Results 31 to 40 of about 828 (130)

El Gran Intercambio Biótico Americano: una revisión paleoambiental de evidencias aportadas por mamíferos y aves neotropicales [PDF]

open access: yes, 2018
Tradicionalmente, se ha considerado que la formación del istmo de Panamá (durante el Plioceno hace 3 Ma) facilitó el movimiento de especies entre Sudamérica y Norteamérica. Este proceso ecológico y evolutivo denominado Gran Intercambio Biótico Americano (
Gamboa, Sara   +3 more
core   +5 more sources

New Early Eocene mammalian fauna from western Patagonia, Argentina [PDF]

open access: yes, 2009
Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the
Aragón, E   +14 more
core   +4 more sources

Consideraciones Sistemáticas y Bioestratigráficas Acerca de Thoatheriopsis Mendocensis Soria, 2001 (Litopterna, Proterotheriidae)

open access: yesAmeghiniana, 2012
Abstract. SYSTEMATIC AND BIOSTRATIGRAPHIC CONSIDERATIONS ON THOATHERIOPSIS MENDOCENSIS SORIA, 2001 (LITOPTERNA, PROTEROTHERIIDAE). The revision of the Family Proterotheriidae has led to the study of the specimen MLP 81-XI-28-1 of Thoatheriopsis mendocensis Soria, found in the so-called Anfiteatro de Cacheuta (Mendoza Province, Argentina).
Villafañe, Amalia Leonor   +2 more
openaire   +2 more sources

Mammals of late Pleistocene-early holocene of southeast of the province of Cordoba, and their paleoenvironmental implications for the center of Argentina [PDF]

open access: yes, 2014
Paleontological exploration on the eastern plain of Córdoba Province is scarce, only referring to mammal assemblages from Mar Chiquita lake or San Francisco localities in the northeast of the Córdoba province, or specifi c discoveries in the centre and ...
Cruz, Laura Edith, Luna, Carlos Alberto
core   +1 more source

Rio Juruá: site 29 of Price’s expedition, and the first record of a Sebecidae (Notosuchia) for the Brazilian Solimões Formation [PDF]

open access: yesAnais da Academia Brasileira de Ciências
The Solimões Formation is one of the most fossiliferous units of the Neogene to Pleistocene of South America. Its rocks represent fluvial lacustrine Paleo-Amazon environments providing a rich record of paleovertebrate remains, including fishes (e.g ...
ANDRÉ E. PIACENTINI PINHEIRO   +4 more
doaj   +1 more source

Cambios en la riqueza taxonómica y en las tasas de primera y última aparición de los Proterotheriidae (Mammalia, Litopterna) durante el Cenozoico

open access: yesEstudios Geologicos, 2006
Los Proterotheriidae han sido registrados desde el Paleoceno Superior hasta el Holoceno [«Edadesmamífero (= SALMAs) Itaboraiense-Lujanense]. Son mayoritariamente braquiodontes, cursoriales, de tamaño pequeño a mediano, que muestran una temprana tendencia
A. L. Villafañe   +2 more
doaj   +1 more source

Anatomy and phylogeny of a new small macraucheniid (Mammalia: Litopterna) from the Bahía Inglesa Formation (late Miocene), Atacama Region, Northern Chile [PDF]

open access: yes, 2023
We describe a new macraucheniine macraucheniid, Micrauchenia saladensis gen. et sp. nov., from the late Miocene (Huayquerian SALMA). This is the first litoptern from Bahía Inglesa Formation, Chile.
Alarcón-Muñoz, Jhonatan   +5 more
core   +1 more source

New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications [PDF]

open access: yes, 2017
During the last decade, the Deseadan (late Oligocene) Quebrada Fiera locality, Mendoza Province, Argentina, has provided a large amount of mammal remains.
Cerdeño Serrano, Maria Esperanza   +2 more
core   +1 more source

Proterotheriidae (Mammalia, Litopterna) from the Cerro Azul Formation (late Miocene), La Pampa Province, Argentina

open access: yesJournal of South American Earth Sciences, 2018
Fil: Schmidt, Gabriela Ines. Provincia de Entre Rios. Centro de Investigaciones Cientificas y Transferencia de Tecnologia a la Produccion. Universidad Autonoma de Entre Rios. Centro de Investigaciones Cientificas y Transferencia de Tecnologia a la Produccion. Consejo Nacional de Investigaciones Cientificas y Tecnicas.
Schmidt, Gabriela Ines   +3 more
openaire   +2 more sources

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

Home - About - Disclaimer - Privacy