Lower Cretaceous Period
Tropeognathus
mesembrinus
Complete skull and partial skeleton of a large pterosaur from the Aptian,
Santana Formation, Brazil.
Wellnhofer P; 1987, New Crested Pterosaurs from the Lower Cretaceous of
Brasil, Mitteilungen der Bayerischen Statssammlung fur Paleontologie und
historische Geologie, 27: 175-186 Munchen
