Melitasphaeridium |
Melitasphaeridium aequabile
|
Japan(Honshu I.) |
Miocene |
Early Pleistocene |
Operculodinium |
Operculodinium echigoense
|
Japan(Honshu I.) |
Miocene |
|
Reticulatosphaera |
Reticulatosphaera stellata
|
Japan(Honshu I.) |
Miocene |
Early Pleistocene |
Spiniferites |
Spiniferites strictus
|
Japan(Honshu I.) |
Late Miocene |
Late Neogene |
Spiniferites |
Spiniferites firmus
|
Japan(Honshu I.) |
Late Miocene |
Early Pleistocene |
Spiniferites |
Spiniferites serratus
|
Japan(Honshu I.) |
Late Neogene |
Early Pleistocene |
Spiniferites |
Spiniferites hexatypicus
sp. nov. |
Japan(Honshu I.) |
Middle Miocene |
Late Miocene |
Spiniferites |
Spiniferites asperulus
|
Japan(Honshu I.) |
Late Miocene |
Early Pleistocene |
Tectatodinium |
Tectatodinium minutum
|
Japan(Honshu I.) |
Miocene |
|