| Abstract: |
Sr/Ca ratios are normally reduced at higher trophic levels in foodwebs, due to discrimination against strontium in favor of calcium by animals. This phenomenon has not generally been applied to the study of fossil foodwebs and the iets of early hominids because of diagenetic changes which obscure or obliterate biological Sr/Ca. Results of <i>A. robustus</i> were inconsistent with that of a root, rhizome or seed-eating herbivore, suggesting that the diet of this species was more diverse than previously believed, and almost certainly included the consumption of animal foods.
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