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Re: Fastovsky vs Archibald


--- Tim Donovan <uwrk2@yahoo.com> wrote:

>I think one can still
> make
> a case for gradual extinction in that lambeosaurs
> appear greatly diminished in numbers

  I meant numbers of genera or species as well as
absolute numbers. Even in the early Maastrichtian H.
altispinus is the only one known in North America.



                
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