[no subject]

["Jonathon Crow" <jonathoncrow@hotmail.com>]

Hi,

I have being doing some thinking about the idea that canines in 
heterodontosaurs are a sexually dimorphic feature. This assertion seems to 
be based on the fact that in the genera Lycorhinus and Heterodontosaurus the 
canines are present, whereas in Abrictosaurus they are absent. The model for 
sexual dimorphism is based on observations of various groups of mammals 
(tayassuids, tragulids, cervids). I was wondering if anyone had any idea at 
what point in the life cycle of these mammals the sexually dimorphic canines 
are developed. Are they always substantially larger in males, even in 
juveniles, or do they develop just as the animal approaches sexual maturity?

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