Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina

Northwestern Argentina contains one of the most complete continental late Neogene (ca. 9e2.58 Ma) fossiliferous sequences in South America, especially in the current territories of the Catamarca, Tucumán and Jujuy provinces. More precisely in Jujuy Province several localities bearing mainly fossil m...

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Autores principales: Zurita, Alfredo Eduardo, Camacho, María, Miño-Boilini, Ángel Ramón, Candela, Adriana Magdalena, Cuadrelli, Francisco, Krmpotic, Cecilia Mariana, Solís, Natalia
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Naturales
Diversity
Fossil mammals
Miocene
Pliocene
Puna
South America
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/148022
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-148022
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Diversity
Fossil mammals
Miocene
Pliocene
Puna
South America
spellingShingle Ciencias Naturales
Diversity
Fossil mammals
Miocene
Pliocene
Puna
South America
Zurita, Alfredo Eduardo
Camacho, María
Miño-Boilini, Ángel Ramón
Candela, Adriana Magdalena
Cuadrelli, Francisco
Krmpotic, Cecilia Mariana
Solís, Natalia
Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina
topic_facet Ciencias Naturales
Diversity
Fossil mammals
Miocene
Pliocene
Puna
South America
description Northwestern Argentina contains one of the most complete continental late Neogene (ca. 9e2.58 Ma) fossiliferous sequences in South America, especially in the current territories of the Catamarca, Tucumán and Jujuy provinces. More precisely in Jujuy Province several localities bearing mainly fossil mammals have been reported at the Quebrada de Humahuaca in the Uquía, Maimar a and Tilcara formations, in which the clade Xenarthra (Mammalia) is well-represented. In this scenario, the fossiliferous potential of other localities of Jujuy Province are less known, especially in those areas located at the northwest end of Argentina, bordering Bolivia in the Northern Puna. A new late Neogene fossiliferous locality near Calahoyo (3639 m.a.s.l), Jujuy Province, is here reported. The materials, belonging to Xenarthra, were exhumed from the base of the Tafna Formation which was deposited in a sedimentary basin by alluvial and/or fluvial currents, undergoing transitions of various lacustrine episodes. The taxa include the Tardigrada <i>Pyramiodontherium bergi</i> (Megatheriidae) and the Cingulata <i>Eosclerocalyptus</i> sp. (Glyptodontidae) and <i>Macrochorobates chapalmalensis</i> (Dasypodidae). From a biostratigraphic viewpoint, this assemblage suggests a Late Miocene-Pliocene age for the base of the Tafna Formation, and partially contradicts the supposed Plio-Pleistocene age of this unit. Finally, the new specimens here described indicate that Xenarthra were taxonomically and ecologically diverse during the late Neogene in the northwest end of Argentina, since they are represented by at least three main lineages (sloths, glyptodontids and armadillos).
format Articulo
Articulo
author Zurita, Alfredo Eduardo
Camacho, María
Miño-Boilini, Ángel Ramón
Candela, Adriana Magdalena
Cuadrelli, Francisco
Krmpotic, Cecilia Mariana
Solís, Natalia
author_facet Zurita, Alfredo Eduardo
Camacho, María
Miño-Boilini, Ángel Ramón
Candela, Adriana Magdalena
Cuadrelli, Francisco
Krmpotic, Cecilia Mariana
Solís, Natalia
author_sort Zurita, Alfredo Eduardo
title Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina
title_short Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina
title_full Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina
title_fullStr Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina
title_full_unstemmed Xenarthra (Mammalia) from a new late Neogene fossiliferous locality in Northwestern Argentina
title_sort xenarthra (mammalia) from a new late neogene fossiliferous locality in northwestern argentina
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/148022
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