I’m not exactly a comic book scholar, so a lot of things about this TV spot for X-Men Origins: Wolverine came as a surprise to me.  For one thing, Wolverine apparently grew up in the antebellum south (or in whatever setting it is in which they use flint-lock pistols and have chandeliers made of antlers).  For another, his claws are made out of bone.  I always thought the claws were added on when they covered his skeleton in adamantium, but according to Wikipedia, it was revealed in 1993 that he’d always had claws of bone.  As writer Peter Allen David told comicbookresources:

Actually, what happened was that we were all discussing how we were going to have Magneto’s return be a big deal. The other writers were bouncing around the notion of a huge Magneto/Wolverine slugfest and I said, thinking out loud, “Boy, y’know, if I’m Magneto, I don’t even bother with Wolverine. I just yank out his skeleton and be done with him.” And there was dead silence for a moment, and then everyone looked at me and said, “That’s a great idea.”
And I said, “No, it’s not.”
And they said, “Yeah! It’ll be a great visual!”
I said, “Well, sure, but then he’s dead. He can’t survive having his entire skeleton ripped out.”
“He has a healing factor!”
“Healing factor?! If you rip out his whole skeleton, he’s a pile of flesh on the floor! He’ll be a healed pile of flesh! What’ll he do? Ooze at people?!”
See, my vision of it was that Magneto ripped out the entire skeleton, not just excises the adamantium that was laced into it. Figures that my biggest contribution to X-continuity was simply voicing a passing thought.

I don’t know about you, but I’ve already committed this whole story to memory and added it to my mental database, filed under: “reasons I don’t get laid.”