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.
| 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 |
| Approximate paleocoordinates | 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 | |
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]
Fossil content
The following fossils have been uncovered from the formation:[3]
- Flora
- Schizoneura
- Glossopteris
- Paracalamites
- Pecopteris
- Bivalves
- Leinzia
- Palaeomutela
- Terraia
- Gastropods
- Pseudestheria
- Monoleiolophus
- Euestheria
- Asmussia
- Liograpta
- Dicynodonts
- Amphibians
- Fish
- Paranaichthys longianalis[5]
See also
- List of dinosaur-bearing rock formations
- Fremouw Formation
- Irati Formation
- Rio Bonito Formation
References
- "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
Bibliography
- 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. 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.
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