Rio do Rasto Formation

Rio do Rasto Formation
Rio do Rasto Formation
Stratigraphic range: Late Permian
Type	Geological formation
Unit of	Paraná & Pelotas Basins
Sub-units	Morro Pelado Mb., Serrinha Mb.
Underlies	Pirambóia Formation (Paraná Basin); Botucatu Formation (Pelotas Basin)
Overlies	Teresina Formation
Lithology
Primary	Shale, sandstone
Location
Coordinates	28°24′26″S 49°32′46″W / 28.40722°S 49.54611°W
Approximate paleocoordinates	41°18′S 22°24′W / 41.3°S 22.4°W
Region	Paraná, Santa Catarina, Rio Grande do Sul
Country	Brazil
Extent	Paraná Basin
	; Extent of Paleozoic (including the Rio do Rasto Formation) and Mesozoic units in the Paraná Basin in light blue

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.^[1]^[2]

The following fossils have been uncovered from the formation:^[3]

^ "Associação dos Municípios do Extremo Sul Catarinense". AMESC. Archived from the original on 2016-02-22. Retrieved 2015-11-10.
^ "SigRH". Sigrh.sp.gov.br. Retrieved 2015-11-10.
^ Langer et al., 2008, p.1
^ Boos et al., 2016, p.4
^ Paranaichthys longianalis at Fossilworks.org

Boos, Alessandar D.S.; Christian F. Kammerer; Cesar L. Schultz; Marina B. Soares, and Ana L.R. Ilha. 2016. A New Dicynodont (Therapsida: Anomodontia) from the Permian of Southern Brazil and Its Implications for Bidentalian Origins. PLOS ONE 11(5). 1–21. . doi:10.1371/journal.pone.0155000 PMID 27224287 PMC 4880204
Langer, Max Cardoso; Estevan Eltink; Jonathas de Souza Bittencour, and R. Rohn. 2008. Uma janela paleobiológica para o Permiano continental Sul-americano, 1–17. Serra do Cadeado, PR. Accessed 2017-08-19.