The saga of Coelophysis

Reviews the history of the name Coelophysis, particularly the debate over whether to replace it with Rioarribasaurus.

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Coelophysis is a Late Triassic theropod dinosaur that is now the Official State Fossil of New Mexico by a 1981 act of the New Mexico State Legislature. The history of the name Coelophysis, and the fossils attributed to it, however, is far from straightforward.