have you read "the primal blueprint" yet? you should.
i have my doubts about what it says beneath the chart about the evolutionary diet. sure, humans likely ate more plants than anything else, but there are plenty of cultures that survive on mostly meat...those that live in cold/frozen climates or were nomadic through those areas. regardless, a lot of us primal/paleo folk definitely love our meat, but the basis of these diets is really vegetables, some meat, and good sources of fat...like the kind that would salvaged from a good hunt.