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Re: Greg Paul's new (or newly named) iguanodonts

While I agree with much of what you said, in actual fact the avicephalan
types were only considered thecodonts by the "anti-dinosaurian origin of
birds" folks.

Yes. One reason is that many others were (correctly) skeptical about the presence of an antorbital fenestra in *Megalancosaurus* and *Longisquama*. Another is that they saw that these animals have no other archosaur features... diagnoses have always been malleable...