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Re: Avaceratops and Ceratops (was Re: THE NEW ISH OF JVP)


George Olshevsky wrote:

You can't remove Ceratops from the family Ceratop[s]idae; the family must
follow its type genus wherever it goes. One feasible alternative is to
isolate Ceratops in its own subfamily Ceratopinae, different from either
Centrosaurinae or Chasmosaurinae. Maybe Avaceratops could fit into that
subfamily.

And maybe _Triceratops_ too, another solid-frilled ceratopsid. It's looking more and more possible that _Triceratops_' absence of parietal fenestrae may not be due to secondarily loss after all. _Triceratops_ doesn't look too comfortable among the chasmosaurines, and the _Avaceratops_ analysis suggests that certain chasmosaurine characters may be primitive for the Centrosaurinae+Chasmosaurinae clade.


Tim

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