External and internal morphology of the BAR 1002′00 Orrorin tugenensis femur

被引：82

作者：

Galik, K

Senut, B

Pickford, M

Gommery, D

Treil, J

Kuperavage, AJ

Eckhardt, RB ^{[1
]}

机构：

[1] Penn State Univ, Dept Kinesiol, Lab Comparat Morphol & Mech, University Pk, PA 16802 USA

[2] Allegheny Gen Hosp, Orthopaed Biomech Lab, Pittsburgh, PA 15212 USA

[3] Museum Natl Hist Nat, CNRS, UMR 5143, Dept Hist Terr, F-75231 Paris 05, France

[4] Coll France, Chaire Paleonanthropol & Prehist, F-75231 Paris 05, France

[5] CNRS, UPR 2147, F-75014 Paris, France

[6] CNRS, GDR 983, F-75005 Paris, France

[7] CNRS, UMR 8555, Serv Radiol, F-31300 Toulouse, France

[8] Clin Pasteur, Serv Radiol, F-31300 Toulouse, France

来源：

SCIENCE | 2004年 / 305卷 / 5689期

关键词：

D O I：

10.1126/science.1098807

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：

Late Miocene fossils from the Lukeino Formation in Kenya's Tugen Hills are assigned to Orrorin tugenensis. Of 20 fossils recovered there to date, 3 are proximal femurs. One of these, BAR 1002'00, preserves an intact head connected to the proximal shaft by an elongated neck. Although this fossil is comparable in size to Pan troglodytes, computerized tomography scans of the neck-shaft junction of BAR 1002'00 reveal that the cortex is markedly thinner superiorly than inferiorly, differing from the approximately equal cortical thicknesses observed in extant African apes, approaching the condition in later hominids, and indicating that O. tugenensis was bipedal.

引用

页码：1450 / 1453

页数：4

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