New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina)

The Neogene deposits of the Salicas Formation outcrop along the northern area of the Velasco Range. Their levels have provided several remains of mammals, including notoungulates, liptoterns, rodents, and xenarthrans. Focusing on Dasypodidae (Xenarthra, Cingulata), the record from La Rioja is fragme...

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Autores principales: Barasoain, Darío Daniel, González Ruiz, Laureano Raúl, Brandoni, Diego
Formato: Simposio
Lenguaje:Español
Publicado: Asociación Paleontológica Argentina 2025
Materias:
Salicas Formation (Argentina)
La Rioja province
Dasypodidae (Xenarthra, Cingulata)
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/57240
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-57240
record_format dspace
spelling I48-R184-123456789-572402025-08-14T10:25:02Z New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina) Barasoain, Darío Daniel González Ruiz, Laureano Raúl Brandoni, Diego Salicas Formation (Argentina) La Rioja province Dasypodidae (Xenarthra, Cingulata) The Neogene deposits of the Salicas Formation outcrop along the northern area of the Velasco Range. Their levels have provided several remains of mammals, including notoungulates, liptoterns, rodents, and xenarthrans. Focusing on Dasypodidae (Xenarthra, Cingulata), the record from La Rioja is fragmentary and has been less studied compared to other provinces with late Neogene localities in northwestern Argentina (i.e., Catamarca). Previous records from the formation include Chaetophractus sp., Proeuphractus limpidus, Proeuphractus sp., Macrochorobates scalabrinii, Macrochorobates sp. and Chasicotatus sp. In this contribution, we describe new specimens of Dasypodidae from the area of "El Degolladito" of the Salicas Formation, housed at the CRILAR collection (Anillaco, La Rioja, Argentina). The new described materials consist in several isolated osteoderms of the dorsal carapace of different taxa, including the Euphractinae Eutatini Chasicotatus peiranoi, the Euphractinae Euphractini Macrochorobates scalabrinii, Chorobates villossisimus, Paleuphractus argentinus and Prozaedyus sp., and the Tolypeutinae Priodontini Vetelia ghandii. These records substantially increase the Xenarthra diversity known for the Salicas Formation, while providing specific determinations of some previously mentioned genera. Though there are no radiometric dating for the Salicas Formation, the Dasypodidae association here recorded suggests a late Miocene age (Tortonian-Messinian) for the bearing levels of "El Degolladito", supporting the previously proposed ages. Additionally, C. peiranoi, P. argentinus and V. ghandii have been recorded over several late Miocene deposits in Northwestern Argentina, such as Loma de Las Tapias (San Juan), Chiquimil and Andalhuala (Catamarca), and Toro Negro (La Rioja) formations, suggesting an endemic Dasypodidae diversity in subandine areas during this lapse. 2025-08-13T15:32:49Z 2025-08-13T15:32:49Z 2021-11-30 Simposio Barasoain, Darío Daniel, González Ruiz, Laureano Raúl y Brandoni, Diego, 2021. New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina). En: VI Simposio del Mioceno-Pleistoceno del Centro y Norte de Argentina (VI SMPCNA). Ciudad Autónoma de Buenos Aires: Asociación Paleontológica Argentina, p. 1-1. 2469-0228 http://repositorio.unne.edu.ar/handle/123456789/57240 spa https://doi.org/10.5710/PEAPA.06.03.2024.495 openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 1-1 application/pdf Asociación Paleontológica Argentina
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Español
topic Salicas Formation (Argentina)
La Rioja province
Dasypodidae (Xenarthra, Cingulata)
spellingShingle Salicas Formation (Argentina)
La Rioja province
Dasypodidae (Xenarthra, Cingulata)
Barasoain, Darío Daniel
González Ruiz, Laureano Raúl
Brandoni, Diego
New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina)
topic_facet Salicas Formation (Argentina)
La Rioja province
Dasypodidae (Xenarthra, Cingulata)
description The Neogene deposits of the Salicas Formation outcrop along the northern area of the Velasco Range. Their levels have provided several remains of mammals, including notoungulates, liptoterns, rodents, and xenarthrans. Focusing on Dasypodidae (Xenarthra, Cingulata), the record from La Rioja is fragmentary and has been less studied compared to other provinces with late Neogene localities in northwestern Argentina (i.e., Catamarca). Previous records from the formation include Chaetophractus sp., Proeuphractus limpidus, Proeuphractus sp., Macrochorobates scalabrinii, Macrochorobates sp. and Chasicotatus sp. In this contribution, we describe new specimens of Dasypodidae from the area of "El Degolladito" of the Salicas Formation, housed at the CRILAR collection (Anillaco, La Rioja, Argentina). The new described materials consist in several isolated osteoderms of the dorsal carapace of different taxa, including the Euphractinae Eutatini Chasicotatus peiranoi, the Euphractinae Euphractini Macrochorobates scalabrinii, Chorobates villossisimus, Paleuphractus argentinus and Prozaedyus sp., and the Tolypeutinae Priodontini Vetelia ghandii. These records substantially increase the Xenarthra diversity known for the Salicas Formation, while providing specific determinations of some previously mentioned genera. Though there are no radiometric dating for the Salicas Formation, the Dasypodidae association here recorded suggests a late Miocene age (Tortonian-Messinian) for the bearing levels of "El Degolladito", supporting the previously proposed ages. Additionally, C. peiranoi, P. argentinus and V. ghandii have been recorded over several late Miocene deposits in Northwestern Argentina, such as Loma de Las Tapias (San Juan), Chiquimil and Andalhuala (Catamarca), and Toro Negro (La Rioja) formations, suggesting an endemic Dasypodidae diversity in subandine areas during this lapse.
format Simposio
author Barasoain, Darío Daniel
González Ruiz, Laureano Raúl
Brandoni, Diego
author_facet Barasoain, Darío Daniel
González Ruiz, Laureano Raúl
Brandoni, Diego
author_sort Barasoain, Darío Daniel
title New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina)
title_short New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina)
title_full New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina)
title_fullStr New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina)
title_full_unstemmed New late miocene records of Dasypodidae (Xenarthra, Cingulata) from the Salicas Formation (La Rioja province, Argentina)
title_sort new late miocene records of dasypodidae (xenarthra, cingulata) from the salicas formation (la rioja province, argentina)
publisher Asociación Paleontológica Argentina
publishDate 2025
url http://repositorio.unne.edu.ar/handle/123456789/57240
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AT gonzalezruizlaureanoraul newlatemiocenerecordsofdasypodidaexenarthracingulatafromthesalicasformationlariojaprovinceargentina
AT brandonidiego newlatemiocenerecordsofdasypodidaexenarthracingulatafromthesalicasformationlariojaprovinceargentina
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