An extinct monkey from Haiti and the origins of the Greater Antillean primates
An extinct monkey from Haiti and the origins of the Greater Antillean primates
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DOI：
10.1073/pnas.1009161108
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发表时间：
2011-02-15
影响因子：
11.1
通讯作者：
Turvey, Samuel
中科院分区：
文献类型：
--
作者：
Cooke, Siobhan B.;Rosenberger, Alfred L.;Turvey, Samuel
这里描述了一种来自海地的新灭绝的晚第四纪阔叶草，即 insulacebus toussaintiana，它来自迄今为止记录的最完整的加勒比亚化石灵长类动物牙列，这表明伊斯帕尼奥拉岛上可能有两种灵长类动物共存。与其他加勒比阔叶草一样，I. toussaintiana 表现出类似于中中新世早期巴塔哥尼亚化石的原始特征，反映了现代新世界类人猿群落形成之前的早期衍生。这与化石的年轻年龄相结合，提供了一个独特的机会来研究鸭嘴兽的不同平行辐射，这些鸭嘴兽一直存活到现代，但与现存的大陆形式只有遥远的联系。它们独特的牙齿比例和相对较大的估计体重表明了它们的生态新颖性，这可能是岛屿效应，使该群体处于南美大陆猴子未开发的体型类别中。有几个特征将这个新物种与已灭绝的牙买加猴 Xenothrix mcgregori 联系起来，这或许为安的列斯群岛之间的分支提供了额外的证据。
A new extinct Late Quaternary platyrrhine from Haiti, insulacebus toussaintiana, is described here from the most complete Caribbean subfossil primate dentition yet recorded, demonstrating the likely coexistence of two primate species on Hispaniola. Like other Caribbean platyrrhines, I. toussaintiana exhibits primitive features resembling early Middle Miocene Patagonian fossils, reflecting an early derivation before the Amazonian community of modern New World anthropoids was configured. This, in combination with the young age of the fossils, provides a unique opportunity to examine a different parallel radiation of platyrrhines that survived into modern times, but is only distantly related to extant mainland forms. Their ecological novelty is indicated by their unique dental proportions, and by their relatively large estimated body weights, possibly an island effect, which places the group in a size class not exploited by mainland South American monkeys. Several features tie the new species to the extinct Jamaican monkey Xenothrix mcgregori, perhaps providing additional evidence for an inter-Antillean clade.