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Re: Ankylosaurian systematics



In a message dated 4/25/00 3:30:50 PM Pacific Daylight Time, 
tmk@dinosauricon.com writes:

> In some classifications this is
>  named Polacanthidae, in others Polacanthinae (inside Ankylosauridae,
>  sister group to Shamosaurinae + Ankylosaurinae). The phylogeny in either
>  scheme is the same.

I was under the impression that in at least some phylogenies, _Shamosaurus_ 
falls outside Polacanthinae + Ankylosaurinae.

Nick P.