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Sergio F. Vizcaino,M. Susana Bargo,M. Encarnación Pérez,Inés Aramendía,José I. Cuitiño,Eduardo S. Monsalvo,Evangelos Vlachos,Jorge I. Noriega,Richard F. Kay
Pág. 382 - 422
The early-middle Miocene continental Cerro Boleadoras Formation (CBF) crops out in the area of Cerro Boleadoras and Cerro Plomo on the western slope of the Meseta del Lago Buenos Aires, northwestern Santa Cruz Province, Argentina. The lower levels of the...
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Augusto Nicolás Varela, María Sol Raigemborn, Patricio Emmanuel Santamarina, Sabrina Lizzoli, Thierry Adatte and Ulrich Heimhofer
The Cenomanian Mata Amarilla Formation (MAF) in southern Patagonia (~55° S paleolatitude, Austral-Magallanes Basin, Argentina) is composed mainly of stacked fluvial deposits with intercalated paleosols, which document Cenomanian environments at high-pale...
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José I. Cuitiño,Sergio F. Vizcaíno,M. Susana Bargo,Inés Aramendía
Pág. 383 - 420
Lago Posadas is located at the foot of the Southern Patagonian Andes, in southwestern Argentina, where the early Miocene Santa Cruz Formation (SCF) shows thick and laterally continuous exposures. This region has been scarcely explored for fossil vertebra...
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Juan Pablo Pérez Panera
Pág. 397 - 402
Calcareous nannofossil biostratigraphic investigations of Cretaceous sediments within the southern high latitude Austral Basin, Argentina, have revealed the presence of a fragment of a silicoflagellate possibly belonging to the species Variramus aculeife...
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José Ignacio Cuitiño,Roberto Ventura Santos,Pablo Joaquin Alonso Muruaga,Roberto A. Scasso
Pág. 364 - 385
Early Miocene shallow marine deposits in the region of Lago Posadas-Meseta Belgrano (Argentina) represent part of the ?Patagoniense? transgression, an Atlantic marine incursion that flooded large part of Patagonia, including the Austral (foreland) Basin ...
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Rodrigo A. Otero,Sergio Soto-Acuña,Christian Salazar S.,José Luis Oyarzún
Pág. 237 - 267
Several Upper Cretaceous plesiosaur specimens recovered from southernmost Chile are described here. These were collected from upper levels of the Dorotea Formation exposed on three different localities (Sierra Baguales, Cerro Castillo, and Dumestre). The...
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Juan Pablo Pérez Panera
Pág. 117 - 140
Calcareous nannofossils from two boreholes (Campo Bola and Sur Río Chico) in the subsurface of eastern Austral Basin, Santa Cruz Province, Argentina, allowed the identification of Early to Middle Paleocene, Early to Middle Eocene and Late Eocene to Early...
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J. Enrique Bostelmann,Jacobous P. Le Roux,Ana Vásquez,Néstor M. Gutiérrez,José Luis Oyarzún,Catalina Carreño,Teresa Torres,Rodrigo Otero,Andrea Llanos,C. Mark Fanning,Francisco Hervé
Pág. 458 - 489
A succession of marine and continental strata on the southern flank of Cerro Cono in the Sierra Baguales, northeast of Torres del Paine, can be correlated with stratigraphic units exposed along the southern border of the Lago Argentino region in Santa Cr...
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Rosa Carrillo-Berumen,Mirta E. Quattrocchio,Javier Helenes
Pág. 539 - 560
The Paleogene section of Punta Prat, Chile is located at 53°10?S-71°20?W in southern Magallanes-Austral Basin, includes Chorrillo Chico and Agua Fresca Formations. Both units contain a palynological assemblage composed of marine and continental palynomor...
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Augusto N. Varela,Daniel G. Poiré,Thomas Martin,Axel Gerdes,Francisco J. Goin,Javier N. Gelfo,Simone Hoffmann
Pág. 359 - 379
Despite the abundant fossil content of the Mata Amarilla Formation (Southern Patagonia, Santa Cruz Province, Argentina), its age has always generated a considerable number of questions and debates. The chronological data provided by invertebrates, dinosa...
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