Cannosphaeropsis |
Cannosphaeropsis choneta
|
Nd |
Cenomanian |
|
Cannosphaeropsis |
Cannosphaeropsis densa
|
Nd |
Late Albian |
Cenomanian |
Cannosphaeropsis |
Cannosphaeropsis densiradiata
|
Nd |
Cenomanian |
|
Cannosphaeropsis |
Cannosphaeropsis hyperacantha
|
Nd |
Santonian |
|
Cannosphaeropsis |
Cannosphaeropsis mirabilis
|
Nd |
Late Jurassic |
|
Cannosphaeropsis |
Cannosphaeropsis paucispina
|
Nd |
Late Oxfordian |
|
Cannosphaeropsis |
Cannosphaeropsis perforata
|
Nd |
Late Callovian |
|
Cannosphaeropsis |
Cannosphaeropsis peridictya
|
Nd |
Aptian |
Cenomanian |
Cannosphaeropsis |
Cannosphaeropsis philippotii
|
Nd |
Senonian |
|
Cannosphaeropsis |
Cannosphaeropsis pulchra
|
Nd |
Coniacian |
|
Cannosphaeropsis |
Cannosphaeropsis reticulensis
|
Nd |
Early Eocene |
Late Eocene |
Cannosphaeropsis |
Cannosphaeropsis scaffoldii
|
Nd |
Eocene |
|
Cannosphaeropsis |
Cannosphaeropsis speciosa
|
Nd |
Late Callovian |
|
Cannosphaeropsis |
Cannosphaeropsis tutulosa
|
Nd |
Cenomanian |
|
Cannosphaeropsis |
Cannosphaeropsis utinensis
|
Nd |
Coniacian |
Maastrichtian |
Gonyaulacysta |
Gonyaulacysta transparens
|
Nd |
Early Callovian |
|