[redheadtoo]

the opening of the nerve canal in the lower jaw, a spot where dentists often give a pain-blocking injection. In many Neanderthal, the upper portion of the opening is covered by a broad bony ridge

At last, we know the reason for the extinction of the Neanderthal, inappropriate dental care!

[SunkenCiv]

[warning: obvious joke follows] Explains why Neandertal remains are starting to turn up in Britain...