Polycarp1 said:
Just for the record, the Neanderthal characteristics which Ark Guy outlines (and indicates that Dr. Cuozzo saw as trends in aged people) are those of "Classic Neanderthals" who lived in Europe and adjacent Asia (e.g., western Kazakhstan) during the last (Würm or Wisconsin) glaciation. Other Neanderthals, with less emphatic characteristics, lived in the Middle East prior to this time, and are often referred to as "Levantine Neanderthals" to make the distinction between them and the later Classic, European ones.
Right. Notice that, as time goes on, the neanderals become
more neandertal. That is, they exhibit more specialized traits that distinguish them from H. sapiens. If there were gene flow between sapiens and neandertal, this would not be happening.
Paleoanthropologists are strongly divided between deeming them a subspecies of Homo sapiens and a separate species, Homo neanderthalensis, quite closely related to us; the latter view seems to be gaining acceptance over the past decade or so. Standing against this is a find in Spain containing skeletons with both Neanderthal and "true human" (i.e., biologically Homo sapiens) characters, suggesting that they were the products of intergroup mating.
It's
one fossil. Not plural skeletons. One individual, and a kid. The characters also fall within the variability of stocky humans.
6. Ian Tattersall*, and Jeffrey H. Schwartz, Commentary Hominids and hybrids: the place of Neanderthals in human evolution PNAS 96, Issue 13, 7117-7119, June 22, 1999
http://www.pnas.org/cgi/content/full/96/13/7117
The DNA data is pretty much clinching it. There are simply no old DNA sequences in the sapiens genome, and those would be there if there had been significant interbreeding with neandertals that produced fertile hybrids. There may still have been the occasional rape or marriage and the production of the occasional hybrid, but it appears that, if this is so, the F1 hybrid was either sterile or less fit and did not breed back into the sapiens population.
11. A Gibbons, Modern men trace ancestry to African migrants. Science 292:1051-1052, May 11, 2001. Y chromosome of EVERY person in the study could be traced to forefathers who lived in Africa 35,000 to 89,000 years ago. "one self-described 'dedicated multiregionalist,' Vince Sarich of the University of California, Berkeley, admitted: 'I have undergone a conversion -- a sort of epiphany. There are no old Y chromosomes lineages. There are no old mtDNA lineages. Period. It was a total replacement.' " In another study, Peter Underhill and colleagues analyzed 218 markers in 1062 men from 21 populations.Primary paper is Y Ke, B Su, D Lu, L Chen, H Li, C Qi, S Marzuki, R Deka, P Underhill, C Xiao, M Shriver, J Lell, D Wallace, RS Wells, M Selestad, P Oefner, D Zhu, W Huang, R Chakraborty, Z Chen, L Jin, African Origin of modern humans in east Asia: a tale of 12,000 Y chromosomes. Science 292: 1151-1153, May 11, 2001.
It's also worth noting that at least some Neanderthals had funeral customs -- excavations of Neanderthal graves in Eastern Europe have found them with the brittle, dried remnants of flowers placed on the corpse. To me there is something singularly poignant in this.
And very troubling for creationists. It indicates that neandertals had an idea of an afterlife. That makes them just like humans theologically but not humans.