Forni Dolostone
Geological formation in northeastern Italy
From Wikipedia, the free encyclopedia
The Forni Dolostone, also known as the Dolomia di Forni, is a Late Triassic (Norian, or Alaunian in the local biochronology)[1][2] dolomite geological formation in northeastern Italy. The formation was deposited in a lagoonal to shallow marine environment.[3]
| Forni Dolostone | |
|---|---|
| Stratigraphic range: Norian (Alaunian) ~ | |
| Type | Geological formation |
| Lithology | |
| Primary | Dolomite |
| Other | Marl |
| Location | |
| Coordinates | 46.4°N 12.6°E |
| Approximate paleocoordinates | 26.5°N 16.0°E |
| Region | Friuli-Venezia Giulia |
| Country | Italy |
| Type section | |
| Named for | Forni di Sopra |
  Forni Dolostone (Italy) | |
Description
It represents deposition in an anoxic marine basin whose maximum depth was about 400 metres (1,300 ft), 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.[3]
Fossil content
The following fossils have been reported from the formation:[3]
| Pterosaurs of the Forni Dolostone | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | Images |
| Austriadactylus[4] | A. cristatus[4] |  | ||
| Preondactylus[1] | P. buffarinii[1] | Found near a small church in the Preone Valley of Udine Province[1] | Found in a gastric pellet |  |
| Seazzadactylus[5] | S. venieri[5] |  | ||
| Eudimorphodon[6] | E. rosenfeldi[6] |  | ||
- Other reptiles
- Fish
- Pseudodalatias barnstonensis
- Sargodon tomicus
- Thoracopterus martinisi[9]
- ?Eopholidophorus forojuliensis
- Holophagus sp.
- Saurichthys sp.
- Arachnids
- Crustaceans
- Acanthochirana triassica
- Antrimpos colettoi
- A. noricus
- Archaeopalinurus levis
- Dusa denticulata
- D. longipes
- Microcaris minuta
- Pseudocoleia mazzolenii
- Rosenfeldia triassica
- Glaessnericaris sp.
- Glyphea sp.
- Flora