Baltisphaeridium |
Baltisphaeridium multispinosum
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Cleistosphaeridium |
Cleistosphaeridium aciculare
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Odontochitina |
Odontochitina sp
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Odontochitina |
Odontochitina silicorum
|
Canada(Alberta) |
Middle Albian |
Late Albian |
Hystrichosphaeridium |
Hystrichosphaeridium cylindratum
sp. nov. |
Canada(Alberta) |
Middle Albian |
Late Albian |
Spinidinium |
Spinidinium vestitum
sp. nov. |
Canada(Alberta) |
Late Albian |
Early Cenomanian |