Re: [RE: Spinosaur crests & sails]

["T. Mike Keesey" <tmk@dinosauricon.com>]

On 31 May 2001, Berislav Krzic wrote:

> I have to second Tracy on this issue: the shape of the type lower jaw of  _S.
> aegyptacus_
> indicates a shorter and taller skull than in _S. maroccanus_ . It seems the
> two species lived at the same time and competed (?) - must have been a lot of
> fish in the shallow waters at the time - consider the pterosaurs and the
> crocodiles as competitors, too.

I guess the sample size is too small to tell for sure, but can we rule out
sexual dimorphism?

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