[SunkenCiv]

Yes, it's another instance of mammoth told me there'd be days like these...

The Neandertal Enigma
by James Shreeve

Frayer's own reading of the record reveals a number of overlooked traits that clearly and specifically link the Neandertals to the Cro-Magnons. One such trait is the shape of the opening of the nerve canal in the lower jaw, a spot where dentists often give a pain-blocking injection. In many Neandertal, the upper portion of the opening is covered by a broad bony ridge, a curious feature also carried by a significant number of Cro-Magnons. But none of the alleged 'ancestors of us all' fossils from Africa have it, and it is extremely rare in modern people outside Europe." [pp 126-127]

[ComputerGuy]

I've got one on each side - several dentists have commented on them because they are very pronounced.
Until now I never knew anything about them, other than they are only present in a relatively small group of the population.
My wife has called me a Neanderthal a time or two.
I'm going to ask her to change that to Cro-Magnon.