气候变化领域集成服务门户(CCPortal): A monodominant late-Pleistocene megafauna locality from Santa Elena; Ecuador: Insight on the biology and behavior of giant ground sloths

CCPortal

DOI	10.1016/j.palaeo.2020.109599
	A monodominant late-Pleistocene megafauna locality from Santa Elena; Ecuador: Insight on the biology and behavior of giant ground sloths
	Lindsey E.L.; Lopez Reyes E.X.; Matzke G.E.; Rice K.A.; McDonald H.G.
发表日期	2020
ISSN	0031-0182
卷号	544
英文摘要	Extinct giant ground sloths are a common taxon in New World Quaternary deposits, but relatively little is known about individual species' behavior or social structure. In this paper, we investigate the development of the late-Pleistocene locality Tanque Loma on the southwest coast of Ecuador, which preserves remains of at least 22 individuals of the giant ground sloth, Eremotherium laurillardi in asphaltic sediments. Multiple lines of evidence suggest that these sloths may have congregated and died in a mass mortality event in a marshy riparian habitat. Such evidence includes (1) a dense, laterally-extensive, bonebed-style accumulation; (2) a multigenerational age structure with adult and large juvenile individuals well-represented; (3) sediments suggestive of a low-energy anoxic aquatic environment; and (4) the presence of abundant plant material consistent with digested fodder representing coprolites or gut contents of E. laurillardi. Taking observations from modern megafaunal ecosystems as an analogue, we suggest that this death event could have resulted from drought and/or disease stemming from the contamination of the wallow, paralleling situations observed among hippopotamus populations in watering holes on the present-day African savannah. © 2020
英文关键词	Bone bed; Hippopotamus; Quaternary Neotropics; Sociality; Taphonomy; Wallowing
语种	英语
scopus关键词	age structure; drought; mammal; morphology; Neotropical Region; Pleistocene; savanna; taphonomy; type locality; Ecuador; Santa Elena; sloths
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150570
作者单位	La Brea Tar Pits, 5801 Wilshire Blvd., Los Angeles, CA 90036, United States; Universidad Estatal Península de Santa Elena, Av. Eleodoro Solorzano, La Libertad, Ecuador; Department of Geography, College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States; United States Bureau of Land Management, Colorado State Office, 2850 Youngfield St, Lakewood, CO 80215, United States
推荐引用方式 GB/T 7714	Lindsey E.L.,Lopez Reyes E.X.,Matzke G.E.,et al. A monodominant late-Pleistocene megafauna locality from Santa Elena; Ecuador: Insight on the biology and behavior of giant ground sloths[J],2020,544.
APA	Lindsey E.L.,Lopez Reyes E.X.,Matzke G.E.,Rice K.A.,&McDonald H.G..(2020).A monodominant late-Pleistocene megafauna locality from Santa Elena; Ecuador: Insight on the biology and behavior of giant ground sloths.Palaeogeography, Palaeoclimatology, Palaeoecology,544.
MLA	Lindsey E.L.,et al."A monodominant late-Pleistocene megafauna locality from Santa Elena; Ecuador: Insight on the biology and behavior of giant ground sloths".Palaeogeography, Palaeoclimatology, Palaeoecology 544(2020).