Pithonella |
Pithonella squamosa
|
Nd |
Nd |
|
Pithonella |
Pithonella tanyphloia
|
Nd |
Nd |
|
Pithonella |
Pithonella thayeri
|
Nd |
Nd |
|
Pithonella |
Pithonella tithonica
|
Nd |
Nd |
|
Pithonella |
Pithonella transitoria
|
Nd |
Nd |
|
Pithonella |
Pithonella trilamellata
|
Nd |
Nd |
|
Pithonella |
Pithonella veeversii
|
Nd |
Nd |
|
Plethysyrinx |
Plethysyrinx lata
|
Nd |
Nd |
|
Polygonifera |
Polygonifera chlamydata
|
Nd |
Nd |
|
Polygonifera |
Polygonifera eisenackii
|
India |
Late Jurassic |
Cenomanian |
Polygonifera |
Polygonifera staffinensis
|
Nd |
Nd |
|
Polysphaeridium |
Polysphaeridium ambiguum
|
Nd |
Nd |
|
Polysphaeridium |
Polysphaeridium assamicum
|
India(Assam) |
Paleocene |
Early Eocene |
Polysphaeridium |
Polysphaeridium chems
|
Morocco |
Late Hauterivian |
|
Polysphaeridium |
Polysphaeridium duma
|
Morocco |
Late Hauterivian |
Gargasian |
Polysphaeridium |
Polysphaeridium flexuosum
|
Nd |
Nd |
|
Polysphaeridium |
Polysphaeridium trompetum
|
Australia(Victoria) |
Paleocene |
|