Nematosphaeropsis |
Nematosphaeropsis densiradiata
|
Australia(W.Australia) |
Cenomanian |
|
Nematosphaeropsis |
Nematosphaeropsis philippotii
|
Nd |
Nd |
|
Nematosphaeropsis |
Nematosphaeropsis pusulosa
|
W.Germany |
Early Oligocene |
|
Nematosphaeropsis |
Nematosphaeropsis velata
|
England(Isle of Wight) |
Santonian |
|
Netrelytron |
Netrelytron trinetrum
|
England(Yorkshire) |
Middle Barremian |
|
Noricysta |
Noricysta fimbriata
|
Nd |
Nd |
|
Noricysta |
Noricysta pannucea
|
Nd |
Nd |
|
Noricysta |
Noricysta varivallata
|
Nd |
Nd |
|
Occisucysta |
Occisucysta balios
|
Nd |
Nd |
|
Occisucysta |
Occisucysta evittii
|
Nd |
Nd |
|
Occisucysta |
Occisucysta monoheuriskos
|
Nd |
Nd |
|
Odontochitina |
Odontochitina athabaskensis
|
Nd |
Nd |
|
Odontochitina |
Odontochitina costata
|
Nd |
Nd |
|
Odontochitina |
Odontochitina cribropoda
|
Nd |
Nd |
|
Odontochitina |
Odontochitina operculata
|
Nd |
Nd |
|
Odontochitina |
Odontochitina porifera
|
Nd |
Nd |
|
Odontochitina |
Odontochitina subbaramana
|
Nd |
Nd |
|