Comments

Medial views of the coronoid process of four iguanodontoidean taxa. A, Iguanodon sp. (NHM R754).]B, Brachylophosaurus canadensis (CMN 8893); the white rectangle indicates the apomorphic caudodorsally pointed margin. B, Prosaurolophus maximus (MOR 553S-7-12-8-5). C, Edmontosaurus annectens (BMNH R3656). D, Lambeosaurine from Dinosaur Provincial Park (?Lambeosaurus, UALVP 11734).

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