Etsy.com is one of my favorite places to look for skull stuff.
One of my favorite skull-makers is Skull House who makes awesome stuff like that up there.
"These slip cast porcelain skulls are all made in small one of a kind batches. Each is hand carved, textured, or glazed. Then fired to around 2300 degrees."
Now I'm no potter and I'm not sure what "slip cast" means, but I can only assume it means "Awesome!"
I've yet to score one of his beautiful skulls and I'm not sure why, though I have purchased other items from himat http://www.etsy.com/shop/cyrusthepotter
Go check him out. And etsy.com in general. A simple search for "skull" will net you all sorts of wicked results.