RE: Stormbergia dangershoeki, new Early Jurassic ornithischian from South Africa

[Michael Mortimer <mickey_mortimer111@msn.com>]

Jay wrote-

>  Was Genasauria an apomorphy based taxon (all ornithischians possessing a 
> cheeck) or a defined as
> (Thyreophora + Cerapoda)?  If it was the first definition, doesn't that 
> disolve Genasauria?.

(Thyreophora + Cerapoda) (Currie and Padian, 1997)
(Ankylosaurus + Triceratops) (Sereno, 1998)

> I also noticed in the Butler's cladogram, Sceildosaurus is nested with 
> Ankylosauria, supporting
> Carpenter's Ankylosauromorpha.

Yes, though Butler writes, "The interrelationships of the basal Thyreophora 
were not considered in detail, as they are not of primary concern here, but 
will be considered elsewhere."

Mickey Mortimer