Some of those fossils have been passed down from very early human ancestors. (sciencenews.org)
«Think of early human ancestors, where we have only scattered fossil fragments, and the problem of relying on morphology is obvious.» (discovermagazine.com)
Scrapes and grooves, supposedly cut into fossil bones by early human ancestors, are nearly indistinguishable from marks left by crocodiles» gnashing teeth, according to a new study. (sciencemag.org)