On 7/15/05, Roberto Takata <rmtakata@gmail.com> wrote: > Well, by dinosaurs, I guess that we must read *theropods*. Or do > sauropods and ornithischian have the same hollow bones? Sauropods (and other sauropodomorphs) have pneumaticized bones--it is a saurischian or eusaurischian trait. --Mike Keesey