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RE: Bipedal apatosaurs and stegosaurs?
Rob Meyerson wrote:
> Even among the diplodicids, I have a hard time seeing a herd of the big ones
> all rearing up to feed on the tops of the pines. The loss of efficiency
I am unsure of how great the loss of efficiency would be.
I think if they ingested large quantyities of foliage each time they
reared up the loss would be *relatively* small.
> this kind of posture would make these animals more susceptable (sp?)
> to predation. Imagine a Diplodicus reared up, with it's head in the
> stratosphere. Along comes a hungry Allosaurus. Even if the Diplo saw the
> theropod coming, it would take a lot of precious time for the animal to get
> all feet on the ground and to engage it's tail for combat.
Why bother - just bring the front feet down on top of the nasty little
allosaur! Really, given the large size disparity, the front feet of
a rearing diplodocid would be higher than the back of any known allosaur.
In fact, this may well have been a more effective defense mode for
a thin-tailed Diplodocus than using its tail anyway.
The peace of God be with you.