Title

An Enlarged Postcranial Sample Confirmsaustralopithecus Afarensis Dimorphism Was Similar to Modern Humans

Publication Title

Philosophical Transactions of the Royal Society B

Publication Date

10-2010

Document Type

Article

DOI

10.1098/rstb.2010.0086

Keywords

A.L. 333, taphonomy, monogamy, skeletal dimorphism, modelling

Disciplines

Anthropology

Abstract

In a previous study, we introduced the template method as a means of enlarging the Australopithecus afarensis postcranial sample to more accurately estimate its skeletal dimorphism. Results indicated dimorphism to be largely comparable to that of Homo sapiens. Some have since argued that our results were biased by artificial homogeneity in our Au. afarensis sample. Here we report the results from inclusion of 12 additional, newly reported, specimens. The results are consistent with those of our original study and with the hypothesis that early hominid demographic success derived from a reproductive strategy involving male provisioning of pair-bonded females.

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