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Re: Dilophosaurus Forelimb Bone Maladies

On Fri, Feb 26th, 2016 at 12:44 PM, Tim Williams <tijawi@gmail.com> wrote:

> The authors propose that during the long healing period, the use of
> the forelimbs by this smashed-up _Dilophosaurus_  was severely
> compromised.  But it wasn't fatal.  This supports the interpretation
> that theropod forelimbs were not all that useful for predation - even
> when the forelimbs were healthy and undamaged.  Although often quite
> strong and/or robust, theropod forelimbs had limited reach and the
> manus often had fairly mediocre grasping abilities (especially for
> small theropods that were supposedly arboreal).  So it's no surprise
> (to me) that so many theropods reduced their forelimbs (carnotaurines
> effectively lost them altogether), or turned them to other purposes,
> such as display or locomotion (with display perhaps leading into
> aerial locomotion in a couple of lineages).

The forelimbs of Dilophosaurus would seem to have been better suited for use in 
predation than their fragile-looking skulls and head crests.


Dann Pigdon
Spatial Data Analyst               Australian Dinosaurs
Melbourne, Australia