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RE: Pterosaur diversity (was: Re: Waimanu)
Tim Williams wrote-
_Ceratops_ (the nominative genus for Ceratopsidae) is probably an invalid
genus (nomen dubium). Sereno (2005) is confident that _Ceratops montanus_
belongs to the Chasmosaurinae, based on the size of the horn cores. In
fact, he is so confident that he renames this subfamily the Ceratopsinae.
Let's hope that big brow horns are limited to chasmosaurines/ceratopsines
Zuniceratops and Ryan's (still undescribed?) basal centrosaurine show this
isn't so. Large brow horns are plesiomorphic for ceratopsomorphs.