Cearadactylus atrox formerly: SMNK PAL 3828 and CB-PV-F-O93, now: UFRJ MN 7019-V (Leonardi and Borgomanero 1985) Cenomanian, Early Cretaceous, ~90 mya, ~57 cm skull length is known from a skull with an unusual history. Originally it was put together with the premaxilla and anterior dentary switched. Derived from a sister to Brasileodactylus and Ludodactylus, Cearadactylus phylogenetically preceded Liaoningopterus and Anhanguera.

Distinct from Brasileodactylus, the skull of Cearadactylus had a wide spoonbill or rosette tip from which erupted giant teeth. The maxillary teeth were tiny. The mandible was deeper, but flatter anteriorly.

Dalla Vecchia FM 1993. Cearadactylus? ligabuei, nov. sp., a new Early Cretaceous (Aptian) pterosaur from Chapada do Araripe (Northeastern Brazil)", Bolletini della Societa Paleontologica Italiano, 32: 401-409.

Leonardi G and Borgomanero G 1985. Cearadactylus atrox nov. gen., nov. sp.: novo Pterosauria (Pterodactyloidea) da Chapada do Araripe, Ceara, Brasil. Resumos dos communicaçoes VIII Congresso bras. de Paleontologia e Stratigrafia, 27: 75–80.

Vila Nova BC, Kellner AWA, Sayão JM 2010. Short Note on the Phylogenetic Position of Cearadactylus Atrox, and Comments Regarding Its Relationships to Other Pterosaurs. Acta Geoscientica Sinica 31 Supp.1: 73-75.

Unwin DM 2002. On the systematic relationships of Cearadactylus atrox, an enigmatic Early Cretaceous pterosaur from the Santana Formation of Brazil. Mitteilungen Museum für Naturkunde Berlin, Geowissenschaftlichen Reihe 5: 1239–263.

wiki/Cearadactylus