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Re: Kinetic skulls

Henri Rönkkö wrote-
I'd like to know the first theropod showing skull kinesis homologous to that found in birds.
Not really much of an answer to your question, but the basal pygostylian Confuciusornis lacks a kinetic skull, perhaps suggesting any development in non-avian theropods (like mononykines) was in parallel to ornithothoracine birds.
Mickey Mortimer