Gonyaulax |
Gonyaulax perforans
|
New Guinea(Papua) |
Late Jurassic |
|
Gonyaulax |
Gonyaulax pyra
|
California |
Late Maastrichtian |
Danian |
Gonyaulax |
Gonyaulax sarjeantii
|
USSR(Moscow) |
Late Jurassic |
|
Gonyaulax |
Gonyaulax sarjeantii
|
USSR(Moscow) |
Late Jurassic |
|
Gonyaulax |
Gonyaulax scottii
|
Australia(W.Australia) |
Early Kimmeridgian |
Middle Kimmeridgian |
Gonyaulax |
Gonyaulax serrata
|
New Guinea(Papua) |
Late Jurassic |
Neocomian |
Gonyaulax |
Gonyaulax tenuiceras
|
W.Germany(Schleswig) |
Late Aptian |
|
Gonyaulax |
Gonyaulax tenuitabulata
|
Germany |
Middle Oligocene |
Middle Miocene |
Gorkadinium |
Gorkadinium rarum
|
Nd |
Nd |
|
Hapsidaulax |
Hapsidaulax margarethae
|
Nd |
Nd |
|
Hebecysta |
Hebecysta brevicornuta
|
Nd |
Nd |
|
Heibergella |
Heibergella aculeata
|
Nd |
Nd |
|
Heibergella |
Heibergella asymmetrica
|
Nd |
Nd |
|
Heibergella |
Heibergella salebrosacea
|
Nd |
Nd |
|
Hemicystodinium |
Hemicystodinium taugourdeaui
|
Nd |
Nd |
|
Hemicystodinium |
Hemicystodinium zoharyi
|
Nd |
Nd |
|
Hemiplacophora |
Hemiplacophora semilunifera
|
Nd |
Nd |
|