Life and death of the ground sloth Xibalbaonyx oviceps from the Yucatán Peninsula, Mexico

Life and death of the ground sloth Xibalbaonyx oviceps from the Yucatán Peninsula, Mexico
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墨西哥尤卡坦半岛地懒 Xibalbaonyx oviceps 的生与死

DOI:
10.1080/08912963.2020.1819998
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发表时间:
2021
期刊:
影响因子:
1.4
通讯作者:
Stinnesbeck
Stinnesbeck
中科院分区:
地球科学3区
文献类型:
--
作者:
Stinnesbeck;Avilés Olguín;González González;Velázquez Morlet;Stinnesbeck

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在墨西哥东南部的金塔纳罗奥的水下洞穴系统中正在进行的调查揭示了丰富的晚更新世巨型动物组合,其中包括巨爪类地懒Xibalbaonyx oviceps。该分类群已被描述为基于一个完整的头骨和下颌骨从萨尔瓦多萨波特cenote西部的波多黎各莫雷洛斯。我们在此添加了来自El Zapote的迄今未报道的颅后材料,这些材料被认为是正模标本。这种新材料使我们能够重建Xibalbaonyx oviceps意想不到的运动能力,包括陡坡和攀岩。这可能使地懒能够利用天坑和地下洞穴作为水资源和庇护所。化石的更新世晚期允许与尤卡坦半岛上的早期人类定居者共存。
Ongoing investigations in submerged cave systems of Quintana Roo in south-eastern Mexico reveal a rich Late Pleistocene megafaunal assemblage, among them the megalonychid ground slothXibalbaonyx oviceps. The taxon has been described based on a complete skull and mandible from El Zapote cenote west of Puerto Morelos. We here add hitherto unreported postcranial material from El Zapote, attributed to the holotype. This new material allows us to reconstruct unexpected locomotion capabilities forXibalbaonyx ovicepsincluding steep slope and rock climbing. This may have enabled the ground sloth to use the sinkholes and underground caverns as water resource and shelter. The Late Pleistocene age of the fossil allows for a co-existence with early human settlers on the Yucatán Peninsula.
Xibalbaonyx oviceps,墨西哥尤卡坦半岛晚更新世的一种新巨爪地懒(Folivora,Xenarthra)及其古生物地理学意义
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