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Re: Richardostesia teeth
Are there any other animals that have both serrated and unserrated teeth
within a species?
Yes. Among theropods- coelophysids, juvenile tyrannosaurids, most basal
coelurosaurs, Microraptor and Graciliraptor.
That is to say, they have unserrated teeth at the tips of the jaws and
serrated ones elsewhere.
*Sinornithosaurus* has a few unserrated ones, IIRC, near the tips, but not