Edmontosaurus annectens and the Crest That Wasn't

I don't think the data confirms a medial "cocks'-comb was present in Edmontosaurus regalis, and parsimony suggests that the restored version I show may be just as likely, given its consistency with the data. The structure is associated with the side of the skull, and we should always be very careful about assuming that a preserved structure is intact when the specimen is mangled or otherwise not available in all dimensions. My alternate take, here of Edmontosaurus annectens, suggests the "crest" was just the front end above the head of a large mass of tissue that lay around and above the neck.