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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.