In the movie "The Thirteenth Warrior" the hero was killed by a poisonous claw.
a poisonous claw
Skull and bones is a Neanderthal thing.
They would collect human heads, there are piles of human skulls all though the steppes of Asia minor.
When The Jews went out doing their piracy thing, they flew the Skull and Bones flag, to signify that they were Neanderthal.