Hikagenosawa Formation

Geology

Group: Yezo

Members: unnamed (8), M7 (12)

Lithologies: not reported (1), mudstone (15), siltstone (4), tuff (12)

Paleoenvironments: marine indet. (8), offshore (12)

Age range: base of the Late/Upper Albian to the top of the Early/Lower Turonian or 106.30000 to 89.80000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Albian106.3 - 100.5Japan (276127 276128 276129)
Early/Lower Cenomanian100.5 - 93.9Japan (Hokkaido) (62181 62476 62633 62634 62648 62649 62650 62651 70530 70535 70536 70537)
Late/Upper Cenomanian100.5 - 93.9Japan (Hokkaido) (49046)
Early/Lower Turonian93.9 - 89.8Japan (226884 226885 226886 226887)