Results 1 to 10 of about 8,864 (171)

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   +2 more sources

Exploring the effects of climatic and environmental heterogeneity on the spatial activity of Patagonian bats [PDF]

BMC Ecology and Evolution
Background The Patagonian region hosts endemic bat species and represents the southernmost distribution limit for several vespertilionids and molossids species. In cold temperate regions, insectivorous bats are more active during summer.
Analía Laura Giménez, Marta Gladys Grech, Óscar De Paz   +2 more
doaj   +2 more sources

Stratigraphy of the Chubut Group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture

Latin American Journal of Sedimentology and Basin Analysis
The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation ...
José Matildo Paredes, Nicolás Foix, José O. Allard, Sabrina Lizzoli, Sabrina X. Olazábal, Maisa A. Tunik   +5 more
doaj   +3 more sources

Association of depressive symptoms with incidence and mortality rates of COVID-19 over 2 years among healthcare workers in 20 countries: multi-country serial cross-sectional study [PDF]

BMC Medicine
Background Long-term deterioration in the mental health of healthcare workers (HCWs) has been reported during and after the COVID-19 pandemic. Determining the impact of COVID-19 incidence and mortality rates on the mental health of HCWs is essential to ...
Hiroki Asaoka, Kazuhiro Watanabe, Yuki Miyamoto, Alexandra Restrepo-Henao, Els van der Ven, Maria Francesca Moro, Lubna A. Alnasser, Olatunde Ayinde, Arin A. Balalian, Armando Basagoitia, Sol Durand-Arias, Mehmet Eskin, Eduardo Fernández-Jiménez, Freytes Frey Marcela Ines, Luis Giménez, Hans W. Hoek, Rodrigo Ezequiel Jaldo, Jutta Lindert, Humberto Maldonado, Gonzalo Martínez-Alés, Roberto Mediavilla, Clare McCormack, Javier Narvaez, Uta Ouali, Aida Barrera-Perez, Erwin Calgua-Guerra, Jorge Ramírez, Ana María Rodríguez, Dominika Seblova, Andrea Tenorio Correia da Silva, Linda Valeri, Oye Gureje, Dinarte Ballester, Mauro Giovanni Carta, Anna Isahakyan, Amira Jamoussi, Jana Seblova, Maria Teresa Solis-Soto, Ruben Alvarado, Ezra Susser, Franco Mascayano, Daisuke Nishi, HEROES group   +42 more
doaj   +2 more sources

Insight into cretaceous floras: a synthesis from plant microfossils of the Chubut Group in the Golfo San Jorge Basin

Latin American Journal of Sedimentology and Basin Analysis
This study provides a comprehensive review of the key advances in micropaleontological research of the Chubut Group in the Golfo San Jorge Basin during the twenty-first century, with a particular emphasis on the plant microfossil record of two critical ...
Andrea De Sosa Tomas, Patricia Vallati
doaj   +1 more source

Análisis composicional y procedencia de la Formación Peñas Coloradas, Grupo Río Chico (Paleoceno Superior-Eoceno?), en la región oriental de la cuenca del Golfo San Jorge, Chubut, Argentina Compositional analysis and origin of the Peñas Coloradas Formation, Río Chico Group (Late Paleocene-Eocene?), in the eastern region of the Golfo de San Jorge basin, Chubut, Argentina

Latin American Journal of Sedimentology and Basin Analysis, 2006
Se estudian preliminarmente, desde el punto de vista composicional, niveles arenosos de la Formación Peñas Coloradas (unidad inferior del Grupo Río Chico) del Paleoceno superior-Eoceno?, en los perfiles de Punta Peligro, Estancia La Rosa y Cañadón Hondo,
María Sol Raigemborn
doaj   +1 more source

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   +5 more sources

TURTLES FROM THE MATA AMARILLA FORMATION (CENOMANIAN), SANTA CRUZ, ARGENTINA: THE SOUTHERMOST RECORD OF PROCHELIDELLA SPP. (PLEURODIRA: CHELIDAE)

Publicación Electrónica de la Asociación Paleontológica Argentina, 2022
The fossil record of Cretaceous turtles in Santa Cruz Province is scarce. Turtles have been reported from the Mata Amarilla Formation (Cenomanian), the Cerro Fortaleza Formation (Campanian–Maastrichtian), and the Chorrillo Formation (early Maastrichtian).
Juliana Sterli, Marcelo Saúl de la Fuente, Ignacio Jorge Maniel, Augusto Nicolás Varela, Daniel Gustavo Poiré   +4 more
doaj   +1 more source

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   +1 more source

http://www.app.pan.pl/article/item/app003732017.html [PDF]

Acta Palaeontologica Polonica, 2017
The Interatheriinae (Notoungulata, Interatheriidae) from the Collón Curá Formation (Colloncuran South American Land Mammal Age, SALMA) are revised here, based on old and new collections from western Neuquén, Río Negro, and Chubut provinces where this ...
Bárbara Vera, Marcelo Reguero, Laureano González-Ruiz   +2 more
doaj   +1 more source