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Re: Lizard like bird-hips



In a message dated 96-02-03 18:20:11 EST, pharrinj@PLU.edu (Nicholas J.
Pharris) writes:

>The name just became entrenched in the scientific vocabulary.  Bakker, 
>for one, refers to use Predentata, a term coined by Marsh, as this 
>describes a feature no non-ornithischian has, i.e. a predentary bone.
>
>

Indeed, Predentata _is_ a better term, because the ornithischian pelvis also
occurs in segnosaurs, which were otherwise non-ornithischian phytodinosaurs,
the closest-known sister group to Ornithischia. The predentary bone is the
key ornithischian synapomorphy.