Hiranita Formation

Geology

Group: Chichibumachi

Members: unnamed (2)

Lithologies: not reported (2)

Paleoenvironments: marine indet. (2)

Age range: Langhian or 15.98000 to 13.82000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Langhian15.98 - 13.82Japan (Saitama) (171618)
Middle Miocene15.98 - 11.63Japan (Saitama) (220509)