Results 41 to 50 of about 645 (184)

Campamento Vespucio, una nueva localidad con mamíferos pleistocenos en la provincia de Salta, Argentina

open access: yesEstudios Geologicos, 2012
En la presente contribución damos a conocer una nueva localidad con mamíferos fósiles pleistocenos, provenientes de una región poco explorada. Los materiales fueron hallados en la Quebrada del Aguay, en Campamento Vespucio, localidad de General Mosconi ...
G. G. Zacarías   +3 more
doaj   +1 more source

Modificaciones fosildiagenéticas en Toxodon platensis Owen, 1837 (Notoungulata, Toxodontidae) del Pleistoceno Tardío de la provincia de Corrientes, Argentina

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
Se analizaron las características fosildiagenéticas, incluyendo aspectos mineralógicos, geoquímicos y paleohistológicos, presentes en costillas de Toxodon platensis Owen (Mammalia, Notoungulata, Toxodontidae).
Rodrigo L. Tomassini   +4 more
doaj   +1 more source

Structural variation of the masseter muscle in Typotheria (Mammalia, Notoungulata)

open access: yes, 2017
The great morphologic diversity of the order Notoungulata is evident in remarkable traits, such as the body size, and this group includes from small, rodent size animals (e.g., Punapithecus) to forms exceeding 1000 kg in weight (e.g., Trigodon). Moreover, several cases of convergence with other placentals are known within the group, with rodent-like ...
SOSA, Luis Marcelo   +1 more
openaire   +3 more sources

Middle Pleistocene revelations: unravelling taphonomic processes in mammals including Mesotherium cristatum (Mesotheriidae, Notoungulata), Corralito Site, Córdoba Province, Argentina

open access: yesPalaeontology, Volume 68, Issue 4, July/August 2025.
Abstract Taphonomic studies of Cenozoic mammals are scarce. We report a study of the taphonomy of the Corralito site (Middle Pleistocene to Holocene), Córdoba Province, Argentina, which documents the last population of the South American native ungulate typotherid Mesotherium cristatum. We discovered two specimens of M.
Marcos Fernández‐Monescillo   +6 more
wiley   +1 more source

The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma

open access: yesGeophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Although the Drake Passage has been considered a critical component of ocean circulation and climate, its initial opening age remains controversial due to the weak constraints on the paleoposition of the Antarctic Peninsula. Here, new zircon U‐Pb geochronological studies are conducted on the Barchans Islands, providing a critical age ...
Liang Gao   +16 more
wiley   +1 more source

Postnatal ontogenetic scaling of Nesodontine (Notoungulata, Toxodontidae) cranial morphology

open access: yesActa Zoologica, 2011
AbstractCassini G.H., Flores D.A. and Vizcaíno S.F. 2012. Postnatal ontogenetic scaling of Nesodontine (Notoungulata, Toxodontidae) cranial morphology. —Acta Zoologica (Stockholm) 93: 249–259.Toxodontidae is a clade of endemic South American ungulates that comprises medium to very large animals, including strict megammamals, i.e., 1000 kg or more ...
Cassini, Guillermo Hernán   +2 more
openaire   +2 more sources

Considerações Paleoecológicas sobre os Notoungulados da Formação Tremembé,Bacia de Taubaté (São Paulo, Brasil). [PDF]

open access: yesAnuário do Instituto de Geociências, 2007
Notoungulates were recovered from bentonitic clays of the Tremembé Formation (Taubaté Basin).Two families, three genres and two species are known so far: Leontinidae (Taubatherium paulacoutoi and ?Ancylocoelus) and Notohippidae (Rhychippus brasiliensis).
Diogo Jorge de Melo   +2 more
doaj  

Capybaras (Hydrochoerus hydrochaeris) Generate Grazing Lawns and Maintain Plant Diversity in Neotropical Savanna

open access: yesApplied Vegetation Science, Volume 28, Issue 1, January/March 2025.
We show that excluding native grazers from a South American grassy ecosystem leads to strong declines in plant species richness over an 18‐month period. Our results imply that severely defaunated South American ecosystems have retained plant taxa and functional trait complexes that can tolerate intense herbivory, identifying herbivore reintroductions ...
Julia C. Mata   +6 more
wiley   +1 more source

Phylogenetic revision of the South American notopithecines (Mammalia: Notoungulata)

open access: yesJournal of Systematic Palaeontology, 2015
A phylogenetic analysis of all Eocene taxa assigned to Notopithecinae has been conducted, evaluating relationships amongst notopithecines, basal interatheriids and Interatheriinae. Other groups of native ungulates were also included. New dental and postcranial characters are considered with respect to previously published data; some characters are ...
openaire   +2 more sources

FIG. 19. — I2 in Un nouveau Toxodontidae (Mammalia, Notoungulata) du Pléistocène supérieur du Nordeste du Brésil

open access: yes, 2013
FIG. 19. — I2/ de Toxodon platensis Owen, 1837, Toca da Barra do Antonião, n° 7373. Échelle: 5 cm.Published as part of Guérin, Claude & Faure, Martine, 2013, Un nouveau Toxodontidae (Mammalia, Notoungulata) du Pléistocène supérieur du Nordeste du Brésil,
Guérin, Claude, Faure, Martine
core   +1 more source

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