Results 1 to 10 of about 14,273,788 (168)

Latest Cretaceous megaraptorid theropod dinosaur sheds light on megaraptoran evolution and palaeobiology [PDF]

Nature Communications
Recent fossil discoveries have cast considerable light on the palaeobiology of Megaraptora, a group of large-clawed carnivorous theropod dinosaurs known from Cretaceous deposits in Asia, Australia, and especially South America.
Lucio M. Ibiricu, Matthew C. Lamanna, Bruno N. Alvarez, Ignacio A. Cerda, Julieta L. Caglianone, Noelia V. Cardozo, Marcelo Luna, Rubén D. Martínez   +7 more
doaj   +3 more sources

Sandstone petrography and provenance of the Chubut Group (Cretaceous) in the Cañadón Matasiete (Golfo San Jorge Basin, central Patagonia): Implications for basin evolution and alluvial organization [PDF]

Journal of South American Earth Sciences, 2020
Abstract Sandstone petrographic data have been used to investigate the provenance of the Matasiete, Pozo D-129, and Castillo formations (Chubut Group) in the Canadon Matasiete, San Bernardo Fold Belt at Golfo San Jorge Basin, Argentina. Available petrographical data provides evidence of several distinctive volcanic source areas, with minor ...
Olazábal, Sabrina X., Tunik, Maisa A., Paredes, José M.   +2 more
openaire   +2 more sources

A new lizard species of the Liolaemus kingii group (Squamata: Liolaemidae) from northwestern Chubut province (Argentina)

Zootaxa, 2023
We describe Liolaemus attenboroughi sp. nov., a lizard distributed in the northwestern Patagonian Steppe of Chubut province (Argentina) previously confused with L. kingii (Bell 1843). Recent studies based on molecular evidence supports its evolutionary independence.
KEVIN I. SÁNCHEZ, MARIANA MORANDO, LUCIANO J. AVILA   +2 more
openaire   +4 more sources

Early angiosperm fossil leaves in Chubut Group, Cretaceous, Argentina [PDF]

The Paleontological Society Special Publications, 1992
The oldest angiosperm leaves from Patagonia were reported from Baquero Formation (Barremian-Aptian) in a mesofitic flora of more than one hundred gymnosperm and fern species. The next younger records are from the Chubut Group, a thick assemblage of pyroclastic sediments, with sand and conglomerate facies and frequent paleosols.
Edgardo J. Romero, Ricardo Palma
openaire   +2 more sources

THE ROLE OF TELOGENETIC INJECTION OF MAGMATICALLY DERIVED CO₂IN THE FORMATION OF DAWSONITE FROM THE CASTILLO FORMATION, CHUBUT GROUP, PATAGONIA, ARGENTINA [PDF]

The Canadian Mineralogist, 2014
We report the occurrence of dawsonite, NaAlCO 3 (OH) 2 , in volcaniclastic rocks of the Albian hydrocarbon reservoir Castillo Formation, Golfo San Jorge Basin, neighboring the Canadon Asfalto Basin in Patagonia; this is the first known occurrence in Argentina.
Comerio, Marcos, Morosi, Martin Eduardo, Tunik, Maisa Andrea, Paredes, José Matildo, Zalba, Patricia Eugenia   +4 more
openaire   +4 more sources

Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin

Tectonophysics, 2015
Abstract The Central Patagonia is characterized by prominent continental deposits that belong to the Cretaceous Chubut Group Basin, whose tectonic setting remains controversial. It has been interpreted as a foreland basin, an extensional basin and even as a sag stage of a rift event. Related deposits outcrop as part of the Patagonian broken foreland,
Gianni, Guido Martin, Navarrete Granzotto, César Rodrigo, Orts, Darío Leandro, Tobal, Jonathan Elías, Folguera Telichevsky, Andres, Gimenez, Mario Ernesto   +5 more
openaire   +3 more sources

The first crocodyliform from the Chubut Group (Chubut Province, Argentina) and its phylogenetic position within basal Mesoeucrocodylia

Cretaceous Research, 2009
Fil: Leardi, Juan Martin. Consejo Nacional de Investigaciones Cientificas y Tecnicas; Argentina. Universidad de Buenos Aires. Facultad de Cs.exactas y Naturales. Departamento de Geologia.
Leardi, Juan Martín, Pol, Diego
openaire   +3 more sources

A brachiosaurid sauropod from the Late Jurassic Cañadón Calcáreo Formation of Chubut, Argentina [PDF]

Fossil Record, 2006
Fragmentary sauropod remains from the Late Jurassic (Tithonian) Cañadón Calcáreo Formation of Chubut, Argentinean Patagonia, are derived from a taxon of large size, but with very slender forelimbs.
O. W. M. Rauhut
doaj   +6 more sources

Petrology of continental pyroclastic and epiclastic sequences in the Chubut Group (Cretaceous): Los Altares-Las Plumas area, Chubut, Patagonia Argentina

Revista geológica de Chile, 2000
Las sucesiones volcaniclasticas de la Formacion Cerro Barcino (Grupo Chubut, Aptiano-Cenomaniano), afloran en ambas margenes del rio Chubut con 200 m de espesor. Los miembros medio: Cerro Castano (sineruptivo, 90 m) y superior, Las Plumas (intereruptivo, 110 m) son descritos con el mapeo fotogeologico, estudios de campo y laboratorio (mineralogico ...
Manassero, Marcelo, Zalba, Patricia E., Andreis, Renato R., Morosi, Martín   +3 more
openaire   +5 more sources

Cenomanian-? early Turonian minimum age of the Chubut Group, Argentina: SHRIMP U–Pb geochronology

Journal of South American Earth Sciences, 2014
Abstract Four new SHRIMP U–Pb zircon ages older than 93 Ma from samples of the two uppermost formations accumulated in two different depocenters (Golfo de San Jorge and Canadon Asfalto basins) of the Chubut Group in central Argentinean Patagonia, establish a pre-late Cenomanian-? early Turonian age for the group.
Suarez, Manuel, Marquez, Marcelo, de la Cruz, Rita, Navarrete, Cesar, Fanning, Christopher   +4 more
openaire   +7 more sources