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Re: Platecarpus tympaniticus - how to analyze a nomen dubium

On Tue, Sep 21, 2010 at 10:24 PM, Tim Williams <tijawi@yahoo.com> wrote:
> PhyloCode (which has yet to be implemented) states that if a clade name is 
> based on a genus name, that genus must be used as an internal specifier. ÂSo 
> again, not only must Ceratopsidae (and Ceratopsinae) include _Ceratops_, but 
> _Ceratops_ must be included in the definition(s).

Minor correction: the type *species* of that genus must be used as a
specifier. Or the type specimen of the type species. So any name based
on "Ceratops" (not just the ICZN names--"Ceratopsoidea",
"Ceratopsidae", "Ceratopsinae", "Ceratopsini", "Ceratopsina"--but
others like "Ceratopsia" and "Ceratopsomorpha") must include either
Ceratops montanus Marsh 1888 or USNM 2411 as an internal specifier.

T. Michael Keesey
Technical Consultant and Developer, Internet Technologies
Glendale, California