Leopards may have feasted on our earliest ancestors

It took a while for humans to climb the food chain. Breakthroughs, discoveries, and DIY tips sent every weekday. Most paleobiologists believe humanity truly began around 2 million years ago with a species known as . Part of this evolutionary demarcation stems from the theory that the early hominins were some of the first primates to consistently shift from the role of "prey" to that of "predator." But according to an analysis of tiny injuries on two fossilized jaw fragments, some researchers now believe our ancestors required a bit more time to ascend the food chain.