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Mostrando ítems 11-20 de 199
Evolution of the Neogene Andean foreland basins of the Southern Pampas and Northern Patagonia (34°–41°S), Argentina
(Elsevier, 2015-12)
The Pampas plain (30°–41°S) has historically been considered as a sector that evolved independently from the adjacent Andean ranges. Nevertheless, the study of the Pampas showed that it is reasonable to expect an important ...
Petrology and provenance of the Toro Negro Formation (Neogene) of the Vinchina broken-foreland basin (Central Andes of Argentina)
(Elsevier, 2014-01)
Detrital modes of sandstones and conglomerates of the Toro Negro Formation (Late Miocene-early Pliocene) were used to analyze the evolution of the broken-foreland stage of the Vinchina Basin (28°30′–29°00′ S and 68°30′–68°20′ ...
The presence of Lepidobatrachus (Anura, Ceratophryidae) in the neogene of the la Pampa Province, Argentina
(Asociación Paleontológica Argentina, 2017-06-11)
Neogene anuran remains from central Argentina were assigned to Lepidobatrachus, in base on its exclusive combination of maxillary characters. Although it would represent one of the oldest Lepidobatrachus, the age of the ...
Phylogenetic analysis of the Panochthini (Xenarthra, Glyptodontidae), with remarks on their temporal distribution
(Taylor & Francis, 2013-02)
To test the monophyly of Panochthini, a phylogenetic analysis including all the species traditionally referred to the tribe was conducted. The matrix included 16 species of Glyptodontidae and 35 characters, from which 14 ...
A seedsnipe (Aves, Charadriiformes, Thinocoridae) from the Ensenadan Age/Stage (early-middle Pleistocene) of Buenos Aires, Argentina
(Taylor & Francis, 2017-08)
The fossil record of the Charadriiformes in South America is scarce and limited to the Neogene of Argentina and Peru. In the present contribution, we present and describe a nearly complete tarsometatarsus of Thinocorus ...
Diversification of the widespread neotropical frog Physalaemus cuvieri in response to Neogene-Quaternary geological events and climate dynamics
(Elsevier B.V., 2019-03-01)
Here we reconstructed the demographical history and the dispersal dynamics of Physalemus cuvieri through the Neogene-Quaternary periods by coupling DNA regions with different mutation rates, ecological niche modelling, ...
The geochemistry of lignite from the neogene ogwashi-asaba formation, niger delta basin, southern nigeria
(UNIVERSIDAD NACIONAL DE COLOMBIA, 2012)
First record of annonaceae wood for the neogene of South America, Amazon Basin, BrazilPrimeiro registro de madeira de annonaceae para o neógeno da América do Sul, Bacia do Amazonas, Brasil
(Sociedade Brasileira de Geologia, 2016-03)
The relief of the regions of Manaus and Itacoatiara,Central Amazon, is supported by Neogene siliciclastic rocks, boundedat the base and top by lateritic paleosols and covered by quaternary sedimentarydeposits from the ...
The relictual population of the purple clam Amiantis Purpurata (l.) in northern Patagonia (Argentina): the history of a warm-temperate-water neogene survivor
(Asociacion Paleontologica Argentina, 2014-06)
The purple clam Amiantis purpurata (Lamarck) is a warm-temperate species inhabiting shallow water along the coast from Espiritu Santo (Brazil) to northern Patagonia. It is one of the few survivors of the middle–late Miocene ...
Structure and development of the Andean system between 36◦ and 39◦S
(Elsevier, 2014-01)
One of the main morphological changes along the Southern Central Andes occurs from 36° to 39°S. The northern portion is characterized by prominent basement structures and a thick-skinned orogenic front with relief of over ...