Nelsoniella |
Nelsoniella aceras
|
Nd |
Santonian |
Campanian |
Nelsoniella |
Nelsoniella semireticulata
|
Nd |
Santonian |
Campanian |
Nelsoniella |
Nelsoniella tuberculata
|
Nd |
Santonian |
Campanian |
Nematosphaeropsis |
Nematosphaeropsis balcombiana
|
Nd |
Middle Miocene |
|
Nematosphaeropsis |
Nematosphaeropsis philippotii
|
Nd |
Senonian |
|
Nematosphaeropsis |
Nematosphaeropsis velata
|
Nd |
Santonian |
|
Netrelytron |
Netrelytron jurassicum
|
Nd |
Nd |
|
Netrelytron |
Netrelytron par
|
Nd |
Early Kimmeridgian |
|
Netrelytron |
Netrelytron stegastum
|
Nd |
Early Oxfordian |
|
Netrelytron |
Netrelytron trinetrum
|
Nd |
Middle Barremian |
|
Occisucysta |
Occisucysta balios
|
Nd |
Early Kimmeridgian |
|
Occisucysta |
Occisucysta evittii
|
Nd |
Tithonian |
|
Occisucysta |
Occisucysta monoheuriskos
|
Nd |
Early Kimmeridgian |
|
Odontochitina |
Odontochitina athabaskensis
|
Nd |
Barremian |
|
Odontochitina |
Odontochitina blastema
|
Nd |
Nd |
|
Odontochitina |
Odontochitina costata
|
Nd |
Cenomanian |
Turonian |
Odontochitina |
Odontochitina cribropoda
|
Nd |
Senonian |
|