Fromea |
Fromea expolita
|
Canada(NWT,Mackenzie) |
Hauterivian |
Barremian |
Fromea |
Fromea senilis
|
Canada(NWT,Mackenzie) |
Early Valanginian |
Middle Valanginian |
Fromea |
Fromea triquetra
|
Canada(NWT,Mackenzie) |
Barremian |
|
Palaeostomocystis |
Palaeostomocystis expolita
|
Canada(NWT,Mackenzie) |
Hauterivian |
Barremian |
Palaeostomocystis |
Palaeostomocystis senilis
|
Canada(NWT,Mackenzie) |
Early Valanginian |
Middle Valanginian |
Palaeostomocystis |
Palaeostomocystis triquetra
|
Canada(NWT,Mackenzie) |
Barremian |
|
Prolixosphaeridium |
Prolixosphaeridium spissum
|
Canada(NWT,Mackenzie) |
Early Valanginian |
Middle Valanginian |
Sentusidinium |
Sentusidinium separatum
|
Canada(NWT,Mackenzie) |
Early Valanginian |
Middle Valanginian |
Cyclonephelium |
Cyclonephelium brevispinosum
|
Canada(W.Canada) |
Aptian |
|
Palaeohystrichophora |
Palaeohystrichophora brevispinosa
|
Canada(W.Canada) |
Aptian |
|
Impagidinium |
Impagidinium aculeatum
|
Caribbean |
Quaternary |
|
Impagidinium |
Impagidinium sphaericum
|
Caribbean |
Quaternary |
|
Leptodinium |
Leptodinium aculeatum
|
Caribbean |
Quaternary |
|
Leptodinium |
Leptodinium sphaericum
|
Caribbean |
Quaternary |
|
Caligodinium |
Caligodinium granulatum
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Cyclonephelium |
Cyclonephelium combinatum
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Cyclonephelium |
Cyclonephelium regulatum
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |