Mammals from the Salicas Formation (late Miocene), La Rioja Province, northwestern Argentina: paleobiogeography, age, and paleoenvironment
Document title: Mammals from the Salicas Formation (late Miocene), La Rioja Province, northwestern Argentina: paleobiogeography, age, and paleoenvironment
Journal: Ameghiniana
Database: PERIÓDICA
System number: 000366800
ISSN: 0002-7014
Authors: 1
1
2
1
1
3
Institutions: 1Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción, Laboratorio de Paleontología de Vertebrados, Diamante, Entre Ríos. Argentina
2Universidad Nacional de La Plata, Museo de La Plata, La Plata, Buenos Aires. Argentina
3Centro Regional de Investigación Científica y Transferencia Tecnológica de La Rioja, Anillaco, La Rioja. Argentina
Year:
Season: Sep
Volumen: 49
Number: 3
Pages: 375-387
Country: Argentina
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
Spanish abstract El objetivo de esta contribución es analizar una colección de mamíferos fósiles procedentes de la Formación Salicas en el área de El Degolladito, provincia de La Rioja, Argentina. El material aquí reportado fue recolectado en dos sitios (sitio 1 y sitio 2). Los mamíferos registrados son: Macrochorobates Scillato-Yané, Chasicotatus Scillato-Yané, y Hoplophorini indet. (Xenarthra, Cingulata); Paedotherium minor Cabrera, cf Pseudotypotherium Ameghino (Notoungulata, Typotheria); Neobrachytherium Soria (Litopterna, Lopholipterna); Orthomyctera Ameghino, cf. Cardiomys Ameghino
English abstract This study analyzes a collection of fossil mammals from the Salicas Formation in the El Degolladito area, La Rioja Province, Argentina. The materials reported herein were recovered from two sites (site 1 and site 2) and are: Macrochorobates Scillato-Yané, Chasicotatus Scillato-Yané, and Hoplophorini indet. (Xenarthra, Cingulata); Paedotherium minor Cabrera, cf Pseudotypotherium Ameghino (Notoungulata, Typotheria); Neobrachytherium Soria (Litopterna, Lopholipterna); Orthomyctera Ameghino, cf. Cardiomys Ameghino, Lagostomus (Lagostomopsis) Kraglievich, and Octodontidae indet. (Rodentia, Caviomorpha). This new mammalian assemblage, together with one previously recorded, has several taxa in common with mammalian associations from Central Argentina (i.e., La Pampa Province). Among those coming from Northwestern Argentina, the major affinity is with the El Jarillal Member (Chiquimil Formation) and then the Andalhuala Formation (both in Catamarca Province). The Salicas Formation fauna is considered as latest Miocene in age until new fossil discoveries and radioisotopic dates allow a better calibration. The fossil biota and geological data suggests that the Salicas Formation was deposited in flatlands, under warm and dry conditions. This environment was probably dominated by open grasslands, with forested areas near rivers and lagoons
Disciplines: Biología
Keyword: Mamíferos,
Paleontología,
Paleontología sistemática,
Descripción taxonómica,
Argentina,
Mioceno Tardío,
Paleobiogeografía,
Paleoambiente,
Edad
Keyword: Biology,
Mammals,
Paleontology,
Systematic paleontology,
Taxonomic description,
Argentina,
Late Miocene,
Paleobiogeography,
Paleoenvironments,
Age
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