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Re: Ornithpods marrow bone

Did someone know if the marrow bone can be
take as a characteristic of the Ornithopod dinosaurs?

It certainly can't be. Your bones have marrow, too, for example.

As the pneumaticity in the theropods?

Most bones of most theropods are not pneumatic, but contained marrow...

I need bibliography on this

Perhaps a textbook on medicine would help?