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Re: Psittacosaurus queries

In a message dated 7/3/02 6:03:35 PM Pacific Daylight Time, dinoland@lycos.com writes:

>Moreover, in all the Psittacosaurus species the rostral bone
>contact the slender rostroventral processes of the nasal, a features absent
>in all the other Neoceratopsia, perhaps this is another diagnostic features
>of the genus.

It most certainly is.  

Tough to tell the polarity on this one, though, since all outgroups to {*Psittacosaurus* + Neoceratopsia} lack rostral bones altogether!

--Nick P.