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Are any illustrations available which map the complete set of pneumatic fossa
particular theropod (or sauropod)? So far, I've only seen diagrams of isolated
pneumatic bones (as in _Encyclopedia of Dinosaurs_). A complete map would be
helpful in restoring the respiratory system. I have seen the hypothetical
air sac system sketch in _The Complete Dinosaur_ (page 468), but I do not know
closely it follows the fossil evidence.
It is interesting that Dr. Robert Bakker states in _The Dinosaur Heresies_ that
absence of pneumaticity in ornithischians does not preclude the presence of air
sacs in the living animals; he suggests that their air sacs may have simply been
buried within their (unpreserved) soft tissue, as in some extant birds.
-- Ralph W. Miller III email@example.com