Gonyaulacysta |
Gonyaulacysta angulosa
|
France |
Early Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta auctifica
|
Canada(Alberta) |
Late Albian |
|
Gonyaulacysta |
Gonyaulacysta axicerastes
|
Nd |
Nd |
|
Gonyaulacysta |
Gonyaulacysta boreas
|
England |
Early Barremian |
|
Gonyaulacysta |
Gonyaulacysta canadensis
|
Canada(W.Canada) |
Oxfordian |
Late Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta cassidata
|
Nd |
Nd |
|
Gonyaulacysta |
Gonyaulacysta cauda
|
England |
Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta crassicornuta
|
Nd |
Nd |
|
Gonyaulacysta |
Gonyaulacysta cretacea
|
Nd |
Nd |
|
Gonyaulacysta |
Gonyaulacysta dangeardii
|
France |
Late Callovian |
|
Gonyaulacysta |
Gonyaulacysta downiei
|
Canada(W.Canada) |
Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta dualis
|
Canada(NWT,Franklin) |
Late Oxfordian |
Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta ehrenbergii
|
France |
Early Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta elamii
|
Nd |
Nd |
|
Gonyaulacysta |
Gonyaulacysta episoma
|
England(Yorkshire) |
Late Barremian |
|
Gonyaulacysta |
Gonyaulacysta exilicristata
|
England(Isle of Wight) |
Cenomanian |
|
Gonyaulacysta |
Gonyaulacysta fallax
|
Europe |
Danian |
|