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An omomyid primate from the Pontide microcontinent of north-central Anatolia: Implications for sweepstakes dispersal of terrestrial mammals during the Eocene
Geobios ( IF 1.6 ) Pub Date : 2020-08-05 , DOI: 10.1016/j.geobios.2020.06.008
K. Christopher Beard , Grégoire Métais , Faruk Ocakoğlu , Alexis Licht

A new genus and species of omomyid primate is described from the middle Eocene (Lutetian) Lülük Member of the Uzunçarşidere Formation, Orhaniye Basin, north-central Anatolia, Turkey. This is the first Eocene primate to be reported from the vast area between Switzerland and Pakistan. The new taxon is currently represented by a single dentary fragment, limiting the scope of morphological comparisons that can be made with related taxa. Nevertheless, its dentition differs fundamentally from that of contemporary European microchoerids. The new taxon most closely resembles North American middle Eocene omomyines such as Mytonius hopsoni, and it is therefore interpreted as a member of the Asian/North American omomyine radiation. Its occurrence on the Pontide microcontinent must have resulted from sweepstakes dispersal across the intervening Tethyan barrier that separated the Pontides from adjacent parts of Eurasia during the Lutetian. Sweepstakes dispersal by various terrestrial mammal clades, especially rodents and primates, was facilitated by Eocene greenhouse climatic conditions, which promoted extreme precipitation events and frequent flooding of major river drainages.



中文翻译:

来自安纳托利亚中北部 Pontide 微大陆的 omomyid 灵长类动物:对始新世期间陆地哺乳动物的抽奖活动扩散的影响

描述了来自土耳其安纳托利亚中北部奥尔哈尼耶盆地 Uzunçarşidere 组中始新世 (Lutetian) Lülük 成员的 omomyid 灵长类动物的新属和种。这是第一个从瑞士和巴基斯坦之间的广大地区报道的始新世灵长类动物。新分类群目前由单个齿状片段表示,限制了可以与相关分类群进行形态比较的范围。然而,它的牙列与当代欧洲微科动物的牙列有着根本的不同。新分类群与北美洲始新世中期 omomyines 最相似,例如Mytonius hopsoni,因此它被解释为亚洲/北美 omomyine 辐射的成员。它在 Pontide 微大陆上的出现一定是由于抽奖活动在卢特世时期穿过将 Pontides 与欧亚大陆相邻部分隔开的特提斯屏障而引起的。始新世温室气候条件促进了各种陆生哺乳动物进化枝,尤其是啮齿动物和灵长类动物的抽奖传播,这促进了极端降水事件和主要河流排水系统的频繁洪水。

更新日期:2020-08-05
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