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Fuel for another debate

Dear Dino Fans,

Howdy again!  This morning some friends and I were reading the messages and
talking about dinosaurs in general when one of them asked why T-rex's arms
were so small.  It didn't make much sense to
us to reduce ones arms but there must have been some evolutionary advantage to
it...right?  If there is a theory on this we would appreciate someone
explaining it to us.  Thank you in advance.

Stewart Alcorn     sa43@umail.umd.edu