Mathurosphaera |
Mathurosphaera rajivii
|
Nd |
Eocene |
Oligocene |
Maturodinium |
Maturodinium inornatum
|
Nd |
Late Pliensbachian |
|
Meiourogonyaulax |
Meiourogonyaulax bulloidea
|
Nd |
Tithonian |
|
Meiourogonyaulax |
Meiourogonyaulax callomonii
|
Nd |
Late Bathonian |
Early Callovian |
Meiourogonyaulax |
Meiourogonyaulax cantrellii
|
Nd |
Late Bathonian |
|
Meiourogonyaulax |
Meiourogonyaulax caytonensis
|
Nd |
Early Callovian |
|
Meiourogonyaulax |
Meiourogonyaulax cristulata
|
Nd |
Early Callovian |
|
Meiourogonyaulax |
Meiourogonyaulax decapitata
|
Nd |
Bajocian |
|
Meiourogonyaulax |
Meiourogonyaulax deflandrei
|
Nd |
Callovian |
|
Meiourogonyaulax |
Meiourogonyaulax dicrypta
|
Nd |
Kimmeridgian |
|
Meiourogonyaulax |
Meiourogonyaulax ghermanii
|
Nd |
Callovian |
Early Oxfordian |
Meiourogonyaulax |
Meiourogonyaulax pila
|
Nd |
Middle Kimmeridgian |
Late Kimmeridgian |
Meiourogonyaulax |
Meiourogonyaulax predae
|
Nd |
Callovian |
Early Oxfordian |
Meiourogonyaulax |
Meiourogonyaulax rioultii
|
Nd |
Early Callovian |
|
Meiourogonyaulax |
Meiourogonyaulax staffinensis
|
Nd |
Early Kimmeridgian |
|
Meiourogonyaulax |
Meiourogonyaulax stoveri
|
Nd |
Hauterivian |
Early Aptian |
Meiourogonyaulax |
Meiourogonyaulax strongyla
|
Nd |
Late Bathonian |
Early Callovian |