Results 71 to 80 of about 14,273,827 (206)

First Record of an Extinct Marabou Stork in the Neogene of South America [PDF]

open access: yes, 2008
We describe a new large species of marabou stork, Leptoptilus patagonicus(Ciconiiformes, Ciconiidae, Leptoptilini), from the late Miocene Puerto Madryn Formation, Chubut Province, Argentina.
Cladera, Gerardo, Noriega, Jorge Ignacio
core   +1 more source

Vulnerability of marine megafauna to global at‐sea anthropogenic threats

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
Michelle VanCompernolle   +309 more
wiley   +1 more source

Riqueza específica y patrones de distribución de equinodermos en el Atlántico Sudoccidental entre los 34 y 56°S [PDF]

open access: yes, 2014
El objetivo de este estudio es recopilar y analizar la información histórica disponible sobre equinodermos en el Atlántico Sudoccidental, a fin de elaborar una síntesis del estado de conocimiento actual, identificar patrones de distribución geográfica de
Bremec, Claudia Silvia   +3 more
core   +3 more sources

Future Climate Change Threatens the Genetic Diversity and Distribution of Some South American Freshwater Crustaceans of the Genus Aegla

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 1, January 2026.
ABSTRACT Climate change significantly threatens biodiversity, particularly in freshwater ecosystems, which host many endemic and threatened species. Among them, aeglids stand out as strictly endemic, ecologically important and highly threatened crustaceans, making them a relevant model for investigating the impacts of climate change on aquatic ...
Gislaine Puli   +4 more
wiley   +1 more source

Fossil pollen records reveal a late rise of open-habitat ecosystems in Patagonia [PDF]

open access: yes, 2012
The timing of major turnovers in terrestrial ecosystems of the Cenozoic Era has been largely interpreted from the analysis of the assumed feeding preference of extinct mammals. For example, the expansion of open-habitat ecosystems (grasslands or savannas)
Barreda, Viviana Dora, Palazzesi, Luis
core   +2 more sources

Morphology of the Mid-Sized Tortoises (Testudines: Testudinidae) from the Middle Miocene of Northwestern Chubut (Argentina)

open access: yesAmeghiniana, 2015
. In this paper, new remains of the extinct mid-sized testudinid Chelonoidis gringorum (Simpson) from northwestern Chubut (Argentina) are described in detail.
Carolina Oriozabala, J. Sterli, L. Ruiz
semanticscholar   +1 more source

Caenogastropods and heterobranch gastropods from the Hettangian deposits of Luxembourg: palaeobiogeography and Early Jurassic faunal recovery in the western Tethys

open access: yesPapers in Palaeontology, Volume 12, Issue 1, January/February 2026.
Abstract We describe the Hettangian Caenogastropoda and Heterobranchia of the Luxembourg Sandstone Formation, a wedge of clastic sediments deposited along the eastern margin of Paris Basin during the Early Jurassic. Five new genera and 11 new species are erected: Bourguetia bipartita sp. nov., Globularia delsatei sp. nov., Oonia feidtorum sp.
Stefano Monari   +3 more
wiley   +1 more source

DOS NUEVOS MARSUPIALES "PSEUDODIPROTODONTES" DEL EOCENO DE PATAGONIA, ARGENTINA

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2015
Quirogalestes alniagaucha n. gen. et sp. is an early Eocene Pichipilinae (Paucituberculata, Caenolestidae) distinguished from Pichipilus and Phonocdromus by the larger size of its p3, and by having a lower molar pattern that is primitive with respect to ...
Francisco J. Goin, Adriana M. Candela
doaj  

Adverse social determinats and risk for congenital anomalies [PDF]

open access: yes, 2014
INTRODUCCIÓN: Diferentes trabajos han relacionando condiciones sociales adversas a nivel familiar y regional con resultados perinatales (mortalidad neonatal, bajo peso y prematuridad); sin embargo, pocos estudiaron el efecto de la pobreza sobre anomalías
Campaña, Hebe   +8 more
core   +3 more sources

First record of Banderomys leanzai Kramarz, 2005 (Rodentia, Caviomorpha) in Chubut Province, Patagonia (Argentina)

open access: yes, 2017
Cephalomyidae was established in the XIX century, and considered by different authors as a heterogeneous group of hypsodont South American hystricognath rodents.
Felipe Busker   +3 more
semanticscholar   +1 more source

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