Operculodinium |
Operculodinium alsium
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Operculodinium |
Operculodinium centrocarpum
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Operculodinium |
Operculodinium centrocarpum
|
Japan(Hokkaido I.) |
Middle Eocene |
Late Eocene |
Paralecaniella |
Paralecaniella indentata
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Paralecaniella |
Paralecaniella indentata
|
Japan(Hokkaido I.) |
Middle Eocene |
Early Oligocene |
Pterospermella |
Pterospermella sp
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Selenopemphix |
Selenopemphix nephroides
|
Japan(Hokkaido I.) |
Middle Eocene |
Early Oligocene |
Selenopemphix |
Selenopemphix nephroides
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Spinidinium |
Spinidinium sp
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Spinidinium |
Spinidinium sp.A
sp. nov. |
Japan(Hokkaido I.) |
Late Eocene |
|
Spiniferites |
Spiniferites pseudofurcatus
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Spiniferites |
Spiniferites ramosus
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Spiniferites |
Spiniferites ramosus
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Spiniferites |
Spiniferites ramosus
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Spiniferites |
Spiniferites reductus
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|
Spiniferites |
Spiniferites sp
|
Japan(Hokkaido I.) |
Middle Eocene |
Late Eocene |
Spiniferites |
Spiniferites sp
|
Japan(Ibaraki Pref.) |
Early Oligocene |
|