Hakobuchi Formation

Geology

Group: Yezo

Members: unnamed (11), Lower sandy Siltstone (8)

Lithologies: not reported (2), "siliciclastic" (1), mudstone (2), siltstone (8), sandstone (5), "carbonate" (1)

Paleoenvironments: marine indet. (19)

Age range: Early/Lower Maastrichtian or 72.20000 to 66.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Senonian100.5 - 66.0Japan (Hokkaido) (235795 235796)
Early/Lower Maastrichtian72.2 - 66.0Japan (Hokkaido) (94767 129271 129272 129273 129274 129275 129276 129277 129278)
Early/Lower Maastrichtian72.2 - 66.0Japan (174601 174602 174603 174604 174605 174606 174607 194131 194132 212884)