How Do We Know This Zebra Was Food?

Stone tool marks on this zebra bone look like those made during butchery experiments. Scientists have made experimental stone tools and used them to butcher modern animals. There is a strong similarity between the marks their tools made and the marks on fossil animal bones, indicating that early humans used stone tools to butcher animals by at least 2.6 million years ago

SEM of Cut Mark on a Fossilized Bone
Landscape SEM of Cut Mark on a Modern Animal Bone.