Cleistosphaeridium |
Cleistosphaeridium multispinosum
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Luxadinium |
Luxadinium propatulum
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Spinidinium |
Spinidinium vestitum
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Cyclonephelium |
Cyclonephelium sp.A Brid.,1971
sp. nov. |
Alaska(North Slope) |
Middle Albian |
Late Albian |
Pseudoceratium |
Pseudoceratium expolitum
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Oligosphaeridium |
Oligosphaeridium anthophorum
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Oligosphaeridium |
Oligosphaeridium sp.A
sp. nov. |
Alaska(North Slope) |
Middle Albian |
Late Albian |
Odontochitina |
Odontochitina operculata
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Exochosphaeridium |
Exochosphaeridium bifidum
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Spiniferites |
Spiniferites ramosus
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Spiniferites |
Spiniferites scabrosus
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Spiniferites |
Spiniferites cingulatus
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Muderongia |
Muderongia tetracantha
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Muderongia |
Muderongia sp.A May & Stei.,1979
sp. nov. |
Alaska(North Slope) |
Middle Albian |
Late Albian |
Palaeoperidinium |
Palaeoperidinium cretaceum
|
Alaska(North Slope) |
Middle Albian |
Late Albian |
Achomosphaera |
Achomosphaera sp
|
Alaska(North Slope) |
Middle Albian |
Late Albian |