Hioki Group

Geology

Formations: Kiwado (1), Taoyama (2)

Lithologies: not reported (2), sandstone (1)

Paleoenvironments: marine indet. (2), terrestrial indet. (1)

Age range: Late/Upper Oligocene or 27.30000 to 23.04000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Chattian27.3 - 23.04Japan (Yamaguchi) (127693)
Late/Upper Oligocene27.3 - 23.04Japan (183066)
Late/Upper Oligocene27.3 - 23.04Japan (Yamaguchi) (190897)