Rio do Rasto Formation explained

Rio do Rasto Formation
Type:	Geological formation
Period:	Lopingian
Age:	Late Permian
Prilithology:	Shale, sandstone
Region:	Paraná, Santa Catarina, Rio Grande do Sul
Coordinates:	-28.4072°N -49.5461°W
Paleocoordinates:	-41.3°N -22.4°W
Unitof:	Paraná & Pelotas Basins
Subunits:	Morro Pelado Mb., Serrinha Mb.
Underlies:	Pirambóia Formation (Paraná Basin) Botucatu Formation (Pelotas Basin)
Overlies:	Teresina Formation
Extent:	Paraná Basin
Map:	Mapa Geologia Bacia do Paraná simples.png

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]}

Fossil content

The following fossils have been uncovered from the formation:^{[3] [4]}

• Flora
  • Schizoneura
  • Glossopteris
  • Paracalamites
  • Pecopteris
• Bivalves
  • Leinzia
  • Palaeomutela
  • Terraia
• Gastropods
  • Pseudestheria
  • Monoleiolophus
  • Euestheria
  • Asmussia
  • Liograpta
• Synapsids
  • Anteosauria indet.
  • Endothiodon
  • Pampaphoneus biccai
  • Rastodon procurvidens^[5]
  • Tapinocephalidae indet.
  • Tiarajudens eccentricus
  • Titanosuchidae indet.
• Parareptiles
  • Provelosaurus americanus
• Amphibians
  • Australerpeton cosgriffi
  • Bageherpeton longignathus
  • Konzhukovia sangabrielensis
  • Parapytanga catarinensis
  • Rastosuchus hammeri
• Fish
  • Paranaichthys longianalis^[6]
  • Actinopterygii species A-C^[7]
  • Xenacanthus ragonhai^[8]

See also

• List of dinosaur-bearing rock formations
• Fremouw Formation
• Irati Formation
• Rio Bonito Formation

References

Bibliography

Notes and References

1. Web site: Associação dos Municípios do Extremo Sul Catarinense . AMESC . 2015-11-10 . dead . https://web.archive.org/web/20160222124848/http://www.amesc.com.br/conteudo/?item=1438&fa=1434&cd=3390 . 2016-02-22 .
2. Web site: SigRH . Sigrh.sp.gov.br . 2015-11-10.
3. Langer et al., 2008, p.1
4. Boos . A. D. S. . Kammerer . C. F. . Schultz . C. L. . Paes Neto . V. D. . 2015-11-01 . A tapinocephalid dinocephalian (Synapsida, Therapsida) from the Rio do Rasto Formation (Paraná Basin, Brazil): Taxonomic, ontogenetic and biostratigraphic considerations . Journal of South American Earth Sciences . 63 . 375–384 . 10.1016/j.jsames.2015.09.003 . 2015JSAES..63..375B . 0895-9811.
5. Boos et al., 2016, p.4
6. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=248931 Paranaichthys longianalis
7. Vega-Dias . Cristina . Vieira Dias . Eliseu . Richter . Martha . 2000 . ACTINOPTERYGIAN REMAINS FROM THE RIO DO RASTO FORMATION, UPPER PERMIAN OF THE PARANÁ BASIN, BRAZIL . Acta Geologica Leopoldensia . XXIII . 51 . 21–31.
8. Pauliv . Victor E. . Dias . Eliseu V. . Sedor . Fernando A. . Ribeiro . Ana Maria . 2014 . A new Xenacanthiformes shark (Chondrichthyes, Elasmobranchii) from the Late Paleozoic Rio do Rasto Formation (Paraná Basin), Southern Brazil . Anais da Academia Brasileira de Ciências . en . 86 . 1 . 135–145 . 10.1590/0001-37652014107612 . 0001-3765. free . 24676160 .