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Re: ABELISAURIDS & CARCHARODONTOSAURIDS
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,
><< ... 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.
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