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Mostrando ítems 21-28 de 28
A new temnospondyl record from the Upper Triassic of Argentina
(Asociación Paleontológica Argentina, 2005-12)
The Brachyopoidea is a group of Mesozoic temnospondyls with flat, parabolic skulls that were recently reviewed and considered to include Brachyopoidea and Chigutisauridae (Warren and Marsicano, 2000; Yates and Warren, 2000, ...
The influence of volcanic activity and trophic state on plant taphonomic processes in Triassic lacustrine-deltaic systems of western Gondwana
(Wiley Blackwell Publishing, Inc, 2021-03)
The impact of volcanic activity and trophic state on the preservation of plant remains from two Triassic palaeolake deposits in western Gondwana is investigated. Six taphonomic modes are identified for the Potrerillos–Cacheuta ...
Mineralogical and geochemical analysis of sodium bentonites in continental settings: The Uspallata Group (Triassic) of the Cuyana Basin, Mendoza province, Argentina
(Elsevier Science, 2020-10)
The Triassic Uspallata Group of the Cuyana rift Basin is characterized by continental deposits including alluvial, fluvial and lacustrine systems, mainly composed of volcaniclastic (reworked) and pyroclastic sediments. The ...
Vertebrate coprolites from the Triassic of Argentina (Cuyana Basin)Coprolitos de vertebrados del Triásico de Argentina (Cuenca Cuyana)
(Asociación Paleontológica Argentina, 2004-12)
Abundantes restos de coprolitos de vertebrados coleccionados de las formaciones triásicas de Potrerillos, Cacheuta y Río Blanco (Cuenca Cuyana) son analizados. El material estudiado incluye tanto especímenes originalmente ...
Darriwilian (Middle ordovician) conodonts and graptolites from the cerro la chilca section, central precordillera, ArgentinaConodontes y graptolitos darriwilianos (Ordovícico medio) del cerro la chilca, precordillera central, argentina. Argentina
(Servicio Nacional de Geología y Minería, 2020-01)
The Ordovician System is extensively represented in the Precordillera of San Juan Province, Argentina. At the Cerro La Chilca in the Jáchal area, the limestone of the San Juan Formation is paraconformably overlain by ...
A new lungfish (Dipnoi) from the Late Triassic of South America
(Society of Vertebrate Paleontology, 2016-11)
Lungfishes belong to the sarcopterygian clade Dipnoi. Livingforms are represented by three genera distributed among SouthAmerica, Africa, and Australia. The oldest fossil record of lungfishesis Devonian (see Long, 2010), ...
La subzona de Periodon gladysi (Conodonta) en el Ordovícico Medio de Precordillera: su evaluaciónThe Periodon Gladysi (Conodonta) subzone in the Middle Ordovician: su evaluation
(Instituto Superior de Correlación Geológica, 2009-12)
En el esquema bioestratigráfico basado en conodontes del Ordovícico de Argentina está definida una subzona de intervalo que caracteriza la parte inferior de la Zona de Lenodus variabilis denominada Periodon "gladysi". La ...
Chemical and textural relations of britholite- and apatite-group minerals from hydrothermal REE mineralization at the Rodeo de los Molles deposit, Central Argentina
(Mineralogical Society of America, 2019-12)
Britholite group minerals (REE,Ca)5[(Si,P)O4]3(OH,F) are rather widespread rare-earth minerals in alkaline rocks and their associated metasomatic zones, where they usually form tiny accessory phases. In the REE deposit ...