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Re: More tyrant Q & A's



From: Stanley Friesen <sarima@ix.netcom.com>
Date: 10. december 1998 7:52
Subject: Re: More tyrant Q & A's


>Yes, but *by* *definition* subspecies *cannot* be sympatric.  (Though the
>boundary between subspecies can change with time, quite quickly even).
>Morphic variation within a single population is just that, variation, it
>has no taxonomic status.  And sympatric forms that do not interbreed are,
>by definition, distinct species, no matter how similar they are.  Thus
>forms in different levels may be subspecies, or forms in different
>geographic areas may be so, but forms side by side in the same quarry
>cannot be.
>

... and paleontologists sometimes have hard times in distinguishing even
species from genera (say T. rex, Tarbosaurus bataar case); different gender,
different growth stage, let alone subspecies - which quite often has quite
distinctive appearance.


Berislav Krzic
illustrissimus@usa.net
ILLUSTRISSIMUS PRODUCTION
http://illustrissimus.virtualave.net/
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