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

Isn't there a deer that only the male has canines?
Why would this asbolve dinosaurs from a convergent thing?

-Betty Cunningham

> <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).>