Lower Gualcamayo Member

Geology

Formation: Gualcamayo

Lithologies: "shale" (2), "limestone" (2)

Paleoenvironments: offshore shelf (2)

Age range: base of the Arenig to the top of the Llanvirn or 477.10000 to 458.20000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Arenig477.1 - 468.0Argentina (235374)
Llanvirn468.0 - 458.2Argentina (8873)