An early Australopithecus afarensis postcranium from Woranso-Mille, Ethiopia

被引:168
作者
Haile-Selassie, Yohannes [1 ,3 ,4 ]
Latimer, Bruce M. [1 ,3 ,4 ]
Alene, Mulugeta [5 ]
Deino, Alan L. [6 ]
Gibert, Luis [6 ]
Melillo, Stephanie M. [7 ]
Saylor, Beverly Z. [2 ]
Scott, Gary R. [6 ]
Lovejoy, C. Owen [1 ,8 ]
机构
[1] Cleveland Museum Nat Hist, Cleveland, OH 44106 USA
[2] Case Western Reserve Univ, Dept Geol Sci, Cleveland, OH 44106 USA
[3] Case Western Reserve Univ, Dept Anthropol, Cleveland, OH 44106 USA
[4] Case Western Reserve Univ, Inst Sci Origins, Cleveland, OH 44106 USA
[5] Univ Addis Ababa, Dept Earth Sci, Addis Ababa 1176, Ethiopia
[6] Berkeley Geochronol Ctr, Berkeley, CA 94709 USA
[7] Stanford Univ, Dept Biol, Stanford, CA 94305 USA
[8] Kent State Univ, Sch Biomed Sci, Dept Anthropol, Kent, OH 44242 USA
基金
美国国家科学基金会;
关键词
bipedality; human evolution; upright walking; hominid; thorax; NATURAL-HISTORY; CENTRAL AFAR; HUMAN GAIT; HADAR FORMATION; AL; 288-1; HOMINID; MORPHOLOGY; HOMINOIDS; POSTURE; BEARING;
D O I
10.1073/pnas.1004527107
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Only one partial skeleton that includes both forelimb and hindlimb elements has been reported for Australopithecus afarensis. The diminutive size of this specimen (A. L. 288-1 ["Lucy"]) has hampered our understanding of the paleobiology of this species absent the potential impact of allometry. Here we describe a large-bodied (i.e., well within the range of living Homo) specimen that, at 3.58 Ma, also substantially antedates A. L. 288-1. It provides fundamental evidence of limb proportions, thoracic form, and locomotor heritage in Australopithecus afarensis. Together, these characteristics further establish that bipedality in Australopithecus was highly evolved and that thoracic form differed substantially from that of either extant African ape.
引用
收藏
页码:12121 / 12126
页数:6
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