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Diversity and biostratigraphy of the late oligocene-late miocene sand dollars (Echinoidea: Scutelliformes) of Argentina and UuguayDiversidad y bioestratigrafía de las galletas de mar (Echinoidea: scutelloida: scutellifomes) del oligoceno tardío-mioceno tardío de Argentina y Uruguay
(Revista de Biología Tropical, 2021-03)
Introduction: Scutelliforms were diverse and widespread in shallow marine environments during Neogene times in South America. Nevertheless, they have almost never been used as biostratigraphic tools. Objective: To provide ...
Updated synthesis of South American Mesotheriidae (Notoungulata) with emphasis on west-central Argentina
(Muséum d'histoire naturelle de la Ville de Genève, 2018-12)
Doctor Claude Guérin dedicated many years of his research to fossil rhinoceroses, but also to some of the interesting mammals that evolved in South America. This is why I contribute to this volume in his memory with a ...
Ultimate Eocene (Priabonian) chondrichthyans (Holocephali, Elasmobranchii) of Antarctica
(Society of Vertebrate Paleontology, 2016-07)
The Eocene La Meseta Formation on Seymour Island, Antarctic Peninsula, is known for its remarkable wealth of fossil remains of chondrichthyans and teleosts. Chondrichthyans seemingly were dominant elements in the Antarctic ...
Description of the Earliest Fossil Penguin from South America and First Paleogene Vertebrate Locality of Tierra Del Fuego, Argentina
(American Museum of Natural History, 2003-12)
We report the discovery of the first vertebrate from the Paleogene of Tierra del Fuego (Isla Grande), Argentina, in southernmost South America. The specimen consists of parts of an associated pelvic girdle and limb that ...
Early Paleogene climate at mid latitude in South America: Mineralogical and paleobotanical proxies from continental sequences in Golfo San Jorge basin (Patagonia, Argentina)
(Universidad de Barcelona, 2009-03)
The Paleocene-Eocene boundary was a period of transient and intense global warming that had a deep effect on middle and high latitude plant groups. Nevertheless, only scarce early Paleogene paleoclimatic records are known ...
Response to the comments on 'dental homologies and evolutionary transformations in Caviomorpha (Hystricognathi, Rodentia): new data from the Paleogene of Peruvian Amazonia'
(Taylor & Francis Ltd, 2020-11)
We offer brief commentaries on Boivin and Marivaux's account of caviomorph molar morphology and evolution. In accordance with Van Valen’s statement ‘Homology is resemblance caused by a continuity of information’, we reaffirm ...
Comments on "Dental homologies and evolutionary transformations in Caviomorpha (Hystricognathi, Rodentia): new data from the Paleogene of Peruvian Amazonia"
(Taylor & Francis Ltd, 2018-12)
We offer brief commentaries on Boivin and Marivaux's account of caviomorph molar morphology and evolution. In accordance with Van Valen’s statement ‘Homology is resemblance caused by a continuity of information’, we reaffirm ...
Paleogene glyptodontidae propalaehoplophorinae (mammalia, xenarthra) in extra-patagonian areasRegistros paleógenos de glyptodontidae propalaehoplophorinae (xenarthra, cingulata) en áreas extrapatagónicas
(Servicio Nacional de Geología y Minería, 2016-01)
Los registros paleógenos de Cingulata Glyptodontidae son muy escasos y los mejores conocidos provienen de la actual región patagónica de Argentina. Dos subfamilias han sido descritas: Glyptatelinae y Propalaehoplophorinae. ...
New Cingulata (Mammalia, Xenarthra) from the Upper Lumbrera Formation (Bartonian, middle Eocene), Salta Province, Argentina
(Brazilian Society of Paleontología, 2021-09)
Nós descrevemos restos isolados de cingulado do Paleógeno da localidade de El Simbolar, Formação Lumbrera Superior (Bartoniano), sul da Província de Salta, noroeste da Argentina. O material consiste em numerosos osteodermos ...
Sharks and rays from the Tonosí Formation (Eocene of Panamá)Tiburones y rayas de la Formación Tonosí (Eoceno de Panamá)
(Universidad de Costa Rica, 2014)