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At 11:11 PM 3/16/99 -0500, Philidor11@aol.com wrote:
>In a message dated 3/15/99 11:46:31 AM Eastern Standard Time,
>darren.naish@port.ac.uk writes:
><< ... However, these characters are also seen in 
> other theropods (notably tyrannosaurids) and that they are -probably- 
> associated with social behaviour makes them somewhat suspicious as 
> ostensibly shared characters.  >>
>Social behaviors?  As opposed to display?  Please elucidate.  Thanks.

I doubt he meant *opposed* to display, he probably includes display as a
social behavior.  The problem he alludes to is that display characters
often vary greatly, even between closely related species.  This makes them
poorly suited to establishing larger scale phylogenetic relationships.

May the peace of God be with you.         sarima@ix.netcom.com