Toarcian |
|
Scriniocassis |
Scriniocassis weberi
|
Germany |
Aalenian |
|
Scriniocassis |
Scriniocassis weberi
|
USSR(Moscow) |
Late Kimmeridgian |
Portlandian |
Scriniodinium |
Scriniodinium bicuneatum
|
England |
Kimmeridgian |
|
Scriniodinium |
Scriniodinium ceratophorum
|
England |
Oxfordian |
|