Buscar
Mostrando ítems 1-10 de 299
Late middle Eocene Caviomorph Rodents from Contamana, Peruvian Amazonia
(Coquina Press, 2017-04)
Caviomorph rodents represent one of the most successful groups of placental mammals from South America. Despite their modern, Neogene and late Paleogene high diversity, their early evolutionary history has long remained ...
Fossil mammals of the Quebrada de los Colorados Formation (late middle Eocene) at the locality of La Poma, Salta Province, Argentina
(Taylor & Francis, 2018-05)
An anatomical and taxonomic analysis of the mammalian record in the locality of La Poma in Salta Province, Argentina, is here presented. This record consists in two specimens exhumed in levels of the Quebrada de los Colorados ...
433 Palynostratigraphy of the eocene esmeraldas formation, middle Magdalena Valley Basin, Colombia
The Eocene EsmeraldasFormation isa very importantoil reservoir intheMiddle Magdalena ValleyBasin, Colombia, which is a preduct of the fragmentatienof a Cenozoic forelandbasinby the uplift of the Northem Andes. Ihe ...
Patagonian Eocene Archaeopithecidae Ameghino, 1897 (Notoungulata): Systematic revision, phylogeny and biostratigraphy
(Paleontological Society, 2017-11)
The Archaeopithecidae is a very poorly known group of native ungulates from the Eocene of Patagonia (Argentina), whose alpha taxonomy has remained obscure since Ameghino's times. It is traditionally considered as a family ...
Cranial anatomy of an Eocene notoungulate mammal from northwestern Argentina with special reference on the ear region
(Taylor & Francis, 2017-05)
A detailed anatomical analysis is here presented focused on a notoungulate skull recovered from sediments of the lower part of the Quebrada de los Colorados Formation (LC I; late middle Eocene), cropping out in Salta ...
A reassessment of Antarctic polydolopid marsupials (Middle Eocene, La Meseta Formation)
(Cambridge University Press, 2009-03)
New polydolopid marsupial specimens have been recovered from the La Meseta Formation, a late early Eocene to probably early Oligocene unit cropping out in the northern third of Seymour (Marambio) Island, at some 100 km off ...
Diversity of cingulate xenarthrans in the middle-late Eocene of Northwestern Argentina
(Polish Academy of Sciences. Institute of Paleobiology, 2016-02-29)
The study of Paleogene mammals of intermediate and low latitudes has increased in the last decades and has been clearly demonstrated their importance in the comprehension of the evolution and faunistic changes outside ...
First bird remains from the Eocene of Algarrobo, central Chile Primeros restos de aves del Eoceno de Algarrobo, Chile central
(2012)
Paleogene records of birds in the Eastern margin of the Pacific Ocean have increased in recent years, being almost exclusively restricted to fossil Sphenisciformes (penguins). New avian remains (Ornithurae, Neornithes) ...