Early humans and Neanderthals may have clashed violently during their brief coexistence in Europe, a new study suggests, and humans may have either eaten their Neanderthal opponents or taken their teeth as trophies. Anthropologist Fernando Rozzi and his colleagues conducted a new analysis of a jawbone found in a cave in southwest France. They say that the jawbone probably belonged to a Neanderthal, and that it shows cut marks similar to those found on reindeer that were butchered by early humans. Rozzi believes that the jawbone was cut in the process of removing flesh and the tongue, a technique also used on the deer that early humans frequently fed on. He believes this proves that Neanderthals were fair game for human consumption, too.