Gonyaulacysta |
Gonyaulacysta transparens
|
England |
Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta transparens
|
England |
Callovian |
|
Gonyaulax |
Gonyaulax culmula
|
England |
Kimmeridgian |
|
Gonyaulax |
Gonyaulax culmula
|
England |
Portlandian |
|
Gorgonisphaeridium |
Gorgonisphaeridium diversispinosum
|
England |
Sinemurian |
|
Gorgonisphaeridium |
Gorgonisphaeridium diversispinosum
|
England |
Pliensbachian |
|
Gorgonisphaeridium |
Gorgonisphaeridium diversispinosum
|
Germany |
Pliensbachian |
|
Granodiscus |
Granodiscus granulatus
|
Germany |
Toarcian |
|
Heslertonia |
Heslertonia pellucida
|
England |
Kimmeridgian |
|
Heslertonia |
Heslertonia pellucida
|
France |
Kimmeridgian |
|
Hexagonifera |
Hexagonifera jurassica
|
England |
Kimmeridgian |
|
Hexagonifera |
Hexagonifera jurassica
|
France |
Kimmeridgian |
|
Hexagonifera |
Hexagonifera suspecta
|
USSR(Moscow) |
Late Kimmeridgian |
Portlandian |
Histiophora |
Histiophora ornata
|
England |
Kimmeridgian |
|
Histiophora |
Histiophora ornata
|
France |
Kimmeridgian |
|
Hystrichodinium |
Hystrichodinium amphiacanthum
|
New Guinea(Papua) |
Late Jurassic |
|
Hystrichogonyaulax |
Hystrichogonyaulax nealei
|
England |
Oxfordian |
|