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R: Sexual Dimorphism (was T.rex Q & A)



-----Messaggio originale-----
Da: Berislav Krzic <veselinka.stanisavac@siol.net>
A: Stanley Friesen <sarima@ix.netcom.com>
Cc: dinosaur@usc.edu <dinosaur@usc.edu>
Data: giovedì 10 dicembre 1998 11.19
Oggetto: Re: Sexual Dimorphism (was T.rex Q & A)


>What about Psittacosaurus? Heterodontosaurus? Pachyrhinosaurus? Oviraptor?


I don't known if there are some sexual dimorphism in Psittacosaurus, but if
I remember correctly the sexual dimorphism proposed for Heterodontosaurus is
based on the presence in some skulls of caniniform teeth, that actually not
represent true sexual dimorphism but two distinct genera Heterodontosaurus
(presence of caniniform teeth) and Abrictosaurus (absence of caniniform
teeth).

By and sorry for the English
Alessandro Marisa
Via A. Grandi n°18 ROVERETO (TN) ITALY
Tel: 039-0464-434658 Email: amaris@tin.it