Gonyaulacysta |
Gonyaulacysta centriconnata
|
England(Lincolnshire) |
Middle Callovian |
Early Oxfordian |
Gonyaulacysta |
Gonyaulacysta eisenackii
|
England(Lincolnshire) |
Callovian |
Oxfordian |
Gonyaulacysta |
Gonyaulacysta jurassica
|
England(Lincolnshire) |
Early Oxfordian |
Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta jurassica
|
England(Dorset) |
Oxfordian |
Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta jurassica
|
England(Dorset) |
Late Bajocian |
Oxfordian |
Gonyaulacysta |
Gonyaulacysta jurassica
|
England(Lincolnshire) |
Late Bathonian |
Middle Oxfordian |
Hapsidaulax |
Hapsidaulax margarethae
|
England(Cambridgeshire) |
Middle Bathonian |
Late Bathonian |
Heibergella |
Heibergella kendelbachia
|
England |
Rhaetian |
|
Hystrichodinium |
Hystrichodinium pulchrum
|
England(Dorset) |
Late Bathonian |
Portlandian |
Isthmocystis |
Isthmocystis distincta
|
England(Lincolnshire) |
Portlandian |
|
Jansonia |
Jansonia sp
|
Scotland |
Bathonian |
|
Kallosphaeridium |
Kallosphaeridium sp
|
England(Dorset) |
Late Toarcian |
Portlandian |
Kallosphaeridium |
Kallosphaeridium sp
|
United Kingdom |
Portlandian |
|
Kalyptea |
Kalyptea stegasta
|
England(Somerset) |
Late Bajocian |
Kimmeridgian |
Kalyptea |
Kalyptea stegasta
|
England(Dorset) |
Late Bajocian |
Kimmeridgian |
Kleithriasphaeridium |
Kleithriasphaeridium corrugatum
|
United Kingdom |
Portlandian |
Ryazanian |
Kleithriasphaeridium |
Kleithriasphaeridium porosispinum
|
England(Lincolnshire) |
Late Kimmeridgian |
Portlandian |