Mikropithon |
Mikropithon amniophorum
|
Nd |
Eocene |
|
Muderongia |
Muderongia crucis
|
Nd |
Late Hauterivian |
|
Muderongia |
Muderongia mcwhaei
|
Nd |
Aptian |
|
Muderongia |
Muderongia perforata
|
Nd |
Turonian |
|
Muderongia |
Muderongia simplex
|
Nd |
Valanginian |
|
Muderongia |
Muderongia staurota
|
Nd |
Early Barremian |
|
Muderongia |
Muderongia tetracantha
|
Nd |
Late Hauterivian |
|
Muderongia |
Muderongia tomaszowensis
|
Nd |
Valanginian |
|
Muiradinium |
Muiradinium dorsispirale
|
Nd |
Nd |
|
Muiriella |
Muiriella plioplax
|
Nd |
Recent |
|
Muratodinium |
Muratodinium fimbriatum
|
Nd |
Paleocene |
|
Nannoceratopsiella |
Nannoceratopsiella permiana
|
Nd |
Early Permian |
|
Nannoceratopsis |
Nannoceratopsis deflandrei
|
Nd |
Nd |
|
Nannoceratopsis |
Nannoceratopsis gracilis
|
Nd |
Bajocian |
|
Nannoceratopsis |
Nannoceratopsis pellucida
|
Nd |
Oxfordian |
|
Nannoceratopsis |
Nannoceratopsis spiculata
|
Nd |
Bajocian |
Bathonian |
Nelchinopsis |
Nelchinopsis kostromiensis
|
Nd |
Valanginian |
|