Chondrichthyans from the base of the Irati Formation (Early Permian, Parána Basin), São Paulo, Brazil

2010 ◽  
Vol 18 (2-3) ◽  
pp. 528-537 ◽  
Author(s):  
Artur Chahud ◽  
Thomas R. Fairchild ◽  
Setembrino Petri
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Early Permian ◽  
Irati Formation ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals Holocephali From the Irati Formation (Paraná Basin), Brazil: Origin, Paleogographical and Paleoenvironmental Considerations

2020 ◽  
Author(s):  
Artur Chahud
Keyword(s):  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Irati Formation ◽  
Paraná Basin ◽  
Parana Basin

AbstractThe Permian (Cisuralian) Irati Formation, from the Brazilian southeastern Paraná Basin bears, at some levels, Chondrichthyes, besides other vertebrates. Outcrops of this unit are frequent at the state of São Paulo eastern belt. Two members of the Irati are recognized at this state, Assistência, the upper, and Taquaral. A sandy facies, mostly at the base of the Taquaral, is noteworthy by the richness of the Chondrichthyes, mainly Holocephali. The Petalodontiformes are the Chondrichthyes most abundant, so far referred to Itapyrodus punctatus. Recent studies of several specimens revealed that some morphotypes must belong to different species of the genus Itapyrodus. Others are akin to this genus, justifying a proposition of an endemic family Itapyrodidae. The presence of this endemic family is an argument, among others, for a proposed isolation of two Brazilan Basins northeast Parnaíba and southeast Paraná, during the time of deposition of the Irati, inasmuch as Itapyrodidae are present in both basins.

scholarly journals GEOLOGIA E PALEONTOLOGIA DO MEMBRO TAQUARAL (EOPERMIANO) NO AFLORAMENTO DO RIO DA CABEÇA, ESTADO DE SÃO PAULO

2020 ◽  
Vol 30 (1) ◽  
pp. 19-30
Author(s):  
Artur Charud
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Plane Parallel ◽  
Irati Formation ◽  
Large Numbers ◽  
Paraná Basin ◽  
Parana Basin

The Irati Formation, Permian (Cisuralian) of the Paraná Basin, stands out for important geological and paleontological characteristics. Two members are recognized, Taquaral and Assistência. Most of the Taquaral Member is composed of silty-clayey, gray sediments with plane-parallel laminations and at the base there are conglomeratic sandstones with large numbers of vertebrate fossils. The Cabeça River outcrop has the greatest thickness of the sandy facies, 43cm, the others are 9.5 and 15cm thick, but the lowest fossil density, 0,5fossil/cm². The present work discusses and characterizes the taphonomy and paleoictiofauna of this outcrop. Most fossils are teeth, scales and indeterminate bone parts of Actinopterygii (Palaeonisciformes) and indeterminate Xenacanthiformes teeth.

scholarly journals The Tatuí Formation (Early Permian, Paraná Basin), Brazil: Paleontology and Paleoenvironmental Considerations

2015 ◽  
Vol 19 (2) ◽  
pp. 153-158
Author(s):  
Artur Chahud ◽  
Setembrino Petri
Keyword(s):  
Sao Paulo ◽  
Second Phase ◽  
São Paulo ◽  
Early Permian ◽  
Third Stage ◽  
Paraná Basin ◽  
Eastern Border ◽  
Fish Remains ◽  
Parana Basin ◽  
Geological Units

