气候变化领域集成服务门户(CCPortal): Guatemala's Late Pleistocene (Rancholabrean) fauna: Revision and interpretation

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DOI	10.1016/j.quascirev.2019.07.011
	Guatemala's Late Pleistocene (Rancholabrean) fauna: Revision and interpretation
	Dávila S.L.; Stinnesbeck S.R.; Gonzalez S.; Lindauer S.; Escamilla J.; Stinnesbeck W.
发表日期	2019
ISSN	0277-3791
起始页码	277
结束页码	296
卷号	219
英文摘要	We present a revision, dating and interpretation of the Late Pleistocene megafauna of Guatemala based on paleontological material located in collections in the country and other fossils housed in the American Museum of Natural History, New York. Assemblages are dominated by proboscideans (Cuvieronius) and xenarthrans (Eremotherium, Glyptotherium), while co-occurring Equus and Mixotoxodon are significantly less frequent, and Holmesina, Palaeolama, Tapirus, Neocherus, Mammuthus and other ground sloth taxa (Paramylodon; Megalonyx) are rare. Contrary to published records the faunal assemblage is dominated by North American faunal elements. The underrepresentation of typical South American fauna therefore suggests a more southernly located biogeographic juncture between the two subcontinents, at least for the Late Pleistocene. The biogeographical barrier was either formed by the high mountain chains, or alternating periods of low and high precipitation that triggered the intermittent expansion of either grass- or woodland, thus leading to an alternating filter for either grazers or browsers. The presence of an oak-dominated forest vegetation with Mixotoxodon, Eremotherium and Cuvieronius supports high precipitation rates during MIS 3 and 2, followed by drought during the Late Pleistocene deglaciation. The expansion of grassland during the Younger Dryas period favored the migration of Mammuthus along the Mesoamerican Corridor, which is otherwise absent in Guatemala. Our data also suggest a survival of Cuvieronius into the early Holocene in the southeastern lowlands of Guatemala along the Motagua river. Our review is important as Guatemala is key to understanding migrations along the Mesoamerican Corridor that acted as a bridge but also as a filter of faunal interchange between North- and South America. © 2019 Elsevier Ltd
英文关键词	Guatemala; Megafauna; Pleistocene
语种	英语
scopus关键词	Expansion; Early Holocene; Forest vegetation; Guatemala; Late Pleistocene; Megafauna; Natural history; Pleistocene; Precipitation rates; Animals; biogeography; fossil record; grassland; mountain environment; paleontology; Pleistocene; precipitation assessment; survival; Younger Dryas; Guatemala [Central America]; New York [United States]; South America; United States; Cuvieronius; Equus; Mammuthus; Palaeolama; sloths; Tapirus
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/151819
作者单位	Coleccion de Fosiles, Museo Historia Natural, Universidad de San Carlos de Guatemala, Calle Mariscal Cruz 1-56, Zona 10, Ciudad de Guatemala, Guatemala; Abteilung Geowissenschaften, Staatliches Museum für Naturkunde Karlsruhe, Erbprinzenstraße 13, Karlsruhe, 76133, Germany; Institut für Geographie und Geoökologie, Karlsruher Institut für Technologie (KIT), Reinhard-Baumeister-Platz 1, Karlsruhe, 76131, Germany; School of Biological and Earth Sciences, Liverpool John Moores University, Liverpool, L33AF, United Kingdom; Curt-Engelhorn-Center Archaeometry, C4, 8, Mannheim, 68159, Germany; Institut für Geowissenschaften, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 234, Heidelberg, 69120, Germany
推荐引用方式 GB/T 7714	Dávila S.L.,Stinnesbeck S.R.,Gonzalez S.,et al. Guatemala's Late Pleistocene (Rancholabrean) fauna: Revision and interpretation[J],2019,219.
APA	Dávila S.L.,Stinnesbeck S.R.,Gonzalez S.,Lindauer S.,Escamilla J.,&Stinnesbeck W..(2019).Guatemala's Late Pleistocene (Rancholabrean) fauna: Revision and interpretation.Quaternary Science Reviews,219.
MLA	Dávila S.L.,et al."Guatemala's Late Pleistocene (Rancholabrean) fauna: Revision and interpretation".Quaternary Science Reviews 219(2019).