The Forni Dolostone, also known as the Dolomia di Forni, is a Late Triassic (Norian, or Alaunian in the local biochronology) dolomite geological formation in northeastern Italy. The formation was deposited in a lagoonal to shallow marine environment.

Description

It represents deposition in an anoxic marine basin whose maximum depth was about 400 m, and was surrounded by the shallow water carbonate platform of the Dolomia Principale Formation. The Dolomia di Forni is composed mainly of dark, often cherty, well-bedded dolostone that is frequently thinly laminated and sometimes slumped. Thicker laminae are graded and represent distal turbidites. The basinal facies preserving the tetrapod remains are composed mainly of distal turbidites and carbonate mud deposited by fallout.

Fossil content

The following fossils have been reported from the formation: