Half Fossilized T-Rex

Earthfiles.com: "Thirty-one dinosaur skeletons have been found at the Hell Creek Formation in the past four years by Montana State University paleontologist, Jack Horner. And one of those is the first dinosaur remains to have stretchy tissue and even what appears to be blood cells inside one of its leg bones. "

This certainly is weird. You have a fossil, you remove the rock and what you have left is, appearently, biological material. Of course, the scientists want to dot their i's and cross their t's before they get definative on that, but it is a level of detail we are not used to thinking is available in a fossil, at any rate.