scholarly journals Epidermal morphology of the cordaitalean leaf Noeggerathiopsis brasiliensis nom. nov. from the southern Paraná Basin (Lower Permian, Rio Bonito Formation) and paleoenvironmental considerations

2019 ◽  
Vol 49 (2) ◽  
Author(s):  
Isabela Degani-Schmidt ◽  
Margot Guerra-Sommer
Keyword(s):  
Lower Permian ◽  
Paraná Basin ◽  
Parana Basin ◽  
Epidermal Morphology

scholarly journals Charcoal remains from a tonstein layer in the Faxinal Coalfield, Lower Permian, southern Paraná Basin, Brazil

2011 ◽  
Vol 83 (2) ◽  
pp. 471-481 ◽  
Author(s):  
André Jasper ◽  
Dieter Uhl ◽  
Margot Guerra-Sommer ◽  
Abdalla M. B Abu Hamad ◽  
Neli T. G Machado
Keyword(s):  
Lower Permian ◽  
Published Data ◽  
Early Permian ◽  
Ash Fall ◽  
Potential Source ◽  
Volcanic Events ◽  
Paraná Basin ◽  
Surrounding Areas ◽  
Parana Basin

Fossil charcoal has been discovered in the Faxinal Coalfield, Early Permian, Rio Bonito Formation, in the southernmost portion of the Paraná Basin, Brazil. Three types of pycnoxylic gymnosperm woods recovered from a single tonstein layer are described and confirm the occurrence of paleowildfire in this area. A decrease of the charcoal concentration from the base to the top within the tonstein layer indicates that the amount of fuel declined during the deposition probably due to the consumption of vegetation by the fire. The presence of inertinite in coals overlying and underlying the tonstein layer indicates that fire-events were not restricted to the ash fall interval. The integration of the new data presented in the current study with previously published data for the Faxinal Coalfield demonstrates that volcanic events that occurred in the surrounding areas can be identified as one potential source of ignition for the wildfires. The presence of charcoal in Permian sediments associated with coal levels at different localities demonstrates that wildfires have been relatively common events in the peat-forming environments in which the coal formation took place in the Paraná 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.

scholarly journals OIL GENERATION POTENTIAL ASSESSMENT AND PALEOENVIRONMENTAL INTERPRETATION OF IRATI FORMATION (LOWER PERMIAN) IN NORTHWESTERN OF PARANÁ BASIN (BRAZIL)

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Rosane Dos Santos Euzébio ◽  
Darlly Erika Silva dos Reis ◽  
Marco António Ruivo de Castro e Brito ◽  
Sérgio Bergamaschi ◽  
Maria Virgínia Alves Martins Alves Martins ◽  
...  
Keyword(s):  
Lower Permian ◽  
Irati Formation ◽  
Oil Generation ◽  
Paleoenvironmental Interpretation ◽  
Paraná Basin ◽  
Parana Basin

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
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