PORE SYSTEM QUANTIFICATION AND CHARACTERIZATION IN VOLCANIC ROCKS: A CASE STUDY FROM THE LOWER CRETACEOUS SERRA GERAL GROUP, PARANÁ BASIN, SOUTHERN BRAZIL

2019 ◽  
Vol 42 (3) ◽  
pp. 301-317 ◽  
Author(s):  
M. Becker ◽  
E. F. Lima ◽  
B. L. Waichel ◽  
I. F. Mantovani
Keyword(s):  
Lower Cretaceous ◽  
Volcanic Rocks ◽  
Southern Brazil ◽  
Pore System ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals A new Xenacanthiformes shark (Chondrichthyes, Elasmobranchii) from the Late Paleozoic Rio do Rasto Formation (Paraná Basin), Southern Brazil

2014 ◽  
Vol 86 (1) ◽  
pp. 135-145 ◽  
Author(s):  
VICTOR E. PAULIV ◽  
ELISEU V. DIAS ◽  
FERNANDO A. SEDOR ◽  
ANA MARIA RIBEIRO
Keyword(s):  
New Species ◽  
Longitudinal Section ◽  
Optical Microscope ◽  
Late Paleozoic ◽  
Southern Brazil ◽  
Fossil Assemblage ◽  
Transversal Section ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

The Brazilian records on Xenacanthiformes include teeth and cephalic spines from the Parnaíba, Amazonas and Paraná basins. This work describes a new species of Xenacanthidae, collected in an outcrop of Serrinha Member of Rio do Rasto Formation (Wordian to Wuchiapingian), Paraná Basin, municipality of Jacarezinho, State of Paraná. The teeth of the new species are two or three-cuspidated and the aboral surface show a smooth concavity and one rounded basal tubercle. The coronal surface presents one semi-spherical and subcircular coronal button, and also two lateral main cusps and one central (when present) with less than one fifth of the size of the lateral cusps in the labial portion. The lateral cusps are asymmetric or symmetric, rounded in transversal section, lanceolate in longitudinal section, devoid of lateral carinae and lateral serrations, and with few smooth cristae of enameloid. In optical microscope the teeth show a trabecular dentine (osteodentine) base, while the cusps are composed by orthodentine, and the pulp cavities are non-obliterated by trabecular dentine. The fossil assemblage in the same stratigraphical level and in the whole Rio do Rasto Formation indicates another freshwater record for xenacanthid sharks.

scholarly journals Ichnological Research of Silurian–Devonian Strata and the Zoophycos Distribution in the Paraná Basin

Terr Plural ◽  
2021 ◽  
Vol 15 ◽  
pp. e2118495
Author(s):  
Kevin William Richter ◽  
◽  
Elvio Pinto Bosetti ◽  
Daniel Sedorko ◽  
◽  
...  
Keyword(s):  
Depositional Environments ◽  
Southern Brazil ◽  
Ecological Strategies ◽  
Lower Paleozoic ◽  
Paraná Basin ◽  
Parana Basin

The Silurian–Devonian strata of the Paraná Basin (southern Brazil) have a wide variety of ichnofossils. The first records date from the beginning of the last century, with pioneering studies in 1912 addressing the Furnas and Ponta Grossa formations. Significant advances in the ichnological knowledge of these units occurred between the 1980s and 1990s, emphasizing ichnotaxonomic characterizations. These ichnological studies were important for better understanding and describing the main depositional environments, ecological strategies, biostratigraphy, and the relation with the preserved paleofauna. In this contribution, we review this knowledge and analyze the distribution and paleoecological significance of Zoophycos, the most remarkable ichnotaxon in the Lower Paleozoic beds of the Paraná Basin.

New Late Pennsylvanian Paleomagnetic Results From Paraná Basin (Southern Brazil): Is the Recent Giant Gaussian Process Model Valid for the Kiaman Superchron?

2019 ◽  
Vol 124 (7) ◽  
pp. 6223-6242 ◽  
Author(s):  
Daniele Brandt ◽  
Marcia Ernesto ◽  
Catherine Constable ◽  
Daniel Ribeiro Franco ◽  
Luiz Carlos Weinschutz ◽  
...  
Keyword(s):  
Gaussian Process ◽  
Process Model ◽  
Southern Brazil ◽  
Gaussian Process Model ◽  
Paraná Basin ◽  
Parana Basin

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.

The Triassic taphoflora of the Paraná Basin, southern Brazil: a biostratigraphical approach

1999 ◽  
Vol 29 (1) ◽  
pp. 243-255 ◽  
Author(s):  
M. Guerra-Sommer ◽  
M. Cazzulo-Klepzig ◽  
R. Iannuzzi
Keyword(s):  
Southern Brazil ◽  
Paraná Basin ◽  
Parana Basin
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