It comprises the Pseudosuchia, the "false crocodiles", and the Ornithosuchia, which in turn comprises the dinosaurs and their relatives, the pterosaurs and the birds.
Comprende os Pseudosuchia (os "falsos crocodilos") e os Ornithosuchia, que á súa vez comprenden os dinosauros e os seus parentes, os pterosauros e as aves.