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A juvenile early hominin skeleton from Dikika, Ethiopia

机译:来自埃塞俄比亚迪基卡的少年早期人源骨骼

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摘要

Understanding changes in ontogenetic development is central to the study of human evolution. With the exception of Neanderthals, the growth patterns of fossil hominins have not been studied comprehensively because the fossil record currently lacks specimens that document both cranial and postcranial development at young ontogenetic stages. Here we describe a well-preserved 3.3-million-year-old juvenile partial skeleton of Australopithecus afarensis discovered in the Dikika research area of Ethiopia. The skull of the approximately three-year-old presumed female shows that most features diagnostic of the species are evident even at this early stage of development. The find includes many previously unknown skeletal elements from the Pliocene hominin record, including a hyoid bone that has a typical African ape morphology. The foot and other evidence from the lower limb provide clear evidence for bipedal locomotion, but the gorilla-like scapula and long and curved manual phalanges raise new questions about the importance of arboreal behaviour in the A. afarensis locomotor repertoire.
机译:了解个体发育的变化对人类进化的研究至关重要。除尼安德特人外,尚未对化石人参素的生长方式进行全面研究,因为化石记录目前缺乏记录年轻个体发育时期颅骨和颅后发育的标本。在这里,我们描述了在埃塞俄比亚Dikika研究区发现的保存完好的330万年前的非洲南方古猿少年部分骨骼。大约三岁的假定雌性的头骨显示,即使在发育的早期阶段,对该物种的大多数特征诊断也很明显。该发现包括上新世人类素记录中许多以前未知的骨骼元素,包括具有典型非洲猿形态的舌骨。脚和下肢的其他证据为两足动物的运动提供了明确的证据,但是大猩猩状的肩骨和长而弯曲的手指骨提出了树栖行为在Afarensis的运动功能库中的重要性的新问题。

著录项

  • 来源
    《Nature》 |2006年第7109期|p. 296-301|共6页
  • 作者单位

    Max Planck Inst Evolutionary Anthropol, Dept Human Evolut, D-04103 Leipzig, Germany;

    Univ Coll London, Dept Anat & Dev Biol, London WC1E 6BT, England;

    Arizona State Univ, Sch Human Evolut & Social Change, Inst Human Origins, Tempe, AZ 85287 USA;

    Univ Georgia, Dept Anthropol, Athens, GA 30602 USA;

    CNRS, UPR 2147, F-75014 Paris, France;

    Univ Texas, Dept Anthropol, Austin, TX 78712 USA;

    Univ St Andrews, Sch Geog & Geosci, St Andrews KY16 9AL, Fife, Scotland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

    HADAR FORMATION; AUSTRALOPITHECUS-ANAMENSIS; 1974-1977 COLLECTIONS; EVOLUTION; MORPHOLOGY; AFARENSIS; PRIMATES; REMAINS; WALKING;

    机译:哈德族形成;澳大利亚白垩纪;1974-1977年集合;演化;形态学;象术;底质;剩余;行走;

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