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Plio-Pleistocene mammals from Mille-Logya, Ethiopia, and the post-Hadar faunal change
Journal of Quaternary Science ( IF 2.3 ) Pub Date : 2021-07-16 , DOI: 10.1002/jqs.3345
Denis Geraads 1 , Denne Reed 2 , W. Andrew Barr 3 , René Bobe 4, 5 , Peter Stamos 6 , Zeresenay Alemseged 6
Affiliation  

We describe the non-primate mammalian fauna from the late Pliocene to earliest Pleistocene deposits of Mille-Logya in the Lower Awash Valley, Ethiopia, dated to c. 2.9–2.4 Ma, and divided into three successive units: Gafura, Seraitu, and Uraitele. We identify 41 mammalian taxa (including rodents), the most diverse group being the Bovidae, with 17 taxa. While the Gafura assemblage still resembles those from the earlier Hadar Formation, the younger Seraitu assemblage documents a major turnover. While there is little change in the species present across this interval, the relative abundances of various taxa change dramatically, with suids being largely replaced by open-country bovids (Alcelaphini and Antilopini). We interpret this faunal change as reflective of an environmental shift, contemporaneous with the replacement of Australopithecus afarensis by Homo in the area.

中文翻译:

来自埃塞俄比亚 Mille-Logya 的上新世哺乳动物和后哈达尔动物群变化

我们描述了从上新世晚期到更新世最早的位于埃塞俄比亚下阿瓦什河谷的 Mille-Logya 矿床的非灵长类哺乳动物动物群,其历史可以追溯到公元前。2.9-2.4 Ma,并分为三个连续单元:Gafura、Seraitu 和 Uraitele。我们确定了 41 个哺乳动物类群(包括啮齿类动物),最多样化的群体是牛科,有 17 个类群。虽然 Gafura 组合仍然类似于早期 Hadar 组的组合,但较年轻的 Seraitu 组合记录了一个重大的转变。虽然在这个区间内存在的物种几乎没有变化,但各种分类群的相对丰度发生了巨大变化,suids 在很大程度上被开放国家的牛科动物(Alcelaphini 和 Antilopini)所取代。我们将这种动物群变化解释为环境转变的反映,与替代该地区的人类南方古猿阿法种。
更新日期:2021-08-03
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