<p>The Tatuí Formation, one of the Brazilian Paraná Basin geological units, is developed solely in the State of São Paulo, southeast Brazil. It is studied herein, through outcrops at the eastern border of the basin, which are siltstones and fine sandstones, interbedded with some coarse and conglomeratic sandstones. Published papers on its fossils are sparse, dealing with some groups but not involving the entire association. This paper deals with ichnofossils, arthropods (conchostracans, isopods, and indeterminate crustaceans), plants (pteridophytes and spermatophytes) and fish remains (scales and teeth of Actinopterygii and Sarcopterygii). Foraminifers and sponge spicules were reported in short communications without illustrations and from uncertain stratigraphic positions. The Tatuí Formation paleoenvironmental deposition evolved through three phases. The first contains only the euryhaline fossils in siltstone beds. The second phase is regressive, with continental fossils (conchostracans and plants) in massive or laminated siltstone beds and conglomerates. The third stage is transgressive with hummocky cross – stratification in sandstone and increasing salinity.</p><p> </p><p><strong>La Formación Tatuí (Pérmico Temprano, Cuenca del Paraná), Brasil: Consideraciones paleontológicas y paleoambientales</strong></p><p> </p><p><strong>Resumen</strong></p>La Formación Tatuí es una unidad litoestratigráfica de la Cuenca del Paraná que aflora exclusivamente en el Estado de São Paulo, Brasil. En su borde nororiental está formada por limolitas y areniscas finas que poseen intercalaciones de areniscas gruesas y conglomeráticas. Este trabajo caracterizó en esta formación diversas evidencias de fósiles: huellas,  artrópodos (conchostracos, crustáceos isópodos e indeterminados), vegetales (helechos y fanerógamas) y restos de vertebrados (escamas y dientes de Actinopterygii y Sarcopterygii). Foraminíferos y espículas de esponjas fueron reportados en comunicaciones breves, entretanto, sin estar acompañado de ilustraciones y de sus posiciones estratigráficas. Tres fases de deposición permiten reconstruir el paleoambiente de la Formación Tatuí. En la primera fase hay presencia solamente de fósiles eurihalinas en limolitas. En la segunda fase, fósiles continentales (conchostracos y vegetales) que están presentes en camadas limolíticas masivas o laminadas y en conglomerados vinculados a una etapa regresiva. Finalmente, la tercera fase se caracteriza por una etapa transgresiva con la presencia de estratificación cruzada “hummocky” y aumento de la salinidad.</p>

A plant fossil assemblage of Lycopodiopsis cf. derbyi from the Corumbataí Formation, Paraná Basin, São Paulo State, Brazil

2021 ◽  
Author(s):  
Thaís Silvana de Carvalho ◽  
Marcelo Adorna Fernandes ◽  
Frésia Ricardi-Branco ◽  
Aline Marcele Ghilardi ◽  
Bernardo de Campos Pimenta e Marque Peixoto ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Fossil Assemblage ◽  
Paulo State ◽  
Plant Fossil ◽  
Paraná Basin ◽  
São Paulo State ◽  
Parana Basin

Pennsylvanian palynofloras from the Itu rhythmites (Itararé Subgroup, Paraná Basin) in São Paulo State, Brazil

2010 ◽  
Vol 53 (2) ◽  
pp. 69-83 ◽  
Author(s):  
Paulo A. Souza ◽  
Cristina M. Félix ◽  
Annabel Pérez-Aguilar ◽  
Setembrino Petri
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
Paraná Basin ◽  
São Paulo State ◽  
Parana Basin

Geochemistry of siltstones from the Permian Corumbataí Formation from the Paraná Basin(State of São Paulo, Brazil): Insights of provenance, tectonic and climatic settings

2020 ◽  
Vol 102 ◽  
pp. 102582 ◽  
Author(s):  
Cibele Carolina Montibeller ◽  
Guillermo Rafael Beltran Navarro ◽  
Antenor Zanardo ◽  
Rosemarie Rohn ◽  
Carolina Del Roveri ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals PALEOENVIRONMENTAL EVOLUTION OF THE ITARARÉ GROUP (PARANÁ BASIN) IN THE REGIONS OF SALTO AND ITU, EAST OF SÃO PAULO STATE, BRAZIL

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Sérgio Bergamaschi ◽  
Renata Marins Alvim Gama de Oliveira ◽  
Victor Matheus Joaquim Salgado Campos ◽  
Gabriel Paravidini de Souza ◽  
Gabrielle Ferreira Pinto ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
Paleoenvironmental Evolution ◽  
Paraná Basin ◽  
São Paulo State ◽  
Parana Basin

Dinos among the dunes: Dinoturbation in the Pirambóia formation (Paraná basin), São Paulo State and comments on cross-section tracks

2021 ◽  
pp. 103252
Author(s):  
Beatriz Christofoletti ◽  
Bernardo C.P.M. Peixoto ◽  
Lucas V. Warren ◽  
Lucas Inglez ◽  
Marcelo Adorna Fernandes ◽  
...  
Keyword(s):  
Cross Section ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
Paraná Basin ◽  
São Paulo State ◽  
Parana Basin
Sign in / Sign up

Export Citation Format

Share Document