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Mostrando ítems 1-10 de 14
Un inventaire fossile de la Guyane: historique et nouvelles perspectives
(Société Géologique de France, 2020-09)
Le territoire de la Guyane française, caractérisé par un couvert végétal extrêmement dense et étendu, est situé sur le bouclier guyanais, d'âge paléoprotérozoïque. La couverture sédimentaire phanérozoïque est réduite à ...
First Glimpse of the Silicified Hot Spring Biota from a New Jurassic Chert Deposit in the Deseado Massif, Patagonia, Argentina
(Asociacion Paleontologica Argentina, 2016-04)
Este trabajo reporta el descubrimiento de la biota preservada tridimensionalmente en cherts del complejo geotérmico jurásico La Bajada en el Macizo del Deseado, Patagonia, Argentina. Los depósitos silíceos epitérmicos del ...
Carbon isotopic signatures of soil organic matter correlate with leaf area index across woody biomes
(Wiley Blackwell Publishing, Inc, 2014-10)
1.Leaf area index (LAI), a measure of canopy density, is a key variable for modelling and under-standing primary productivity, and also water use and energy exchange in forest ecosystems. How-ever, LAI varies considerably ...
Landscape scale heterogeneity in the east Turkana ecosystem during the okote member (1.56 - 1.38 Ma)
(Elsevier, 2017)
Placing the biological adaptations of Pleistocene hominins within a well-resolved ecological framework
has been a longstanding goal of paleoanthropology. This effort, however, has been challenging due to the
discontinuous ...
Multitrophic interactions in a geothermal setting: Arthropod borings, actinomycetes, fungi and fungal-like microorganisms in a decomposing conifer wood from the Jurassic of Patagonia
(Elsevier Science, 2019-01)
A permineralized araucarioid conifer stem, preserved in state of partial decay, is described from the Middle to Late Jurassic Chon-Aike Formation (Bahía Laura Group) at Laguna Flecha Negra, in the Deseado Massif, Santa ...
Paleobotany and Sedimentology of Late Oligocene Terrestrial Strata from the Northwestern Ethiopian Plateau
(Universitat de València, 2010-03)
This paper describes the sedimentology and paleobotany of a Late Oligocene (27.36 ± 0.11 Ma) succession of volcaniclastic strata from the Margargaria River region, northwestern Ethiopian Plateau. Sedimentology indicates ...
Cumulative Human Impacts on Pinnipeds Over the Last 7,500 Years in Southern South America
(Society for American Archaeology, 2018-09)
Our research program on this topic combines zooarchaeological and stable isotope studies from a historical ecology perspective. We originated this approach, and developed new analytical techniques, to better link archaeological ...
Multiproxy studies of Early Miocene pedogenic calcretes in the Santa Cruz Formation of southern Patagonia, Argentina indicate the existence of a temperate warm vegetation adapted to a fluctuating water table
(Elsevier Science, 2018-07)
The Lower Miocene Santa Cruz Formation in southern Patagonia (Austral Basin, Argentina) contains several horizons of pedogenic calcretes, which record −17.5 myr old vegetation adapted to a shallow and fluctuating water ...
Insect Trace Fossil Associations in Paleosols: The Coprinisphaera Ichnofacies
(Society for Sedimentary Geology, 2000-02)
Analysis of fifty-eight paleosol trace fossil assemblages, ranging from the Triassic to the Recent, allows refinement of continental ichnofacies models and the proposal of a Coprinisphaera ichnofacies. The Coprinisphaera ...
First Pterosaur Post-Cranial Remains from the Lower Cretaceous Lohan Cura Formation (Albian) of Patagonia, ArgentinaPrimer elemento post-craneano de Pterosaurio desde la Formación Lohan Cura del Cretácico Inferior de la Patagonia, Argentina
(Asociación Paleontológica Argentina, 2019-04-18)
En esta contribución presentamos el primer elemento post-craneano de pterosaurio desde la Formación Lohan Cura (Albiano) de Cerro de los Leones (Picún Leufú, Provincia del Neuquén), representado por la ulna izquierda ...