mikerob wrote:I thought the DNA evidence for "out of Africa" was pretty overwhelming.
So there is a lot less variation in DNA for humans in regions outside Africa than there is within Africa, implying that a small group of humans migrated out of Africa some time after humans had been established within Africa.
Homo sapiens almost certainly originated in Africa, around 200K years ago, with some possible later admixture from other Homo species or homo sapiens subspecies. The latter classifications are still fairly fluid as far as I am aware.
This article, despite the misleading headline, is about the origin of hominins, which they define as “humans and their non-ape ancestors“.
So hominins, to use their terminology, are though to originate in Africa anywhere from 5 to 10 million years ago. It gets a bit complex because hybrid speciation might well have taken place. You have chromosomes which suggest a split from a common ancestor (chimp and humans) 5m years ago, while others suggest a split millions of years before that. There are of course alternative explanations for this.
Anyway, this study is based on an isolated premolar found in Bulgaria so the authors are rather more cautious than apparent from the DT piece:
“Therefore, we submit that the dental root attributes of Graecopithecus suggest hominin affinities, such that its hominin status cannot be excluded. If this status is confirmed by additional fossil evidence, Graecopithecus would be the oldest known hominin…….”