来自埃塞俄比亚阿法尔戈纳古人类学研究项目地区的中新世晚期古人类牙齿。
Late Miocene hominin teeth from the Gona Paleoanthropological Research Project area, Afar, Ethiopia.
作者信息
Simpson Scott W, Kleinsasser Lynnette, Quade Jay, Levin Naomi E, McIntosh William C, Dunbar Nelia, Semaw Sileshi, Rogers Michael J
机构信息
Department of Anatomy, Case Western Reserve University School of Medicine, Cleveland, OH 44106-4930, USA; Institute for the Science of Origins, Case Western Reserve University, Cleveland, OH 44106, USA; Laboratory of Physical Anthropology, Cleveland Museum of Natural History, Cleveland, OH 44106, USA.
Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA; Barrick Cortez, HC 66 Box 1250, Crescent Valley, NV 89821 USA.
出版信息
J Hum Evol. 2015 Apr;81:68-82. doi: 10.1016/j.jhevol.2014.07.004. Epub 2015 Mar 18.
Since 2000, significant collections of Latest Miocene hominin fossils have been recovered from Chad, Kenya, and Ethiopia. These fossils have provided a better understanding of earliest hominin biology and context. Here, we describe five hominin teeth from two periods (ca. 5.4 Million-years-ago and ca. 6.3 Ma) that were recovered from the Adu-Asa Formation in the Gona Paleoanthropological Research Project area in the Afar, Ethiopia that we assign to either Hominina, gen. et sp. indet. or Ardipithecus kadabba. These specimens are compared with extant African ape and other Latest Miocene and Early Pliocene hominin teeth. The derived morphology of the large, non-sectorial maxillary canine and mandibular third premolar links them with later hominins and they are phenetically distinguishable and thus phyletically distinct from extant apes.
自2000年以来，在乍得、肯尼亚和埃塞俄比亚发现了大量最新中新世古人类化石。这些化石让人们对最早的古人类生物学和背景有了更好的了解。在此，我们描述了从埃塞俄比亚阿法尔地区戈纳古人类学研究项目区域的阿杜-阿萨地层中发现的来自两个时期（约540万年前和约630万年前）的五颗古人类牙齿，我们将其归类为人亚族（属和种未定）或卡达巴地猿。这些标本与现存非洲猿以及其他最新中新世和上新世早期古人类牙齿进行了比较。大型、非扇形上颌犬齿和下颌第三前磨牙的衍生形态将它们与后来的古人类联系起来，并且它们在表型上可区分，因此在系统发育上与现存猿类不同。
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