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Pliocene pre-GABI herbivorous mammals from Espinar, Peruvian Andean Plateau

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dc.contributor.author Salas Gismondi, Rodolfo Martín
dc.contributor.author Ochoa, Diana
dc.contributor.author Gamarra, J.
dc.contributor.author Pujos, F.
dc.contributor.author Foster, D.A.
dc.contributor.author Tejada, J.V.
dc.date.accessioned 2023-10-09T17:09:19Z
dc.date.available 2023-10-09T17:09:19Z
dc.date.issued 2023
dc.identifier.uri https://hdl.handle.net/20.500.12866/14239
dc.description.abstract Pliocene South American mammals prior to the Great American Biotic Interchange comprise the evolutionary pinnacle of a long-lasting process of continental isolation, in which large-scale orogeny and climate change were instrumental. These processes resulted in unique assemblages of extinct groups with peculiar anatomies. However, interpretation of the functional roles that these organisms would have played in the ecosystem is challenging because well-preserved fossils of this time interval in South America are scarce. Here, we describe a new Early Pliocene assemblage of native herbivorous megamammals documented by skeletons in anatomical connection from the Peruvian Andean plateau (city of Yauri in Espinar, Cusco Department). Fossil-bearing deposits pertain to Member C of the El Descanso Formation dated at 4.75 ± 0.5 Ma, when the plateau attained near-modern elevations and a Puna-type plant ecosystem. The mammal assemblage is dominated by xenarthrans, including three ground sloths (cf. Megatheriops rectidens, Simomylodon uccasamamensis, and Proscelidodon sp.) and Andinoglyptodon mollohuancai gen. et sp. nov., the first Pliocene glyptodontine known by a well-preserved cranium and dermal armor. Notoungulates are represented by the toxodontid Posnanskytherium viscachanense. Both selective and bulk feeders are identified, suggesting the existence of diverse plant resources in the Pliocene Puna ecosystem. These native mammals constituted the typical Pliocene herbivorous guild of the central Andean plateau and provide an opportunity to investigate the structure of mammalian communities just before the arrival of Holarctic immigrants. en_US
dc.description.sponsorship Este trabajo fue financiado parcialmente por CONCYTEC, Perú: Beca [N°034-2019-02-FONDECYT-BM-INC.INV] y Beca de Ciencias Básicas [N°104-2018-FONDECYT a la RS-G]. es_PE
dc.language.iso eng
dc.publisher Taylor and Francis
dc.relation.ispartofseries Journal of Vertebrate Paleontology
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Pliocene en_US
dc.subject pre-GABI en_US
dc.subject herbivorous mammals en_US
dc.subject Espinar, Peru en_US
dc.title Pliocene pre-GABI herbivorous mammals from Espinar, Peruvian Andean Plateau en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1080/02724634.2023.2237079
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.05.03
dc.relation.issn 1937-2809


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