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Re: D-sectioned teeth



>     I don't really know much about this character (D-sectioned teeth in
the
> premaxilla), except that it is mainly (exclusively??) found in
tyrannosaurs,
> ornithomimes, and troodonts.

Troodontids, too?
Some other taxa, like *Allosaurus*, also have D-sectioned pmx teeth, but
AFAIK these aren't as thick as in tyrannosaurs.