Pterospermopsis |
Pterospermopsis onondagaensis
|
Nd |
Middle Devonian |
|
Pterospermopsis |
Pterospermopsis ovatus
|
Nd |
Campanian |
Maastrichtian |
Pterospermopsis |
Pterospermopsis paleatus
|
Nd |
Nd |
|
Pterospermopsis |
Pterospermopsis pelagica
|
Nd |
Late Eocene |
Early Oligocene |
Pterospermopsis |
Pterospermopsis pernambucensis
|
Nd |
Middle Devonian |
|
Pterospermopsis |
Pterospermopsis pluriparietes
|
Nd |
Portlandian |
|
Pterospermopsis |
Pterospermopsis rajada
|
Nd |
Emsian |
|
Pterospermopsis |
Pterospermopsis regularis
|
Nd |
Late Pliocene |
|
Pterospermopsis |
Pterospermopsis rugosa
|
Nd |
Jurassic |
|
Pterospermopsis |
Pterospermopsis scabrata
|
Nd |
Jurassic |
|
Pterospermopsis |
Pterospermopsis shandongensis
|
Nd |
Oligocene |
|
Pterospermopsis |
Pterospermopsis simicus
|
Nd |
Late Riphean |
|
Pterospermopsis |
Pterospermopsis solida
|
Nd |
Early Cambrian |
|
Pterospermopsis |
Pterospermopsis spinosa
|
Nd |
Senonian |
|
Pterospermopsis |
Pterospermopsis timofeevii
|
Nd |
Nd |
|
Pterospermopsis |
Pterospermopsis triangularis
|
Nd |
Permian |
|
Pterospermopsis |
Pterospermopsis typicaus
|
Nd |
Cambrian |
|