No, they're not used, because they didn't find DNA -- they found rocks. We're dealing with fossils here, not organic matter. Tissue does not last for millions of years.
Bakker notes that lots of what people call dinosaur fossils are in actuality just bone. Fossilization is rarely a complete or perfect process. So this may in fact be bone.
Wasn't a scientist able to extract DNA fragments from dinosaur bones by leaving them in an acidic solution?