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hadrosaurids/Coelophysis



Up until a couple of years ago at least, hadrosauridae was a single family.
Recently I've seen a couple of phylogenies where Hadrosauridae and
Lambeosauridae were used. What is the concensus (if any) on whether
hadrosaurids and lambeosaurids are tribes or families, and on what basis?
Second question: Has the ICNZ made a decision yet on the Coelophysis /
Rioarribasaurus arguement?
Thanks for your replies,
Graeme Worth