New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective

The knowledge of Neogene xenarthrans in Ecuador is still poor compared to other regions of South America. Until now, the only recognized species is the Cingulata Dasypodini Anadasypus aequatorianus Carlini, Castro, Madden, and Scillato-Yané, 2013 coming from the Letrero Formation (Upper Miocene, Nab...

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Autores principales:	Zurita, Alfredo Eduardo, Miño-Boilini, Ángel Ramón, Román Carrión, José Luis, Carlini, Alfredo Armando
Formato:	Jornada
Lenguaje:	Español
Publicado:	Asociación Paleontológica Argentina 2025
Materias:	Neogene Xenarthra Ecuador Letrero Formation
Acceso en línea:	http://repositorio.unne.edu.ar/handle/123456789/57262
Aporte de:	RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste

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spelling	I48-R184-123456789-572622025-08-14T10:27:18Z New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective Zurita, Alfredo Eduardo Miño-Boilini, Ángel Ramón Román Carrión, José Luis Carlini, Alfredo Armando Neogene Xenarthra Ecuador Letrero Formation The knowledge of Neogene xenarthrans in Ecuador is still poor compared to other regions of South America. Until now, the only recognized species is the Cingulata Dasypodini Anadasypus aequatorianus Carlini, Castro, Madden, and Scillato-Yané, 2013 coming from the Letrero Formation (Upper Miocene, Nabon Basin, southern Ecuador). However, some recent findings allow us to improve our knowledge about the Xenarthra diversity in the current territory of this country. The new remains are also coming from southern Ecuador, and they were exhumed from the Letrero Formation (upper Miocene) and Gonzanamá Formation (Catamayo basin, middle-upper Miocene). The recognized taxa include the Tardigrada Mylodontidae Mylodontinae, cf. Simomylodon sp., and the Cingulata Glyptodontidae indet. and Pampatheriidae. The morphology of the osteoderms and molariforms of the glyptodonts suggests that it could belong to new taxa, but further studies are necessary to confirm this taxonomic hypothesis. In turn, if confirmed, this represents the first report of the genus Simomylodon in Ecuador. A preliminary comparison with the Laventan fauna of Colombia reveals taxonomic differences. To summarize, this new findings shed light to our knowledge of the Neogene diversity of Xenarthra at low latitudes and underline the relevance of the Mio-Pliocene units. Certainly, new field works will produce more findings that help us to interpret more properly the diversity achieved by this clade, and its phylogenentic and paleobiogeographic relationship with faunas from coetaneous deposits of southern South America. *Financial support: PICT 201 7-0765, PI 0002. 2025-08-13T15:32:54Z 2025-08-13T15:32:54Z 2019-05-29 Jornada Zurita, Alfredo Eduardo, et al., 2019. New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective. En: 33as Jornadas Argentinas de Paleontología de Vertebrados. Ciudad autónoma de Buenos Aires: Asociación Paleontológica Argentina, p. 1-1. 2469-0228 http://repositorio.unne.edu.ar/handle/123456789/57262 spa https://peapaleontologica.org.ar/index.php/peapa/article/view/307 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	Neogene Xenarthra Ecuador Letrero Formation
spellingShingle	Neogene Xenarthra Ecuador Letrero Formation Zurita, Alfredo Eduardo Miño-Boilini, Ángel Ramón Román Carrión, José Luis Carlini, Alfredo Armando New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective
topic_facet	Neogene Xenarthra Ecuador Letrero Formation
description	The knowledge of Neogene xenarthrans in Ecuador is still poor compared to other regions of South America. Until now, the only recognized species is the Cingulata Dasypodini Anadasypus aequatorianus Carlini, Castro, Madden, and Scillato-Yané, 2013 coming from the Letrero Formation (Upper Miocene, Nabon Basin, southern Ecuador). However, some recent findings allow us to improve our knowledge about the Xenarthra diversity in the current territory of this country. The new remains are also coming from southern Ecuador, and they were exhumed from the Letrero Formation (upper Miocene) and Gonzanamá Formation (Catamayo basin, middle-upper Miocene). The recognized taxa include the Tardigrada Mylodontidae Mylodontinae, cf. Simomylodon sp., and the Cingulata Glyptodontidae indet. and Pampatheriidae. The morphology of the osteoderms and molariforms of the glyptodonts suggests that it could belong to new taxa, but further studies are necessary to confirm this taxonomic hypothesis. In turn, if confirmed, this represents the first report of the genus Simomylodon in Ecuador. A preliminary comparison with the Laventan fauna of Colombia reveals taxonomic differences. To summarize, this new findings shed light to our knowledge of the Neogene diversity of Xenarthra at low latitudes and underline the relevance of the Mio-Pliocene units. Certainly, new field works will produce more findings that help us to interpret more properly the diversity achieved by this clade, and its phylogenentic and paleobiogeographic relationship with faunas from coetaneous deposits of southern South America. *Financial support: PICT 201 7-0765, PI 0002.
format	Jornada
author	Zurita, Alfredo Eduardo Miño-Boilini, Ángel Ramón Román Carrión, José Luis Carlini, Alfredo Armando
author_facet	Zurita, Alfredo Eduardo Miño-Boilini, Ángel Ramón Román Carrión, José Luis Carlini, Alfredo Armando
author_sort	Zurita, Alfredo Eduardo
title	New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective
title_short	New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective
title_full	New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective
title_fullStr	New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective
title_full_unstemmed	New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective
title_sort	new findings of neogene xenarthra (mammalia) from ecuador : diversity and perspective
publisher	Asociación Paleontológica Argentina
publishDate	2025
url	http://repositorio.unne.edu.ar/handle/123456789/57262
work_keys_str_mv	AT zuritaalfredoeduardo newfindingsofneogenexenarthramammaliafromecuadordiversityandperspective AT minoboiliniangelramon newfindingsofneogenexenarthramammaliafromecuadordiversityandperspective AT romancarrionjoseluis newfindingsofneogenexenarthramammaliafromecuadordiversityandperspective AT carlinialfredoarmando newfindingsofneogenexenarthramammaliafromecuadordiversityandperspective
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New findings of Neogene Xenarthra (Mammalia) from Ecuador : diversity and perspective

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