Gnathosaurus question

[david peters <davidrpeters@earthlink.net>]

Gnathosaurus is well known for having a spoon-shaped rostrum. But the dentary 
assigned to this genus does not appear to be spoon-shaped (see Wellnhofer 
1991). Am I missing something here? 

This becomes important to Dr. Unwin's hypothesis linking Cearadactylus atrox to 
Gnathosaurus cladistically, because he notes that Cearadactylus has a 
spoon-shaped dentary, much wider than its not-so-spoon-shaped rostrum. 

Homolog or not?

David Peters
St. Louis