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Fwd: Re: Crest or Horn? was RE: Ornitholestes
--- goose zilla <goosezilla@yahoo.com> wrote:
> Date: Mon, 17 Dec 2001 22:54:43 -0800 (PST)
> From: goose zilla <goosezilla@yahoo.com>
> Subject: Re: Crest or Horn? was RE: Ornitholestes
> To: tmk@dinosauricon.com
>
> Id say if its durable enough for an animal to hit
> other animals with it and bear the load of multiple
> collisions.
> Crests I wouldnt assume to be used for trauma of any
> kind. While horns, antlers, etc. are definately
> designed to butt and puncture against things.
> So if the structure is delicate it is a crest of
> sorts
> and if quite durable it is a horns of sorts. For
> instance, a horn shaped crest would still be a crest
> if it was brittle in structure.
>
>
> --- "T. Mike Keesey" <tmk@dinosauricon.com> wrote:
> > This question brings up another one: when is
> > something a crest and when is
> > it a horn? Do _Ceratosaurus_, _Allosaurus_,
> > _Proceratosaurus_, and
> > _Carnotaurinae_ have horns or do they have crests?
> > What are the criteria?
> >
> >
>
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