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Fossil groups in the Millennium simulation Their environment and its evolution
(EDP SCIENCES S APARIS, 2011)
Context. Fossil systems are defined to be X- ray bright galaxy groups ( or clusters) with a two- magnitude difference between their two brightest galaxies within half the projected virial radius, and represent an interesting ...
Fossil Araceae from the Upper Cretaceous of Patagonia, Argentina, with implications on the origin of free-floating aquatic aroids
(Elsevier Science, 2014-12)
Herein, we describe and name a new fossil genus and species, Aquaephyllum auriculatum, and report on the presence of Pandaniidites pollen grains from La Colonia Formation (Maastrichtian, Upper Cretaceous), Patagonia, ...
Myrtaceae fossil leaves from the Río Turbio Formation (Middle Eocene), Santa Cruz Province, Argentina
(Taylor & Francis, 2014-11)
Myrtaceae, the gum tree family, is a large angiosperm clade of 5671 species mostly distributed in tropical and subtropical regions of the world. In the southernmost tip of South America (Santa Cruz province) where the ...
Redescription and reassignment of the fossil wood Menendoxylon piptadiensis from the Pliocene Andalhuala Formation, South America
(Cambridge University Press, 2017-11)
A new study of the holotype of Menendoxylon piptadiensis has revealed that this taxon possesses many diagnostic anatomical features not associated with Leguminoseae-Mimosoideae. In this contribution, it was described again ...
H. V. VALLIOIS ET G. BILLY. Nouvelles recherches sur les hommes fossiles de l'Abri de Cro-MagnonH. V. VALLIOIS ET G. BILLY. Nouvelles recherches sur les hommes fossiles de l'Abri de Cro-MagnonH. V. VALLIOIS ET G. BILLY. Nouvelles recherches sur les hommes fossiles de l'Abri de Cro-Magnon
(Instituto de Investigaciones Antropológicas, 2010)
Prediction of offspring in extant and extinct mammals to add light on paleoecology and evolution
(Elsevier Science, 2016-07)
Reproductive strategies can be inferred from adult body mass, although offspring characteristics can give more accurate tools to predict life histories. In fossil mammals, adult body mass estimation incorporates error to ...
Caracterização espectroscópica de peixe do período cretáceo (Bacia do Araripe)
(Sociedade Brasileira de Química, 2007-02-01)
The study of fossils has made considerable progress over the last years as a result of the use of new experimental techniques. This paper describes the chemical composition of a fossilized fish of the Cretaceous period, ...
Thermal behavior of renewable diesel from sugar cane, biodiesel, fossil diesel and their blends
(2013-04-22)
Biofuels and their blends with fossil fuel are important energy resources, whose production and application have been largely increased internationally. This study focuses on the evaluation of the activation energy of the ...
Phylogeny and divergence times of suckers (Cypriniformes: Catostomidae) inferred from Bayesian total-evidence analyses of molecules, morphology, and fossils
(Peerj Inc, 2018-07-04)
Catostomidae (suckers) is a diverse (76 species) and broadly distributed family of Holarctic freshwater fishes with a rich fossil record and a considerable number (similar to 35%) of threatened and imperiled species. We ...
Insights on the behavior of Late Paleozoic aquatic crustaceans (Pygocephalomorpha?): compound trace fossils from Western Argentina
(Taylor & Francis, 2014-05)
We describe intergradations between the arthropod repichnial trace fossils Diplichnites gouldi (Gevers et al., 1971), Dendroidichnites Demathieu et al., 1992, and Monomorphichnus Crimes, 1970 with two distinct cubichnial ...