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Re: A critique of Sullivan's pachycephalosaur paper,

On 6/20/06, Michael Mortimer <mickey_mortimer111@msn.com> wrote:

Sullivan's diagnosis for Pachycephalosauridae reads like one of those
classic 'diagnoses' from the 1950's that lists symplesiomorphic or variable
characters in addition to synapomorphies.  "Ornithischian dinosaurs with
thickened, fully-flat
or incipiently to fully-domed frontoparietals."  So... the thickening is all
that needs to be mentioned then.  "Supratemporal fenestrae absent to
well-developed."  Uh... this would exclude which states now?

It would seem to exclude exaggeratedly enlarged supratemporal fenestrae.

Andreas Johansson

Why can't you be a non-conformist just like everybody else?