Vertebrate dinoturbation from the Caturrita Formation (Late Triassic, Paraná Basin), Rio Grande do Sul State, Brazil

2007 ◽  
Vol 11 (3) ◽  
pp. 303-310 ◽  
Author(s):  
Rafael Costa Da Silva ◽  
Ismar De Souza Carvalho ◽  
Cibele Schwanke
Keyword(s):  
Rio Grande ◽  
Late Triassic ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals Dispersal Syndromes of fossil Seeds from the Lower Permian of Paraná Basin, Rio Grande do Sul, Brazil

2012 ◽  
Vol 84 (1) ◽  
pp. 43-68 ◽  
Author(s):  
Juliane M. Souza ◽  
Roberto Iannuzzi
Keyword(s):  
Rio Grande ◽  
Water Bodies ◽  
Lower Permian ◽  
Rio Grande Do Sul ◽  
Dispersal Syndrome ◽  
Dispersal Syndromes ◽  
Pioneer Plants ◽  
Paraná Basin ◽  
Successional Species ◽  
Parana Basin

The morphological analysis of seeds has been an important subject in modern ecological studies, once it provides evidence about the biology and adaptations of the parent plant. However, this kind of study has been restricted to the ecology of modern plants and is rarely used in interpretations of Paleozoic data. From the understanding of dispersal syndromes analysis as an important tool to paleoecological reconstruction, this study provides a first approach using this tool with seeds from the Lower Permian strata of southern Paraná Basin in Rio Grande do Sul. Based on previously classified seeds and using their biological and taphonomic data, the syndrome of dispersal was interpreted, and their placement in successional groups (pioneer, early-successional and later-successional) was suggested. Seven morphospecies were analyzed: Samaropsis gigas, representing a later-successional species living in water bodies with hydrochory as its dispersal syndrome; Samaropsis kurtzii, typical of early-successional species showing anemochory as its dispersal syndrome and living in distal areas in relation to water bodies; Samaropsis aff. S. millaniana, Cordaicarpus aff. C. brasilianus, Cordaicarpus cerronegrensis and Cordaicarpus truncata have typical characteristics of pioneer plants, exhibiting barochory as their primary dispersal syndrome with other syndromes associated.

scholarly journals Coricladus quiteriensis gen. et sp. nov., a new conifer in Southern-Brazil Gondwana (Lower Permian, Paraná Basin)

2005 ◽  
Vol 77 (1) ◽  
pp. 157-168 ◽  
Author(s):  
André Jasper ◽  
Fresia Ricardi-Branco ◽  
Margot Guerra-Sommer
Keyword(s):  
Rio Grande ◽  
Lower Permian ◽  
Central Vein ◽  
New Taxon ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin

A new taxon of conifers (Coricladus quiteriensis) is described based on megafloristic remains from the roofshale level at the Quitéria Outcrop (Rio Bonito Formation - Lower Permian - Southern Paraná Basin - Rio Grande do Sul - Brazil). This megafloristic community is included in the Botrychiopsis Zone - Botrychiopsis valida Sub-Zone (Kungurian/Roadian). The assemblage, preserved as impressions, do not present remains of epidermic characters, and is composed mainly of isolated vegetative branches with spirally disposed acicular leaves, presenting a conspicuous central vein and also isolated fertile branches with sparse and irregular leaves and terminal cones. Leafless principal branches, organically connected with sterile and fertile branches, are rare. Reproductive feminine scales, disposed in a plane, are organized in lax terminal cones on branches, composed by 4 (four) distal ovuliferous scales, and 8 (eight) elliptical-elongated anatropous seeds. Paleoecological data pointed out to a mesophylous to higrophylous habitat in swampy environments.

Extending the database of Permian palaeo-wildfire on Gondwana: Charcoal remains from the Rio do Rasto Formation (Paraná Basin), Middle Permian, Rio Grande do Sul State, Brazil

2015 ◽  
Vol 436 ◽  
pp. 77-84 ◽  
Author(s):  
Joseline Manfroi ◽  
Dieter Uhl ◽  
Margot Guerra-Sommer ◽  
Heitor Francischini ◽  
Agustín Guillermo Martinelli ◽  
...  
Keyword(s):  
Rio Grande ◽  
Middle Permian ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals Permian Insects from Paraná Basin, South Brazil, IV Coleoptera

1987 ◽  
Vol 19 (19) ◽  
pp. 5 ◽  
Author(s):  
IRAJÁ DAMIANI PINTO
Keyword(s):  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin ◽  
South Brazil

São descritos dois Coleopteros (Insecta) do Permiano: Kaltanicupes ponomarenkoi Pinto, sp. nov. e Protocupoides rohdendorfi Pinto, sp. nov. da família Permocupedidae. Eles foram encontrado na Formação Irati, associados a outros insetos, crustáceos, escamas de peixes e plantas no Estado do Rio Grande do Sul, sul do Brasil.

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).

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 remarkable mass-assemblage of lycopsid remains from the Rio Bonito Formation, lower Permian of the Paraná Basin, Rio Grande do Sul, Brazil

2018 ◽  
Vol 98 (3) ◽  
pp. 369-384 ◽  
Author(s):  
Rafael Spiekermann ◽  
Dieter Uhl ◽  
José Rafael Wanderley Benício ◽  
Margot Guerra-Sommer ◽  
André Jasper
Keyword(s):  
Rio Grande ◽  
Lower Permian ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals Progress on the palynostratigraphy of the Permian strata in Rio Grande do Sul State, Paraná Basin, Brazil

2005 ◽  
Vol 77 (2) ◽  
pp. 353-365 ◽  
Author(s):  
Paulo A. Souza ◽  
Marleni Marques-Toigo
Keyword(s):  
Rio Grande ◽  
Middle Permian ◽  
Early Permian ◽  
Rio Grande Do Sul ◽  
Reference Sections ◽  
New Material ◽  
Paraná Basin ◽  
Parana Basin

A review of published papers and results of analysis of new material have allowed improvements on the palynostratigraphy of the Permian strata of the Paraná Basin in Rio Grande do Sul State. Based on first and last occurrences of certain species of pollen taxa, two palynozones are formalized, these are the Vittatina costabilis and Lueckisporites virkkiae Interval Zones, in ascending order. The Vittatina costabilis Interval Zone is subdivided into two units, in ascending order the Protohaploxypinus goraiensis and the Hamiapollenites karrooensis Subzones, and is recognized from the glacial (Itararé Group) and post-glacial sequence (Rio Bonito Formation and the base of the Palermo Formation). The Lueckisporites virkkiae Interval Zone occurs from the uppermost Rio Bonito Formation, through the Palermo and Irati formations, and into the Serra Alta and Teresina formations. The main characteristics and reference sections are established, as well as additional criteria to recognize biostratigraphical units, in accordance with the International Stratigraphic Guide. Palynostratigraphical correlation suggests that the Vittatina costabilis Zone concerns the Early Permian (early Cisuralian), while the Lueckisporites virkkiae is regarded as late Early Permian to early Middle Permian (late Cisularian to early Guadalupian).

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