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Re: Natural enemies

From: dwlewis <dwlewis@rmii.com>
To: dinosaur@usc.edu
Subject: Natural enemies
Date: Saturday, June 27, 1998 9:29 PM

    Were there any two (or more) species of dinosaurs that were natural
enemies? If so, what are they?

Thanks in advance,

Caleb , 
Without any doubt , Velociraptor mongoliensis and Protoceratops andrewsi
were natural enemies , as proved by the " fighting dinosaurs" fossil found
in Mongolia . We could speculate on any number of natural enemy scenarios ,
(T.rex/Triceratops , Allosaurus/Stegosaurus ,
Compsognathus/Archaeopteryx,T.rex/T.rex, etc.), but we have hard , tangible
evidence for just the Velociraptor and Protoceratops , AFAIK . Lots of
dinosaur remains of two or more specie have been found in close association
with one another , giving the impression that one preyed upon the
other,(Deinonychus/Tenontosaurus , Allosaurus/Apatosaurus ) .
Unfortunately , after a closer look , the remains are open to several
different interpretations, ( the animals were washed together in a flood ,
scavenger activity , etc. ) . The two examples given only proves that
Deinonychus fed on Tenontosaurus , Allosaurus fed on Apatosaurus , not that
the predators killed their prey , (although there is a high probability
that these predators did in fact kill their
prey , under the right circumstances ) . So , untill we find a T.rex with a
Triceratops horn puncturing it's snout , we're just speculating . 
Hope this helps !

Regards , Truett Garner