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Re: Tarbosaurus?




On Fri, 21 Jul 2000 Dinogeorge@aol.com wrote:

> In a message dated 7/21/00 3:54:32 AM EST, Adam.Yates@bristol.ac.uk writes:
> 
> << This view seems overly simplistic to me as it doesn't take into account
>  population dynamics and taphonomic biases. >>
> 
> Since we know nothing about tyrannosaurid population dynamics, the simplistic 
> view is the only one we can start from. We have no idea how many hatchlings 
> grew to adulthood, for example, because we have no tyrannosaurid nests; nor 
> do we have any specific idea what kinds of taphonomic and preservational 
> biases may have been operating. Heck, we don't even know whether there was 
> more than one species of large tyrannosaurid in the North American 
> Maastrichtian.

I agree we don't know these things. But that is precisely my point,
without knowing these things you can't use the size distribution of the
preserved remains as positive taxonomic evidence.

cheers

Adam Yates 
>