Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes

With noteworthy outcrops in the Angastaco Basin (Salta Province), the Palo Pintado Formation is perhaps one of the most intensely studied late Miocene stratigraphical unit of northwestern Argentina from geological, paleoecological, and paleobotanical approaches. In contrast, the mammals from this un...

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Detalles Bibliográficos
Autores principales: Candela, Adriana M., Galli, Claudia Inés, Rasia, Luciano Luis, Voglino, Damian, Abello, Maria Alejandra, García Esponda, Cesar M., Zurita, Alfredo Eduardo
Formato: Artículo
Lenguaje:Inglés
Publicado: Elsevier 2025
Materias:
Caviomorph rodents
Late neogene
Angastaco basin
Calchaquí valley
Mammalian diversity
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/56498
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-56498
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spelling I48-R184-123456789-564982025-04-29T13:44:33Z Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes Candela, Adriana M. Galli, Claudia Inés Rasia, Luciano Luis Voglino, Damian Abello, Maria Alejandra García Esponda, Cesar M. Zurita, Alfredo Eduardo Caviomorph rodents Late neogene Angastaco basin Calchaquí valley Mammalian diversity With noteworthy outcrops in the Angastaco Basin (Salta Province), the Palo Pintado Formation is perhaps one of the most intensely studied late Miocene stratigraphical unit of northwestern Argentina from geological, paleoecological, and paleobotanical approaches. In contrast, the mammals from this unit are scarcely known, most of them lacking a precise stratigraphical and geochronological adjustment. In this contribution, we report new caviomorph rodents from the Palo Pintado Fm, exposed at Calchaquí Valley (Eastern Cordillera, Angastaco Basin). The stratigraphical and geochronological control of the new specimens indicate a time window ranging from ~9.3 Ma to ~6.1 Ma. The first records of brachydont mammals of the Palo Pintado Fm, represented by the caviomorph Erethizontidae (Erethizontidae sp. nov. cf. Microsteiromys sp.) and Echimyidae (cf. “Eumysops” parodii, and cf. Thrichomys sp.), are described. Dinomyidae (cf. Ferigolomys sp.), small Caviidae (gen. and sp. indet. A and B), and the abrocomid Protabrocoma paranensis are also identified. Caviomorphs from the Palo Pintado Fm (containing the oldest and more recent taxa of different Neotropical linages) allow us to suggest Angastaco Basin as “museum” and “cradle” of biodiversity during the Tortonian and Messinian ages. Our análisis indicates that the late Miocene mammals of the Palo Pintado Fm are compatible with the occurrence of forested environments developed under humid and warm conditions, in agreement with independent paleoenvironmental and paleoclimatic proxies. A close biogeographic relationship between the area of the Calchaquí Valley, the Brazilian Acre, and the Argentinian Mesopotamia during the late Miocene is also suggested. 2025-03-27T14:29:55Z 2025-03-27T14:29:55Z 2021-10 Artículo Candela, Adriana M., et al., 2021. Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes. Journal of South American Earth Sciences. Amsterdam: Elsevier, vol. 112. ISSN 0895-9811. 0895-9811 http://repositorio.unne.edu.ar/handle/123456789/56498 eng https://doi.org/10.1016/j.jsames.2021.103602 openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 1-15 application/pdf Elsevier Journal of South American Earth Sciences, 2021, vol. 112, p. 1-15.
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 Inglés
topic Caviomorph rodents
Late neogene
Angastaco basin
Calchaquí valley
Mammalian diversity
spellingShingle Caviomorph rodents
Late neogene
Angastaco basin
Calchaquí valley
Mammalian diversity
Candela, Adriana M.
Galli, Claudia Inés
Rasia, Luciano Luis
Voglino, Damian
Abello, Maria Alejandra
García Esponda, Cesar M.
Zurita, Alfredo Eduardo
Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes
topic_facet Caviomorph rodents
Late neogene
Angastaco basin
Calchaquí valley
Mammalian diversity
description With noteworthy outcrops in the Angastaco Basin (Salta Province), the Palo Pintado Formation is perhaps one of the most intensely studied late Miocene stratigraphical unit of northwestern Argentina from geological, paleoecological, and paleobotanical approaches. In contrast, the mammals from this unit are scarcely known, most of them lacking a precise stratigraphical and geochronological adjustment. In this contribution, we report new caviomorph rodents from the Palo Pintado Fm, exposed at Calchaquí Valley (Eastern Cordillera, Angastaco Basin). The stratigraphical and geochronological control of the new specimens indicate a time window ranging from ~9.3 Ma to ~6.1 Ma. The first records of brachydont mammals of the Palo Pintado Fm, represented by the caviomorph Erethizontidae (Erethizontidae sp. nov. cf. Microsteiromys sp.) and Echimyidae (cf. “Eumysops” parodii, and cf. Thrichomys sp.), are described. Dinomyidae (cf. Ferigolomys sp.), small Caviidae (gen. and sp. indet. A and B), and the abrocomid Protabrocoma paranensis are also identified. Caviomorphs from the Palo Pintado Fm (containing the oldest and more recent taxa of different Neotropical linages) allow us to suggest Angastaco Basin as “museum” and “cradle” of biodiversity during the Tortonian and Messinian ages. Our análisis indicates that the late Miocene mammals of the Palo Pintado Fm are compatible with the occurrence of forested environments developed under humid and warm conditions, in agreement with independent paleoenvironmental and paleoclimatic proxies. A close biogeographic relationship between the area of the Calchaquí Valley, the Brazilian Acre, and the Argentinian Mesopotamia during the late Miocene is also suggested.
format Artículo
author Candela, Adriana M.
Galli, Claudia Inés
Rasia, Luciano Luis
Voglino, Damian
Abello, Maria Alejandra
García Esponda, Cesar M.
Zurita, Alfredo Eduardo
author_facet Candela, Adriana M.
Galli, Claudia Inés
Rasia, Luciano Luis
Voglino, Damian
Abello, Maria Alejandra
García Esponda, Cesar M.
Zurita, Alfredo Eduardo
author_sort Candela, Adriana M.
title Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes
title_short Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes
title_full Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes
title_fullStr Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes
title_full_unstemmed Late Miocene mammals from the Calchaquí Valley (Palo Pintado formation, northwestern Argentina) : biogeographic and paleoenvironmental implications for the southern central Andes
title_sort late miocene mammals from the calchaquí valley (palo pintado formation, northwestern argentina) : biogeographic and paleoenvironmental implications for the southern central andes
publisher Elsevier
publishDate 2025
url http://repositorio.unne.edu.ar/handle/123456789/56498
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