Re: Yet even more questions (and I'm sure there'll be more...)

[Dinogeorge@aol.com]

In a message dated 6/23/02 1:20:27 AM EST, fam.jansma@worldonline.nl writes 
(quoting Jaime Headden):

<< "(...) well I think that it's time to
 re-evaluated the sistematic position of Heterodontosaurids as basal
 Ornithopods, infact, there're evidence for which Heterodontosaurids must be
 considered Marginocephalians..." >>

You might want to look at

Olshevsky, G. & Ford, T. L., 1994. "The Origin and Evolution of the 
Heterodontosaurians," Kyoryugaku Saizensen [Dino-Frontline] 8: 74â97 
[illustrations by T. L. Ford; in Japanese].

Most of the characters that Jaime lists are noted therein. The article 
explains why heterodontosaurians make reasonably good basal marginocephalians 
rather than ornithopods. This thesis goes back at least to Albert Santa 
Luca's description of Heterodontosaurus and was also picked up on by Zhao 
Xijin in his infamous 1983 Acta Pal Polonica paper with all those nomina nuda.