Pseudoceratium |
Pseudoceratium polymorphum
|
Canada(Arctic) |
Albian |
|
Pseudoceratium |
Pseudoceratium retusum
|
Canada(Arctic) |
Late Barremian |
Early Aptian |
Pseudoceratium |
Pseudoceratium sp
|
Canada(Arctic) |
Late Aptian |
|
Pseudoceratium |
Pseudoceratium sp.1
|
Canada(Arctic) |
Late Barremian |
|
Pseudoceratium |
Pseudoceratium toveae
|
Canada(Arctic) |
Late Barremian |
|
Pseudoceratium |
Pseudoceratium toveae
|
Canada(Arctic) |
Early Aptian |
|
Pterospermella |
Pterospermella australiensis
|
Canada(Arctic) |
Late Barremian |
|
Pterospermella |
Pterospermella australiensis
|
Canada(Arctic) |
Aptian |
Albian |
Rhombodella |
Rhombodella paucispina
|
Canada(Arctic) |
Middle Albian |
Late Albian |
Senoniasphaera |
Senoniasphaera microreticulata
|
Canada(Arctic) |
Late Aptian |
|
Sirmiodinium |
Sirmiodinium grossii
|
Canada(Arctic) |
Late Barremian |
Early Aptian |
Sirmiodinium |
Sirmiodinium grossii
|
Canada(Arctic) |
Aptian |
Late Albian |
Spiniferites |
Spiniferites sp
|
Canada(Arctic) |
Aptian |
Albian |
Stiphrosphaeridium |
Stiphrosphaeridium anthophorum
|
Canada(Arctic) |
Middle Albian |
Late Albian |
Subtilisphaera |
Subtilisphaera perlucida
|
Canada(Arctic) |
Late Barremian |
Early Albian |
Tanyosphaeridium |
Tanyosphaeridium boletus
|
Canada(Arctic) |
Early Aptian |
|
Tanyosphaeridium |
Tanyosphaeridium isocalamum
|
Canada(Arctic) |
Late Barremian |
|