Rio do Rasto Formation

The Rio do Rasto Formation is a Late Permian sedimentary geological formation in the South Region of Brazil. The official name is Rio do Rasto, although in some publications it appears as Rio do Rastro.

Geography
It is found mainly in the Brazilian states of Santa Catarina, Paraná, and Rio Grande do Sul. It was formed during the Late Permian epoch of the Permian period.

Fossil content
The following fossils have been uncovered from the formation:


 * Flora
 * Schizoneura
 * Glossopteris
 * Paracalamites
 * Pecopteris
 * Bivalves
 * Leinzia
 * Palaeomutela
 * Terraia
 * Gastropods
 * Pseudestheria
 * Monoleiolophus
 * Euestheria
 * Asmussia
 * Liograpta
 * Synapsids
 * Anteosauria indet.
 * Endothiodon
 * Pampaphoneus biccai
 * Rastodon procurvidens
 * Tapinocephalidae indet.
 * Tiarajudens eccentricus
 * Titanosuchidae indet.
 * Parareptiles
 * Provelosaurus americanus
 * Amphibians
 * Australerpeton cosgriffi
 * Bageherpeton longignathus
 * Konzhukovia sangabrielensis
 * Parapytanga catarinensis
 * Rastosuchus hammeri
 * Fish
 * Paranaichthys longianalis
 * Actinopterygii species A-C
 * Xenacanthus ragonhai