Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Aptian |
Albian |
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Neocomian |
|
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Neocomian |
|
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Neocomian |
|
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Neocomian |
|
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Barremian |
Aptian |
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Cretaceous |
|
Oligosphaeridium |
Oligosphaeridium complex
|
Alaska(North Slope) |
Barremian |
Aptian |
Oligosphaeridium |
Oligosphaeridium vasiformum
|
Alaska(North Slope) |
Valanginian |
|
Oligosphaeridium |
Oligosphaeridium vasiformum
|
Alaska(North Slope) |
Valanginian |
|
Oligosphaeridium |
Oligosphaeridium vasiformum
|
Alaska(North Slope) |
Valanginian |
|
Oligosphaeridium |
Oligosphaeridium vasiformum
|
Alaska(North Slope) |
Valanginian |
|
Oligosphaeridium |
Oligosphaeridium vasiformum
|
Alaska(North Slope) |
Valanginian |
|
Oligosphaeridium |
Oligosphaeridium vasiformum
|
Alaska(North Slope) |
Valanginian |
|
Omatidium |
Omatidium amphiacanthum
|
Alaska(North Slope) |
Oxfordian |
|
Osmundacidites |
Osmundacidites sp
|
Alaska(North Slope) |
Early Cretaceous |
|
Osmundacidites |
Osmundacidites sp
|
Alaska(North Slope) |
Cretaceous |
|