Yyup. But there's a fair amount of skeletal evidence that suggests the contrary. I've always been a bit wary about fully trusting DNA evidence, personally.
Oh, me too. That's why looking at a convergence of evidence from multiple lines of inquiry and making sure that they all tell the same story.
Which, in this case, they don't clearly.
Wik said:
Possibly. Tell that to my anthropology instructors, though. At least among anthropologists, those who say "Homo Sapiens Sapiens" tend to be those who believe Neanderthals bred into the species, while those who do not tend to believe otherwise. I have no idea how it is outside of anthropology.
Ironically, those who favor a separate species (instead of subspecies) did it based on prior mtDNA studies, which showed no evidence of genetic interaction. Papers by Pennisi (Science 323 (5916) 2009), Green and Briggs, et. al (EMBO Journal 28(17) 2009) find no such evidence in the Neanderthal genome project.
So, like I said, I think the linked article here is interesting and intriguing, but it's not a slam-dunk. It's just one piece of the puzzle.
Wik said:
As someone who has actually held replicas of archaic homo sapiens and Neanderthal skulls, I can attest that the bun is not there in archaic sapiens. And it is not extremely rare - I believe the number is around 25% in some populations. It's possible we're talking about different things, though. I can say that everyone in my family has one (except for my dad, I believe). And I know in my anth classes, there were a fair number of students in the class that had one.
Lieberman, Pearson and Mowbray, "Basicranial Influence on overall crianial shape," Human Evolution 38 (2) 291-315, 1999.
Plus, I'm talking about relative frequency. And the occipital buns of
Homo sampiens sapiens are only superficially similar to that of
Homo sapiens neanderthalensis. And the presence of them is relatively high on populations that couldn't ever have had any contact with Neanderthals, even according to this article, like South African bushmen.
I think it's (at best) a hard sell to say that because you can feel a knot at the back of your head, you inherited that from a Neanderthal ancestor. That's just not a compelling story. It being an unrelated convergent feature related to space allocation of the brain, especially in dolicocephalic individuals, seems much more likely.
And just because you've held a few specimens doesn't mean that it wasn't more common in archaic AMH (anatomically modern humans.) You've gotta do a census of hundreds of finds (at least) to do that. And those censuses have been done. And they
were more common in archaic AMH than in later AMH.
Wik said:
Remember that humans, due to their development of culture, were able to survive harsh elements (look at the Inuit, who are technically a "stone age" culture). So I think it can be difficult to say "no one was living there" - especially because the first neanderthal was found in, what, northern france? Germany? Something like that ("Neanderthal" being german for "New Man Dale", because it was found in a stone quarry owned by a guy whose name was Neuman and translated it into the local german).
Yeah, but we're talking about
on the ice sheet. Hundreds of miles from any source of food whatsoever.
They didn't live in Denmark or Finland or any place like that when it was miles under the ice.
Wik said:
A theory I've heard is that the neanderthals, due to a lower birth rate, were forced to hide from the more numerous humans, and were forced to the periphery of human lands - which would be why we'd see them in icy climates.
The latest surviving Neanderthal fossils are found Gibraltar and Portugal from about 24,000 years ago, not icy climates. Although that's not quite as solid as we'd like and the interpretation is a bit controversial, and the next youngest are from Croatia about 32,000 years ago.