Achomosphaera |
Achomosphaera ramulifera
|
Japan(Hokkaido I.) |
Middle Eocene |
Early Oligocene |
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Japan(Ibaraki Pref.) |
Oligocene |
|
Areosphaeridium |
Areosphaeridium sp
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Bellatudinium |
Bellatudinium hokkaidoanum
|
Japan(Hokkaido I.) |
Early Oligocene |
|
Bellatudinium |
Bellatudinium hokkaidoanum
sp. nov. |
Japan(Hokkaido I.) |
Early Oligocene |
|
Brigantedinium |
Brigantedinium sp
|
Japan(Hokkaido I.) |
Early Oligocene |
|
Brigantedinium |
Brigantedinium sp
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Dapsilidinium |
Dapsilidinium simplex
|
Japan(Hokkaido I.) |
Late Eocene |
|
Deflandrea |
Deflandrea sp
|
Japan(Hokkaido I.) |
Middle Eocene |
Late Eocene |
Hexagonifera |
Hexagonifera sp.A
sp. nov. |
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Impagidinium |
Impagidinium sp
|
Japan(Hokkaido I.) |
Early Oligocene |
|
Lejeunecysta |
Lejeunecysta hyalina
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Lejeunecysta |
Lejeunecysta hyalina
|
Japan(Hokkaido I.) |
Middle Eocene |
Early Oligocene |
Lentinia |
Lentinia serrata
|
Japan(Hokkaido I.) |
Middle Eocene |
Late Eocene |
Micrhystridium |
Micrhystridium sp
|
Japan(Hokkaido I.) |
Middle Eocene |
Early Oligocene |
Micrhystridium |
Micrhystridium sp
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Nematosphaeropsis |
Nematosphaeropsis lemniscata
|
Japan(Hokkaido I.) |
Middle Eocene |
Late Eocene |