There is a new paper that just came out Jan. 26, 2004 looking at the fossils of neandertals and those of other primates, including humans. The paper is free online and it would be a good exercise for everyone to look at just how much detail goes in to analyzing fossils.
Katerina Harvati, Stephen R. Frost, and Kieran P. McNulty
Neanderthal taxonomy reconsidered: Implications of 3D primate models of intra- and interspecific differences PNAS published January 26, 2004http://www.pnas.org/cgi/reprint/0308085100v1Notice how they reach their conclusion that neandertals and sapiens are separate species.
Katerina Harvati, Stephen R. Frost, and Kieran P. McNulty
Neanderthal taxonomy reconsidered: Implications of 3D primate models of intra- and interspecific differences PNAS published January 26, 2004http://www.pnas.org/cgi/reprint/0308085100v1Notice how they reach their conclusion that neandertals and sapiens are separate species.