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DOI	10.1016/j.quascirev.2020.106695
	Radiocarbon dates of fossil record assigned to mylodontids (Xenarthra - Folivora) found in Cueva del Milodón; Chile
	Pérez L.M.; Toledo N.; Mari F.; Echeverría I.; Tonni E.P.; Toledo M.J.
发表日期	2021
ISSN	0277-3791
卷号	251
英文摘要	The Cueva del Milodón (CdM, southern Chile), has been explored repeatedly since the end of the 19th century. Many institutions in the world house specimens from CdM, standing out the mylodontid sloths. Until now, 36 14C measurements were performed on these remains using equivalent methodologies, Gas Proportional Counter (GPC), Liquid Scintillation Counting (LSC) and Accelerator Mass Spectrometry (AMS). The goals of this work are to review published dates, report two new radiocarbon dates made by us, and discuss the occurrence of the mylodonts in southernmost South America in a glacial context and its possible coexistence with humans. Among the published 16 direct (hair, skin, bone) and 20 indirect (excrement) 14C dates, 13 and 18 are considered here as reliable, respectively. Dates considered unreliable presented several issues (transcription errors, duplicate dates, misidentified samples, etc.), being excluded from the analysis to avoid further misunderstandings. Two new 14C dates performed by us on pieces housed in the Museo de La Plata (skin - AMS) and (bone - LSC) were added, making a total of 33 valid dates. A remarkable amplitude in the radiocarbon ages of the mylodont remains in CdM is evidenced, showing a range of values from ∼14,000 BP to ∼9800 BP, since upper Pleistocene (“Tarantian”) to early Holocene (Greenlandian). However, the direct dates of maximum confidence available show a strong modal representation in the Upper Pleistocene. Climate evidence available for this period indicates a complex interplay of deglaciation and brief cold reversals, but suggests that mylodonts could take advantage of their dense fur and thick skin, large body mass and suitability to live in caves to prosper in such cold and humid environments. Finally, evidence supporting coexistence of mylodonts and humans is briefly discussed. © 2020 Elsevier Ltd
英文关键词	14C ages; Grypotherium domesticum; Lower Holocene (Greenlandian); Skin; Upper Pleistocene (Tarantian); Última Esperanza
语种	英语
scopus关键词	Mass spectrometry; Accelerator mass spectrometry; Early Holocene; Fossil records; Humid environment; Liquid-scintillation counting; Modal representation; Radiocarbon age; Radiocarbon dates; Mammals; Esperanza; sloths; Xenarthra
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151215
作者单位	División Paleozoología Invertebrados, Museo de La Plata (Universidad Nacional de La Plata -UNLP), Argentina; División Paleontología Vertebrados, Museo de La Plata (UNLP), Argentina; Laboratorio de Radiocarbono (LATYR), Centro de Investigaciones Geológicas (CIG) – CONICET-UNLP, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas – CONICET, Argentina; Instituto de Geociencias de Buenos Aires (IGEBA), Universidad de Buenos Aires (FCEN), Argentina
推荐引用方式 GB/T 7714	Pérez L.M.,Toledo N.,Mari F.,et al. Radiocarbon dates of fossil record assigned to mylodontids (Xenarthra - Folivora) found in Cueva del Milodón; Chile[J],2021,251.
APA	Pérez L.M.,Toledo N.,Mari F.,Echeverría I.,Tonni E.P.,&Toledo M.J..(2021).Radiocarbon dates of fossil record assigned to mylodontids (Xenarthra - Folivora) found in Cueva del Milodón; Chile.Quaternary Science Reviews,251.
MLA	Pérez L.M.,et al."Radiocarbon dates of fossil record assigned to mylodontids (Xenarthra - Folivora) found in Cueva del Milodón; Chile".Quaternary Science Reviews 251(2021).