Late Pleistocene Paramylodon harlani (Xenarthra, Mylodontidae) from Térapa, Sonora, Mexico

IF 2.3 Q2 GEOSCIENCES, MULTIDISCIPLINARY Quaternary Pub Date : 2023-05-07 DOI:10.3390/quat6020031
H. Gregory McDonald, J. Mead, Sandra L. Swift
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Abstract

While the North American mylodont sloth, Parmylodon harlani, has been identified in multiple localities in Mexico, most of these records are from the southern part of the country. Consequently, there is a large geographic gap between its distribution in Mexico and the more northern records of the species in the United States. The recovery of the remains of multiple individuals of Paramylodon harlani, as part of a late Pleistocene fauna in San Clemente de Térapa, Sonora, Mexico, partially fills this geographic gap and provides a broader understanding of the differences in the species’ ecology over a wide latitudinal range. A comparison of the paleoecology of the Térapa site with other sites with P. harlani in the fauna to the south and north provides valuable information on how regional topography and different plant communities impact the sloth’s distribution and underlying causes for its extinction.
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来自墨西哥索诺拉州Térapa的晚更新世哈雷副弯齿虫(异构虫目,Mylodontiae)
虽然在墨西哥的多个地方已经发现了北美糜齿树懒Parmylodon harlani,但这些记录大多来自该国南部。因此,它在墨西哥的分布与美国更北部的物种记录之间存在很大的地理差距。作为墨西哥索诺拉州圣克莱门特德Térapa更新世晚期动物群的一部分,哈拉尼副齿龙多个个体的遗骸的发现部分填补了这一地理空白,并使人们更广泛地了解了该物种在宽纬度范围内的生态差异。将Térapa遗址的古生态学与南部和北部动物群中其他具有P.harlani的遗址进行比较,可以提供关于区域地形和不同植物群落如何影响树懒分布及其灭绝的根本原因的宝贵信息。
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来源期刊
Quaternary
Quaternary GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
3.30
自引率
4.30%
发文量
44
审稿时长
11 weeks
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