> I found this on the web, which may be of interest. Note that the
> subject is
> a *saurischian*, not *ornithischian* dinosaur. I quote all the
> substance of the web page:
> Coelophysis was a saurischian ("lizard-hipped") dinosaur, and
> atheropod. Its
> further classification is
> disputed, but it may be aceratosaurian. It is closely related to
> Rioarribasaurus (or may be the
> same genus).
> Coelophysis (collections of many fossils of one location).
I don't understand your point, Cliff. The topic of discussion was hollow
bones. You present a web site discussion of Coelophysis, which I can only
assume you think has relevance because it is a Saurichian, a "lizard-hipped
dinosaur". Therapods are saurichians, ceratosaurians are theropods,
Coelophysis is a ceratosaurian (even if sunk into Rioarribasaurus).
Maniraptorians are also theropods, birds are classified with other
maniraptors by dinosaur taxonomists.
What's your point?