Early man was a vegetarian. Apparently grazed on grasses with Zebras, Pigs and Hippos.

Hmm, so early man was a vegetarian after all.

For decades, a 2.3 million- to 1.2 million-year-old human relative named Paranthropus boisei has been nicknamed Nutcracker Man because of his big, flat molar teeth and thick, powerful jaw. But a definitive new University of Utah study shows that Nutcracker Man didn't eat nuts, but instead chewed grasses and possibly sedges -- a discovery that upsets conventional wisdom about early humanity's diet.

Study co-author Kevin Uno, a University of Utah Ph.D. student in geology, adds: "This study provides evidence that Paranthropus boisei was not cracking nuts, but was instead eating mainly tropical grasses or sedges. It was not competing for food with most other primates, who ate fruits, leaves and nuts; but with grazers -- zebras' ancestors, suids [ancestors of pigs and warthogs] and hippos."

[link to www.sciencedaily.com]