Thaynes Limestone

The Thaynes Formation is a geologic formation in Montana and Idaho, United States.

[1] It preserves fossils dating back to the Triassic period, such as Ammonoidea, Actinopterygii, Actinistia, Conodonta, Gastropoda, Nautiloidea, Ichthyosauria, and others.

A diverse fauna known as the Paris biota[2] has been described from the Thaynes Formation.

This article about a specific stratigraphic formation in Montana is a stub.

You can help Wikipedia by expanding it.This article related to the Triassic period is a stub.