Southern Keel-Jaw

Tropeognathus mesembrinus

(Wellnhofer, 1987)

    The distinctive crest on the front of Tropeognathusmesembrinus's snout is similar in function to the crest of Anhaguera santanae, but constructed for fishing in a different position.  While A. santanae's crest shape forces it to bend its head over and catch fish with its bottom jaw, Tropeognathus's more rounded crest allows it to fish with its head pointing forward (Wellnhofer 127-128).
 

Thanks to Ray Stanford, or course
Other sites containing pertinent information:

• T. Mike Keesey's Tropeognathus page.  (some information, with my picture)
• Brian Franczak's head sketch of Tropeognathus (at the bottom of the page)
• John Conway's Tropeognathus drawing
• Tropeognathus from the BBC's Walking with Dinosaurs
•  Kazunari Araki's Tropeognathus sculpture
• The Illustrated Encyclopedia of Pterosaurs, by Dr. Peter Wellnhofer, published in 1991 by Salamander Bookd Limited.