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Mostrando ítems 1-10 de 5022
Paleomagnetic studies on the late Ediacaran - Early Cambrian Puncoviscana and the late Cambrian Campanario formations, NW Argentina: New paleogeographic constraints for the Pampia terrane
(Pergamon-Elsevier Science Ltd, 2016-10)
A magnetofabric and paleomagnetic study was carried out in the Late Ediacaran - Early Cambrian Puncoviscana and the early Late Cambrian Campanario formations, exposed in Santa Victoria Oeste, in northwestern Argentina. Ten ...
Late Carboniferous miospores from the Tarma Formation, Pongo de Mainique, Peru
(Elsevier Science, 2002-12)
For the first time, a palynologic assemblage is described from the upper section of the Tarma Formation, Peru. It is dominated by monosaccate pollen grains with subordinate striate grains and very few spores. The abundance ...
New theropod remains from the Late Jurassic Cañadón Calcáreo formation of Chubut, Argentina
(Elsevier, 2021-11)
Late Jurassic South American theropod faunas are still extremely poorly known, with large-sized ceratosaurids and megalosaurids having been identified on the basis of isolated teeth, whereas the only named taxa, Chilesaurus ...
A sperm whale (Cetacea: Physeteroidea) from the Paraná Formation (Late Miocene) of Entre Ríos, Argentina. Environment and Taphonomy
(Asociacion Paleontologica Argentina, 2011-09)
Sperm whales (Physeteroidea) are known since the late Oligocene. They became very diverse during the middle and late Miocene (Bianucci and Landini, 2006). They are currently represented by only three species. Sperm whales ...
Sclerorhynchid teeth (Neoselachii, Sclerorhynchidae) from the Late Cretaceous of the Quiriquina Formation, central Chile
(Servicio Nacional de Geología y Minería (SERNAGEOMIN), 2004)
Vestiges of late precambrian (or younger) microfossils in chert of the la tinta formation, northeast ArgentinaVestiges of late precambrian (or younger) microfossils in chert of the la tinta formation, northeast Argentina
(Universidade de São Paulo, Instituto de Geociências, 1978)
The Maastrichtian – Danian at General Roca (Patagonia, Argentina): a reappraisal of the chronostratigraphy and biostratigraphy of a type locality
(E Schweizerbartsche Verlags, 2011-02)
The Late Cretaceous - Early Paleogene succession exposed in the type area of the Roca Formation (General Roca, Rfo Negro Province), has been sampled in detail. Analyses of the calcareous nannofossil assemblages indicate ...
Turtles from the Late Cretaceous (Campanian) of El Gallo Formation, Baja California, Mexico
(Pergamon-Elsevier Science Ltd, 2018-12)
Turtles are typically important members of Late Cretaceous vertebrate assemblages throughout North America, and are considered a useful tool to define biogeographic patterns. In Mexico, Cretaceous turtles have been recorded ...