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Artículo

Small-sized mesotheriines (Mesotheriidae, Notoungulata) from Northwestern Argentina: Systematic, chronological, and paleobiogeographic implications

Armella, Matías AlbertoIcon ; Nasif, Norma; Cerdeño Serrano, Maria EsperanzaIcon
Fecha de publicación: 04/2018
Editorial: Pergamon-Elsevier Science Ltd
Revista: Journal of South American Earth Sciences
ISSN: 0895-9811
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Paleontología

Resumen

The Neogene outcrops in Northwestern Argentina have provided many fossil mammals, particularly notoungulates. However, the fossil record of the early stages of the late Miocene is scarce. The present study describes two mesotheriine specimens from Las Arcas Formation (underlying the Chiquimil Formation dated at 9.14 ± 0.09 Ma; Catamarca Province) and Saladillo Formation (dated at 10 ± 0.3 Ma; Tucumán Province), represented by a left maxillary fragment with complete M1–3 and a right isolated M3, respectively. The main feature of these pieces is their small size, significantly smaller than that of the Miocene genera Eutypotherium, Typotheriopsis, and Pseudotypotherium, recorded in Argentina. In contrast, these mesotheriines are closer to specimens known from Bolivia. The comparative analysis allows us to refer the material herein described to Plesiotypotherium aff. P. achirense and Mesotheriinae indet., with all cautions inherent to the incompleteness of the material. In turn, the paleobiogeographic implication of these new records is approached. A relationship concerning phylogenetic aspects, size, temporal range, and distribution pattern is proposed, taking into account the small size of the studied material in a temporal context of medium to large-sized mesotheriines.
Palabras clave: CATAMARCA , DISTRIBUTION , LATE MIOCENE , MESOTHERIINES , SANU , TUCUMÁN
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/86729
DOI: http://dx.doi.org/10.1016/j.jsames.2018.02.002
URL: https://www.sciencedirect.com/science/article/pii/S0895981117304868
Colecciones
Articulos(IANIGLA)
Articulos de INST. ARG. DE NIVOLOGIA, GLACIOLOGIA Y CS. AMBIENT
Articulos(INSUGEO)
Articulos de INST.SUP.DE CORRELACION GEOLOGICA
Citación
Armella, Matías Alberto; Nasif, Norma; Cerdeño Serrano, Maria Esperanza; Small-sized mesotheriines (Mesotheriidae, Notoungulata) from Northwestern Argentina: Systematic, chronological, and paleobiogeographic implications; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 83; 4-2018; 14-26
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