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Re: Rigid dinosaurs?

Mike Habib wrote:

> There is also the problem (already alluded to) of equating rigidity in
> the body and neck to poor mobility.

Yeah--birds and turtles are both among the most rigid of tetrapods,
but man is there a big difference between the agility of a bird and
the agility of a turtle!
Mike Keesey
The Dinosauricon: http://dino.lm.com
Parry & Carney: http://parryandcarney.com