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Re: JFC-Bloodiest Battle ??
Allosaurus, like Sinraptor and Monolophosaurus, has an exceedingly
narrow preorbital region. All three are like a pair of scissors and
quite unlike Tyrannosaurus with arched and fused nasals. I doubt
Allosaurus was capable of sustaining great stresses, especially
given the extensive pneumatic system enclosed in the narrow skull.
Given the abundance of Morrison sauropods, Allosaurus might have
been primarily a scavenger, rather than a predator, although that is
pretty much am waving. Jurassic Scavenger Club anyone?
An open skull construction need not mean that the maximum loads are
low - depending on the particular strain distribution, a kinetic skull
can often take fairly substantial loads without failure. A more
heavily built skull may indeed be stronger still, but I would be
hesitant to assume that a more open, mobile skull morphology entails
carrion feeding. Varanids, for example, have a very open skull
construction, with a high degree of cranial kinesis, and yet are
active predators of a range of prey items.
Michael Habib, M.S.
Center for Functional Anatomy and Evolution
Johns Hopkins School of Medicine
1830 E. Monument Street
Baltimore, MD 21205