How odd.
If by “ridge”, you mean not flat or round but having a distinct “peak” sort of thing, I have that, too.
[and SunkenCiv *always* pings me to the Neanderthal lists just to provoke me]....:))
Yum.
Tasty, tasty birch bark.
We are probably cousins 234,682 times removed
Were any of your ancestors Norwegian? I've read that many Norwegians added bark to their bread to stretch their food resources during the Nazi occupation.
PS, I think that I have that jaw deal too.