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Re: attack on dinosaur--horrific video



On 11/24/07, David Marjanovic <david.marjanovic@gmx.at> wrote:
> > OK...but the ways in which they were different may have had far reaching
> > consequences.  The big one, in my view, was that the dinosaurs had to
> > become
> > sedentary one or more times a year.  If they were unable to outdistance
> > other dinosaurs, then they would have to defend their nests.  This by
> > itself
> > provided a selective advantage for even larger size, and all the
> > ecological
> > effects that came with it.
>
> Then we should see a driven trend to larger size throughout the Mesozoic,
> shouldn't we?

Shouldn't we also see a driven trend to larger size in Cenozoic
oviparous amniotes?

I'm not seeing why egg-predation by placentalians would affect
mesozoic dinosaurs differently from other egg-laying amniotes.

-- 
Andreas Johansson

Why can't you be a non-conformist just like everybody else?