Palaeobotanical evidence of wildfires in the Late Palaeozoic of South America – Early Permian, Rio Bonito Formation, Paraná Basin, Rio Grande do Sul, Brazil

2008 ◽  
Vol 26 (4) ◽  
pp. 435-444 ◽  
Author(s):  
André Jasper ◽  
Dieter Uhl ◽  
Margot Guerra-Sommer ◽  
Volker Mosbrugger
Keyword(s):  
South America ◽  
Rio Grande ◽  
Early Permian ◽  
Rio Grande Do Sul ◽  
Late Palaeozoic ◽  
Paraná Basin ◽  
Parana Basin

Hepaticites iporangae n. sp., Rio Bonito Formation, Early Permian (Sakmarian), Paraná Basin, Brazil, Western Gondwana

2011 ◽  
Vol 85 (2) ◽  
pp. 360-368 ◽  
Author(s):  
Fresia Ricardi-Branco ◽  
Rafael Souza Faria ◽  
André Jasper ◽  
Margot Guerra-Sommer
Keyword(s):  
New Species ◽  
South America ◽  
Rio Grande ◽  
Climatic Conditions ◽  
Formal Description ◽  
Early Permian ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

The formal description of a liverwort from the Paraná Basin is presented. The fossil was found in the Rio Bonito Formation, Early Permian (Sakmarian), and is identified as a new species of the genus Hepaticites, named H. iporangae n. sp. The samples studied were collected from the macrofossil-rich roof-shale layer of the Quitéria Outcrop in the municipality of Encruzilhada do Sul, state of Rio Grande do Sul, Brazil. H. iporangae is one of the oldest liverworts reported from South America. The fossil described here provides more evidence of the relative diversity of liverworts in Paleozoic Gondwana despite the severe climatic conditions during the glaciations of the Permo-Carboniferous.

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).

Hepaticites iporangae Ricardi-Branco, Faria, Jasper, and Guerra-Sommer, 2011 from the early Permian of the Paraná Basin, Brazil, is not a liverwort but a tracheophyte

2016 ◽  
Vol 90 (4) ◽  
pp. 632-639 ◽  
Author(s):  
Dieter Uhl ◽  
André Jasper ◽  
Talyssa Valerius ◽  
Joseline Manfroi ◽  
Margot Guerra-Sommer ◽  
...  
Keyword(s):  
Rio Grande ◽  
Type Material ◽  
New Combination ◽  
Early Permian ◽  
Rio Grande Do Sul ◽  
New Material ◽  
Paraná Basin ◽  
Parana Basin

AbstractFrom new and more complete material, which includes frond fragments with casts of tracheid remains of the rachis, it can be demonstrated that the putative liverwort Hepaticites iporangae Ricardi-Branco, Faria, Jasper, and Guerra-Sommer, 2011, from the early Permian Rio Bonito Formation (Sakmarian) of the Paraná Basin, Brazil, is not a bryophyte but a tracheophyte. The new material was collected from the same locality and layer as the type material, in the Quitéria outcrop in the municipality of Encruzilhada do Sul, state of Rio Grande do Sul, Brazil. From the morphology of the deeply dissected pinnatifid pinnules with narrow laminar lobes, the taxon is provisionally reassigned to the genus Rhodeopteridium. Thus we propose the new combination ‘Rhodeopteridium’ iporangae new combination for this taxon. This new systematic interpretation contributes to our understanding of early liverworts (by removing Hepaticites iporangae as a possible taxon thereof) and clarifies an issue of diversity of the flora of the early Permian Rio Bonito Formation resulting from the original misidentification.

Depositional cyclicity and paleoecological variability in an outcrop of Rio Bonito formation, Early Permian, Paraná Basin, Rio Grande do Sul, Brazil

2006 ◽  
Vol 21 (3) ◽  
pp. 276-293 ◽  
Author(s):  
André Jasper ◽  
Rualdo Menegat ◽  
Margot Guerra-Sommer ◽  
Miriam Cazzulo-Klepzig ◽  
Paulo Alves de Souza
Keyword(s):  
Rio Grande ◽  
Early Permian ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals The Artinskian Siderópolis Member macroflora, Rio Bonito Formation and its stratigraphical correlation with other early Permian macrofloras of Paraná Basin, Brazil

2016 ◽  
Vol 16 (4) ◽  
pp. 65
Author(s):  
Mary Elizabeth Cerruti Bernardes-de-Oliveira ◽  
Sandra Eiko Mune ◽  
Maria Judite Garcia ◽  
Roberto Iannuzzi ◽  
Margot Guerra-Sommer ◽  
...  
Keyword(s):  
Rio Grande ◽  
Early Permian ◽  
Rio Grande Do Sul ◽  
Santa Catarina ◽  
Paraná Basin ◽  
Parana Basin

Apresenta-se aqui uma síntese da composição da paleoflora preservada em siltitos argilosos do Membro Siderópolis, Formação Rio Bonito tendo como objetivo estabelecer comparações fitoestratigráficas com outras paleofloras neopensilvanianas e cisuralianas da Bacia do Paraná. A Formação Rio Bonito, a mais importante das unidades litoestratigráficas portadoras de carvão da Bacia do Paraná, pertence à supersequência Gondwana I (Pensilvaniano-Eotriássico). A paleoflora Siderópolis ocorre nas camadas de carvão mais superiores da Formação Rio Bonito na região carvoeira de Santa Catarina, em quatro áreas distintas do Estado de Santa Catarina: Lauro Muller, Criciúma, São Marcos e Treviso. Na paleoflora, as folhas de glossopterídeas predominam com um evidente domínio do gênero Glossopteris sobre Gangamopteris, seguido por folhas cordaitaleanas (Noeggerathiopsis) e sementes (Cordaicarpus, Samaropsis, Cornucarpus). Frondes estéreis são comuns havendo poucas férteis (Sphenopteris, Pecopteris, Ponsotheca, Notoangaridium). Estruturas reprodutivas pteridospérmicas  (Arberia, Arberiopsis, Ottokaria) e ramos de coníferas (Brasilocladus, Buriadia) são raros. Em relação a outras paleofloras da bacia, a de Siderópolis distingue-se por apresentar diversidade mais alta e muitos táxons exclusivos mostrando apenas umas poucas semelhanças com algumas paleofloras registradas no Rio Grande do Sul, ocorrendo em afloramentos do Rio Bonito tais como Morro do Papaléo (porção superior) e Quitéria. Essas diferenças podem refletir uma posição estratigráfica superior, mas pode também indicar diferenças em condições de sedimentação e / ou paleoecológicas.

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
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