scholarly journals Presencia de Bryopsida fértil en los niveles Westfalianos del subgrup Itararé, Cuenca de Paraná, Brasil

2004 ◽  
Vol 25 (1) ◽  
pp. 101-110 ◽  
Author(s):  
Paula G.C. Amaral ◽  
Mary Bernardes De Oliveira ◽  
Fresia Ricardi-Branco ◽  
Jean Broutin
Keyword(s):  
South Africa ◽  
Female Gametophyte ◽  
Sedimentary Rocks ◽  
Russian Platform ◽  
Karoo Basin ◽  
Paulo State ◽  
Age Related ◽  
Tundra Vegetation ◽  
Paraná Basin ◽  
Parana Basin

The bryophyte fossils are rare, mainly in Paleozoic sedimentary rocks in spite of being present since the Silurian Period. In the Division Bryophyta, the fossils that belong to the Class Bryopsida are recognized since the Carboniferous, but they are extremely scarce. They are plentiful only in Permian sediments, in the Petchora, Kuznetsk and Russian Platform basins, also in Antarctica, Karoo basin (the last in South Africa) and India. Identified at the genus Dwykea, gametophyte specimens bearing pleurocarpous sporophyte were recovered from the lowermost levels of Itararé Subgroup, near Campinas city, S. Paulo State. These fossils correspond to the first register of bryophyte female gametophyte for the Carboniferous Period. The microflora in association with these fossils allow correlations of these levels to the Palynozone Ahrensisporites cristatus of Westphalian age. Related to proglacial sediments, they may correspond to a tundra vegetation covering the Northeastern border of Paraná Basin, during the Westphalian.

scholarly journals Record of the genus Lycopodites in the Lower Permian of Paraná Basin, Brazil

2008 ◽  
Vol 80 (3) ◽  
pp. 553-563 ◽  
Author(s):  
Juliana Salvi ◽  
André Jasper ◽  
Fresia Ricardi-Branco ◽  
Mary Elizabeth C. Bernardes-de-Oliveira ◽  
Margot Guerra-Sommer
Keyword(s):  
New Taxa ◽  
Middle Devonian ◽  
Sedimentary Rocks ◽  
Rio Grande ◽  
Lower Permian ◽  
High Latitudes ◽  
Rio Grande Do Sul ◽  
Paulo State ◽  
Paraná Basin ◽  
Parana Basin

The genus Lycopodites, which encompasses the herbaceous forms of the lycopsids, presents broad time and spacial distribution during the Paleozoic in the Northern Hemisphere, with its initial records dating from the European Devonian. As to Gondwanan Paleozoic, to this moment, only Lycopodites amazonica Dolianiti had been reported for the Amazonian Middle Devonian (Curuá Group). Thus, the specimens reported in this study such as Lycopodites sp., coming from sedimentary rocks of the Itararé Subgroup, São Paulo State, and Lycopodites riograndensis sp. nov., collected in Rio Bonito Formation, Rio Grande do Sul, represent the oldest fertile forms recorded for Gondwana and the first ones to be described for the Paraná Basin. Its presence in layers, deposited after the end of the Neopaleozoic Glaciation, shows the appearance of new taxa in high latitudes, as well as the diversity of the lycopsids present in the Basin, previously indicated through the abundance of spores associated to the Class Lycopsida present in the palinomorphous assemblages.

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

scholarly journals Coupled stratigraphic and U-Pb zircon age constraints on the late Paleozoic icehouse-to-greenhouse turnover in south-central Gondwana

Geology ◽  
2019 ◽  
Vol 47 (12) ◽  
pp. 1146-1150 ◽  
Author(s):  
Neil Patrick Griffis ◽  
Isabel Patricia Montañez ◽  
Roland Mundil ◽  
Jon Richey ◽  
John Isbell ◽  
...  
Keyword(s):  
Ice Age ◽  
Late Paleozoic ◽  
Karoo Basin ◽  
Base Level ◽  
South Central ◽  
Paraná Basin ◽  
Forcing Mechanisms ◽  
Sequence Boundaries ◽  
Parana Basin ◽  
Order Sequence

