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Updated: Jun 12, 2026

A Neural Implant Design Toolbox for Nonhuman Primates
Published on: February 9, 2024
An early Australopithecus afarensis postcranium from Woranso-Mille, Ethiopia
Yohannes Haile-Selassie1, Bruce M Latimer, Mulugeta Alene
1The Cleveland Museum of Natural History, Cleveland, OH 44106, USA. yhailese@cmnh.org
Abstract:
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.
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