Rio Grande Formation

Geology

Members: unnamed (1)

Lithologies: siltstone (1), "limestone" (1)

Paleoenvironments: shallow subtidal indet. (1)

Age range: base of the Campanian to the top of the Maastrichtian or 83.60000 to 66.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Campanian83.6 - 72.2Jamaica (Portland ) (116616 116617 116618 116619 116620)
Late/Upper Campanian83.6 - 72.2Jamaica (198683)
Maastrichtian72.2 - 66.0Jamaica (Portland) (84789)