Re: cerebellum size

["Ken Kinman" <kinman@hotmail.com>]

Dear all,
    I was reading Chris Brochu's (2000) paper, "A digitally-rendered 
endocast for _Tyrannosaurus rex_" (JVP 20(1): 1-6).
    On page one he says "More basal theropods and nontheropod dinosaurs 
retained the plesiomorphic arrangement of a large cerebellum projecting 
dorsally over the roof of the forebrain."
    But I thought such an arrangement was also found in "derived" forms 
like birds, so I am scratching my head and trying figure out why this sounds 
so confusing to me.  I don't think Chris is back on the list yet, and just 
wondering if anyone else here knows much about cerebellum evolution.
     It seems like this should be important with respect to the evolution 
of flight and secondary flightlessness.
                        -----Ken
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