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Faithful Ancestors

Researchers debate claims of monogamy for Lucy and her ancient kin

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10:48am, June 6, 2005

A weird kind of creature strode across the eastern African landscape from around 4 million to 3 million years ago. Known today by the scientific label Australopithecus afarensis, these ancient ancestors of people may have taken the battle of the sexes in a strange direction, for primates at any rate. True, no one can re-create with certainty the court and spark that led to sexual unions between early hominids. Nothing short of a time machine full of scientifically trained paparazzi could manage that trick.

All is not lost, though. Scientists are looking to fossil remains of A. afarensis to provide, as a prehistoric tabloid would, a revealing exposé of the hominid's intimate tendencies. A statistical analysis 2 years ago indicated that A. afarensis males exhibited only a moderate size advantage over females, rather than the larger difference seen in gorillas. According to Owen Lovejoy and Philip L. Reno, both of Kent (Ohio) State University, w

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