Interesting - not that the skeletal material is from
Siberia, not North America, so it most likely represents the population that was poised to enter North America.

It is fairly certain that the very earliest human remains in North America are somewhat different from both Siberian and North American populations. It is certainly worthwhile to have more data to work with.

It is also gratifying that they were able to find DNA in material this old. We tried mightily to find DNA in the Arlington Springs bones from Santa Rosa Island, but it had all leached away...