Abstract The demise of the Late Paleozoic Ice Age has been hypothesized as diachronous, occurring first in western South America and progressing eastward across Africa and culminating in Australia over an ∼60 m.y. period, suggesting tectonic forcing mechanisms that operate on time scales of 106 yr or longer. We test this diachronous deglaciation hypothesis for southwestern and south-central Gondwana with new single crystal U-Pb zircon chemical abrasion thermal ionizing mass spectrometry (CA-TIMS) ages from volcaniclastic deposits in the Paraná (Brazil) and Karoo (South Africa) Basins that span the terminal deglaciation through the early postglacial period. Intrabasinal stratigraphic correlations permitted by the new high-resolution radioisotope ages indicate that deglaciation across the S to SE Paraná Basin was synchronous, with glaciation constrained to the Carboniferous. Cross-basin correlation reveals two additional glacial-deglacial cycles in the Karoo Basin after the terminal deglaciation in the Paraná Basin. South African glaciations were penecontemporaneous (within U-Pb age uncertainties) with third-order sequence boundaries (i.e., inferred base-level falls) in the Paraná Basin. Synchroneity between early Permian glacial-deglacial events in southwestern to south-central Gondwana and pCO2 fluctuations suggest a primary CO2 control on ice thresholds. The occurrence of renewed glaciation in the Karoo Basin, after terminal deglaciation in the Paraná Basin, reflects the secondary influences of regional paleogeography, topography, and moisture sources.

On the use of photothermal methods for thermal characterization of sedimentary rocks from the Paraná Basin in Brazil

2013 ◽  
Vol 43 ◽  
pp. 121-126 ◽  
Author(s):  
A.O. Guimarães ◽  
D.A. Viana ◽  
T.C. Cordeiro ◽  
J.A. Sampaio ◽  
E.C. da Silva ◽  
...  
Keyword(s):  
Sedimentary Rocks ◽  
Thermal Characterization ◽  
Paraná Basin ◽  
Photothermal Methods ◽  
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

Description of a new species of the Melanorivulus pictus species-group (Cyprinodontiformes: Rivulidae) from the Rio Paraná basin in Brazil

Zootaxa ◽  
2020 ◽  
Vol 4852 (1) ◽  
pp. 125-132
Author(s):  
ERIC VENTURINI YWAMOTO ◽  
DALTON TAVARES BRESSANE NIELSEN ◽  
CLAUDIO OLIVEIRA
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Rio Grande ◽  
Species Group ◽  
Sao Paulo ◽  
Paulo State ◽  
Paraná Basin ◽  
Parana Basin ◽  
Ventral Area ◽  
A New Species

A new species of the genus Melanorivulus belonging to the Melanorivulus pictus species group is herein described, from a tributary of the Rio Grande, Rio Paraná basin, São Paulo State, Brazil. The new species can be distinguished from all other species of the Melanorivulus pictus species group by the unique presence of sides of body of males light bluish gray with 10–12 oblique red bars, 8 of which chevron-like, bifurcated and complete, i.e., running from dorsum to ventral area, and 2–4 incomplete, with vertices of the chevron-like bars along midbody, pointing forward. Comments on the putative relationships of the new species, as well as concerning its conservation status, are presented. 

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

A Flora Dicroidium no Rio Grande do Sul: implicações bioestratigráficas

1999 ◽  
Vol 26 (1) ◽  
pp. 3
Author(s):  
MARGOT GUERRA SOMMER ◽  
MIRIAM CAZZULO KLEPZIG ◽  
ROBERTO IANNUZZI ◽  
LAUREN SALLY ALVES
Keyword(s):  
South Africa ◽  
Central Region ◽  
Middle Triassic ◽  
Rio Grande ◽  
The State ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin ◽  
Santa Maria

A Triassic taphoflora identified in the Central Region of the State of Rio Grande do Sul, southern Brazil, represents an important biostratigraphic stage in the paleofloristic succession of the Paraná Basin. This megafloristic association is composed of compressed leaves, fronds and seeds of a “Dicroidium Flora” and shows a predominance of the Dicroidium genus, with several species, and other important taxa like Neocalamites sp, Cladophlebis sp, Tetraptilon aff, heteromerum, Ginkgoites Antarctica, Sphenobaiera sp, Podozamites sp, Nilssonia sp, Pteruchus sp and Carpolithus sp. Taking into account the stratigraphical distribution of different species of the Dicroidium genus, a biostratigraphic framework was established. The biostratigraphical position of this Triassic flora was established by comparison with Triassic floras from Argentina, South Africa and Australasia. Considering that the recognition of this Dicroidium Flora was based on limited outcrops belonging to one lithostratiphic level (Santa Maria Formation – Passo das Tropas Facies), it was impossible to establish a formal biostratigraphic zonation. Instead, at present time, an informal floristic interval, named “Dicroidium odontopteroides Flora” is proposed (Late Anisian to Late Ladinian, Middle Triassic).

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