Gonyaulacysta |
Gonyaulacysta nuciformis
|
England |
Early Oxfordian |
|
Gonyaulacysta |
Gonyaulacysta nuciformis
|
Nd |
Callovian |
Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta pachyderma
|
Nd |
Oxfordian |
Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta perforans
|
Nd |
Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta sarjeantii
|
Nd |
Kimmeridgian |
Portlandian |
Gonyaulacysta |
Gonyaulacysta scarburghensis
|
Nd |
Bathonian |
Oxfordian |
Gonyaulacysta |
Gonyaulacysta scottii
|
Nd |
Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta systremmata
|
Nd |
Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta transparens
|
Nd |
Callovian |
|
Gonyaulacysta |
Gonyaulacysta whatleyi
|
Nd |
Bathonian |
Callovian |
Gonyaulax |
Gonyaulax culmula
|
Nd |
Portlandian |
|
Gonyaulax |
Gonyaulax parvimarginata
|
Nd |
Kimmeridgian |
|
Herendeenia |
Herendeenia pisciformis
|
Nd |
Portlandian |
|
Herendeenia |
Herendeenia pisciformis
|
Pakistan |
Late Portlandian |
|
Heslertonia |
Heslertonia pellucida
|
Nd |
Kimmeridgian |
|
Hexagonifera |
Hexagonifera jurassica
|
Nd |
Kimmeridgian |
|
Histiophora |
Histiophora ornata
|
Nd |
Kimmeridgian |
|