Toyoma Formation

Geology

Members: unnamed (29), Kanayashiki (1)

Lithologies: not reported (1), "siliciclastic" (2), mudstone (8), "shale" (8), sandstone (9), lime mudstone (1), "limestone" (1)

Paleoenvironments: marine indet. (22), carbonate indet. (2), offshore (1), deep-water indet. (5)

Age range: base of the Wuchiapingian to the top of the Changhsingian or 259.90000 to 252.17000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Wuchiapingian259.9 - 254.17Japan (Miyagi) (61934)
Wuchiapingian259.9 - 254.17Japan (107596 107616 107618 107619 109642 113872 113878 113879 113880 113881 113882 113884 114534 114535 212283)
Lopingian259.9 - 252.17Japan (200777)
Wuchiapingian - Changhsingian259.9 - 252.17Japan (133502)
Changhsingian254.17 - 252.17Japan (113883 118937 118962 118963 118964 118965 118967 118968 149800 149801 149802 149803)