Mosaic Morphology in the Thorax of Australopithecus sediba

被引：57

作者：

Schmid, Peter ^{[1
,2
]}

Churchill, Steven E. ^{[2
,3
]}

Nalla, Shahed ^{[2
,4
]}

Weissen, Eveline ^{[1
]}

Carlson, Kristian J. ^{[2
,5
]}

de Ruiter, Darryl J. ^{[2
,6
]}

Berger, Lee R. ^{[2
]}

机构：

[1] Univ Zurich, Anthropol Inst & Museum, CH-8057 Zurich, Switzerland

[2] Univ Witwatersrand, Evolutionary Studies Inst, ZA-2050 Johannesburg, South Africa

[3] Duke Univ, Dept Evolutionary Anthropol, Durham, NC 27708 USA

[4] Univ Johannesburg, Fac Hlth Sci, Dept Human Anat & Phys, Johannesburg, South Africa

[5] Indiana Univ, Dept Anthropol, Bloomington, IN 47405 USA

[6] Texas A&M Univ, Dept Anthropol, College Stn, TX 77843 USA

来源：

SCIENCE | 2013年 / 340卷 / 6129期

基金：

新加坡国家研究基金会; 美国安德鲁·梅隆基金会;

关键词：

ARDIPITHECUS-RAMIDUS; COSTAL SKELETON; AL; 288-1; EVOLUTION; HOMO; LOCOMOTION; POSTURE; WALKING; PELVIS; RIB;

D O I：

10.1126/science.1234598

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：

The shape of the thorax of early hominins has been a point of contention for more than 30 years. Owing to the generally fragmentary nature of fossil hominin ribs, few specimens have been recovered that have rib remains complete enough to allow accurate reassembly of thoracic shape, thus leaving open the question of when the cylindrical-shaped chest of humans and their immediate ancestors evolved. The ribs of Australopithecus sediba exhibit a mediolaterally narrow, ape-like upper thoracic shape, which is unlike the broad upper thorax of Homo that has been related to the locomotor pattern of endurance walking and running. The lower thorax, however, appears less laterally flared than that of apes and more closely approximates the morphology found in humans.

引用

页数：5

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