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Re: Serration variation

In a message dated 2/9/00 4:49:55 PM Pacific Standard Time, 
Dinogeorge@aol.com writes:

> Neither behavior nor tooth shape has been shown to be independent of 
>  phylogeny. So who knows what "more" means in this context. Also, I don't 
> know 
>  of any theropod group in which >lost< tooth serrations were >regained<. 
>  there were surely theropods that evolved serrated teeth independently of 
>  another, from smaller (birdlike) theropods that had tiny, unserrated 
>  teeth--the same kind as seen in Archaeopteryx.

Actually, since serrated teeth are widespread within basal archosauria, these 
could be said to have regained the serrations on their teeth, if you wanted 
to say that.

--Nick P.