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> Just looking at the old cerapod phylogeny and shaking my head about the
> placement of heterodontosaurids. If you look at the jugal boss and
> caniniform teeth, don't you see basal pachycephalosaur?
_Orodromeus_ and _Zephyrosaurus_ also show a jugal boss. These are
definitely ornithopods - of the family Hypsilophodontidae (although
I believe this has been broken up into more than one clade by some
> Now if _Lanasaurus_
> is a valid taxon and it does lack the caniniform teeth,
It does? Maybe it's just a female, or a juvenile, and only males had
> The only reason I include ceratopsians in a group with
> "heterodontosaurids"/pachycephalosaurs exclusive of _Lanasaurus_ is because
> of the caniniform teeth in _Protoceratops_, which could be because of
I didn't know _Protoceratops_ had caniniform teeth.