Achomosphaera |
Achomosphaera membraniphora
|
Alaska(Bering Sea) |
Late Eocene |
Early Oligocene |
Achomosphaera |
Achomosphaera ramulifera
|
Alaska(Bering Sea) |
Oligocene |
Early Miocene |
Achomosphaera |
Achomosphaera sp. Wigg.,1986
sp. nov. |
Alaska(Bering Sea) |
Late Oligocene |
Early Miocene |
Achomosphaera |
Achomosphaera sp.A Mats.,1983
sp. nov. |
Alaska(Bering Sea) |
Late Oligocene |
Early Miocene |
Achomosphaera |
Achomosphaera spongiosa
sp. nov. |
Alaska(Bering Sea) |
Late Oligocene |
Early Miocene |
Achomosphaera |
Achomosphaera spongiosa
|
Alaska(Bering Sea) |
Late Paleocene |
Miocene |
Algidasphaeridium |
Algidasphaeridium
|
Alaska(Bering Sea) |
Late Miocene |
|
Algidasphaeridium |
Algidasphaeridium capillatum
sp. nov. |
Alaska(Bering Sea) |
Late Miocene |
|
Algidasphaeridium |
Algidasphaeridium capillatum
|
Alaska(Bering Sea) |
Late Paleocene |
Miocene |
Algidasphaeridium |
Algidasphaeridium minutum
|
Canada(Arctic) |
Recent |
|
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Alaska(Bering Sea) |
Late Eocene |
|
Batiacasphaera |
Batiacasphaera criosa
|
Alaska(Bering Sea) |
Late Paleocene |
|
Brigantedinium |
Brigantedinium sp
|
Alaska(Bering Sea) |
Late Oligocene |
Late Neogene |
Chiropteridium |
Chiropteridium galea
|
Alaska(Bering Sea) |
Early Oligocene |
|
Chiropteridium |
Chiropteridium mespilatum
|
Alaska(Bering Sea) |
Early Oligocene |
|
Cribroperidinium |
Cribroperidinium giuseppei
|
Alaska(Bering Sea) |
Eocene |
Early Miocene |
Cyclopsiella |
Cyclopsiella sp
sp. nov. |
Alaska(Bering Sea) |
Late Miocene |
Late Neogene |