Re: Bainoceratops & other basal neoceratopsians

[Dinogeorge@aol.com]

In a message dated 5/29/03 1:52:55 PM Pacific Daylight Time, 
qilongia@yahoo.com writes:

<< *Chaoyoungsaurus* lacks the "jugal thingie" which I assume is used to
 refer to an apicular lateral and ventral expansion of the lateral jugal. >>

Someone else said Chaoyangsaurus (it's easy to check spelling if you're in 
doubt; just go to my Dinosaur Genera List and click on C) had a "jugal 
thingie," 
which I believe is better known as a "jugal boss" (and I should have called 
it that originally in this thread). As with so many morphological minifeatures, 
we have no idea whether this is a true synapomorphy or some kind of 
homoplasy; we just plug it into our PAUP programs and let them chug away.