Roxochampsa

Roxochampsa is an extinct genus of itasuchid notosuchian from the Late Cretaceous of Brazil. Fossil remains have been found in the sediments of the Adamantina and Presidente Prudente Formations and were originally described as a species of Goniopholis. Roxochampsa had narrow and elongated jaws that indicate a mesorostrine and flattened skull shape. The teeth were interlocking as in modern crocodiles and bear carinae with crenulations, making it pseudo-ziphodont. Among the most distinguishing features of Roxochampsa is the fact that the teeth furthermore bear prominent crenulated ridges that form secondary cutting edges in addition to the main carinae. It is interpreted as a semi-aquatic generalist predator, feeding both on small terrestrial vertebrates, fish, carrion and hard-shelled prey it was able to crack with its blunter posterior teeth. The genus is monotypic, the type species is R. paulistanus.