Re: Trike fights

[Dinogeorge@aol.com]

In a message dated 96-01-26 12:21:03 EST, Robert.J.Meyerson@uwrf.edu (Rob
Meyerson) writes:

>O.K, But how can that work for animals like T-tops, that don't have any
holes
>in
>that area.  The only way for the muscle to get to the upper frill is to go
>outside the head (as an aside, the noch between the jugal and the frill
could
>be
>where the jaw muscle went).
>
>Is it possible that _Psittacosaurus_ had a series of jaw muscles; one set
>that
>went through the head, and up to the frill; and a set that went outside the
>jaw?
>In the case of T-tops, it would only mean that the outer muscle took control
>of
>chewing.  OTOH, since T-tops evolved from short frilled ceratopians, it
could
>be
>that this is a characteristic of the group.

No, no. The muscles go from jaw to frill _inside_ the skull, under the
jugals, etc.