Tropeognathus

Tropeognathus; Temporal range: Early Cretaceous (Albian), 112 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Reconstructed skeleton, National Museum of Brazil
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Order:	†Pterosauria
Suborder:	†Pterodactyloidea
Family:	†Anhangueridae
Subfamily:	†Tropeognathinae
Genus:	†Tropeognathus; Wellnhofer, 1987
Type species
	†Tropeognathus mesembrinus; Wellnhofer, 1987
Synonyms
	Anhanguera mesembrinus ; (Wellnhofer, 1987); Coloborhynchus mesembrinus ; (Wellnhofer, 1987); Criorhynchus mesembrinus ; (Wellnhofer, 1987); Ornithocheirus mesembrinus ; (Wellnhofer, 1987);

Tropeognathus (meaning "keel jaw") is a genus of large pterosaurs from the late Early Cretaceous of South America. This genus is considered to be a member of the family Anhangueridae, however, several studies have also recovered it within another family called Ornithocheiridae. Both of these families are diverse groups of pterosaurs known for their keel-tipped snouts and large size. Tropeognathus is regarded as the largest pterosaur found in the Southern Hemisphere, only rivaled by the huge azhdarchids.^[1] The type and only species is Tropeognathus mesembrinus. Fossil remains of Tropeognathus have been recovered from the Romualdo Formation, which is a Lagerstätte located in the Santana Group of the Araripe Basin in northeastern Brazil.^[2]

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