Guacamaya Formation

Geology

Members: unnamed (2)

Lithologies: mudstone (1), "shale" (1), siltstone (1), sandstone (1)

Paleoenvironments: marginal marine indet. (1)

Age range: base of the Sakmarian to the top of the Wolfcampian or 293.52000 to 286.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Wolfcampian298.9 - 286.0Mexico (Hidalgo) (24613)
Sakmarian - Artinskian293.52 - 283.3Mexico (Hidalgo) (23179)