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Re: Venomous archosaurs

I do recall the Mogolian lizard Estesia being considered poisonous because of the hollow "channels" in its teeth where venom would have flowed, and the doubtfulness of Dilophosaurus being such because it lacked this feature as well as room for poison sacs.
-M. Nalasco

From: bh162@scn.org (Phillip Bigelow)
Reply-To: bh162@scn.org
To: dinosaur@usc.edu
Subject: Re: Venomous archosaurs
Date: Thu, 9 Mar 2000 23:59:13 -0800 (PST)

The reference is:

Sues, H.-D. 1996. A reptilian tooth with apparent
venom canals from the Chinle Group (Upper Triassic)
of Arizona. Journal of Vertebrate Paleontology 16(3):571-572.

Relevant quote:
"As _Uatchitodon_ is currently known only from isolated
teeth, its phylogenetic relationships remain
unresolved.  Close similarities to the teeth of many
carnivorous archosauromorph reptiles possibly indicate
affinities to that group."


Also mentioned in the note was the venom delievery system
of the teeth of the Late Permian therocephalian therapsid
_Euchambersia mirabilis_ (Mendrez, 1975), and in some
venomous Late Cretaceous varanoid lizards.  Another
possible _?Uatchitodon_ tooth is also described.


               <pb>


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