This new Skeletons vector pack from Vector set 14 contains detailed vector bones, rib cages, teeth, animal skulls, spinal cords, claws, some full skeletons and more.
And, you can use the artwork, or parts of the artwork, in your personal or commercial work! Click this link to see the full Skeletons Vector pack.
While you're at it, check out this cool 8 step tutorial by Nick Beaulieu on creating a wicked looking skull in Illustrator.
Source: Go Media