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Ascocerid cephalopods from the Hirnantian?-Llandovery stages of the southern Paraná Basin (Paraguay, South America): First record from high paleolatitudes
(Paleontological Society, 2019-01)
Ascocerid cephalopods are described for the first time from high paleolatitudes of Gondwana. Studied material was collected from the Hirnantian?-Llandovery strata of the Eusebio Ayala and Vargas Peña formations, Paraná ...
Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence
(Pergamon-Elsevier Science Ltd, 2007-01)
Fossil content (vertebrate paleofauna and palynology) indicates that the sediments of the Solimões Formation in Acre (SW Brazilian Amazonia) are continental, having been deposited by avulsive fluvial belts in a ...
Correlation of marine beds based on Sr- and Ar-date determinations and faunal affinities across the Paleogene/Neogene boundary in southern Patagonia, Argentina
(Pergamon-Elsevier Science Ltd, 2008-09-04)
The San Julián and Monte León formations ("Patagonian") are exposed along the Atlantic coast of Patagonia, whereas in the west equivalent rocks are known as Centinela Formation. Sixteen 87Sr/86Sr measurements on the oyster ...
The South American and Antarctic Peninsula fossil record of Salviniales (water ferns): Its implication for understanding their evolution and past distribution
(Elsevier Science, 2021-12)
We compiled the fossil record of the heterosporous water ferns (Salviniales) including macro- and microfossils from South America and the Antarctic Peninsula. Both extant families, Marsileaceae and Salviniaceae, are well ...
Paleomagnetic confirmation of the “unorthodox” configuration of Atlantica between 2.1 and 2.0 Ga
(Elsevier Science, 2019-11)
The paleogeographic evolution of the Río de la Plata Craton during the Precambrian poses important questions regarding its participation in the Atlantica continent and Columbia supercontinent. With the aim of contributing ...
Reconstructing paleoenvironmental conditions through integration of paleogeography, stratigraphy, sedimentology, mineralogy, and stable isotope data of lacustrine carbonates: an example from early Middle Triassic strata of southwest Gondwana, Cuyana Rift, Argentina
(Springer Nature Switzerland AG, 2021)
Reconstructing continental paleoenvironmental conditions (temperature, precipitation, hydrology, and hydrography) is essential for constraining the infuences on terrestrial ecosystems, sediment and solute yields to the ...
Paleomagnetic confirmation of the “unorthodox” configuration of Atlantica between 2.1 and 2.0 Ga
(Elsevier Science, 2019-11)
The paleogeographic evolution of the Río de la Plata Craton during the Precambrian poses important questions regarding its participation in the Atlantica continent and Columbia supercontinent. With the aim of contributing ...
The Early Paleozoic history of the Cuyania (greater Precordillera) terrane of western Argentina: evidence from geochronology of detrital zircons from Middle Cambrian sandstones
(Universidad de Barcelona, 2005-01)
U-Pb geochronology of large detrital zircons populations is a powerful tool for interpreting sandstone provenance. Here, it is applied to three Middle Cambrian sandstones from the Precordillera of Argentina with the purpose ...
The Lower Cretaceous Centenario Formation: A subsurface unit in the northeastern border of the Neuquén Basin revisited
(Pergamon-Elsevier Science Ltd, 2019-06)
The Centenario Formation in the NE region of the Neuquén Basin is a lithostratigraphic unit that has been historically ascribed to continental deposits, being time-equivalent of the Agrio Formation in the basin border. The ...
Phylogeographically concordant intraspecific cpDNA divergence in sympatric Nothofagus. How deep can it be?
(Wiley Blackwell Publishing, Inc, 2012-01)
Here, we performed phylogenetic analyses and estimated the divergence times on mostly sympatric populations of five species within subgenus Nothofagus. We aimed to investigate whether phylogenetic relationships by nuclear ...