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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.
Are there any interesting patterns in the numbers (or form) of such
teeth in various taxa? In other words, does this character hold
phylogenetically valuable information (even though it would indeterminate in
----- Cheers, Ken
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