Hystrichosphaeridium |
Hystrichosphaeridium capitatum
|
Australia(W.Australia) |
Oxfordian |
Kimmeridgian |
Prolixosphaeridium |
Prolixosphaeridium capitatum
|
Australia(W.Australia) |
Oxfordian |
Kimmeridgian |
Gonyaulacysta |
Gonyaulacysta episoma
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Gonyaulacysta |
Gonyaulacysta orthoceras
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Pareodinia |
Pareodinia ceratophora
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Fromea |
Fromea amphora
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Broomea |
Broomea jaegeri
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Canningia |
Canningia colliveri
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Cleistosphaeridium |
Cleistosphaeridium polypes
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Hystrichosphaeridium |
Hystrichosphaeridium arundum
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Oligosphaeridium |
Oligosphaeridium complex
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Oligosphaeridium |
Oligosphaeridium prolixispinosum
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Oligosphaeridium |
Oligosphaeridium pulcherrimum
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Tanyosphaeridium |
Tanyosphaeridium sp. Sing.,1971
sp. nov. |
Canada(Alberta) |
Middle Albian |
Late Albian |
Cyclonephelium |
Cyclonephelium distinctum
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Hystrichosphaera |
Hystrichosphaera ramosa
|
Canada(Alberta) |
Middle Albian |
Late Albian |