An analysis of fossil teeth suggests that the shared ancestor of modern humans and our Neanderthal cousins may have lived more than 800,000 years ago
Source:
https://www.newscientist.com/article/2203263-did-we-split-from-neanderthals-400000-years-earlier-than-we-thought/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home