Ceratosauria
Originally, Ceratosauria included the above dinosaurs plus the Upper Triassic to Lower Jurassic  Coelophysis and Dilophosaurus. This implied a much earlier divergence of ceratosaurs from other theropods. However, recent studies have shown that coelophysoids and dilophosaurids do not form a natural group with other ceratosaurs, and so they are excluded from this group.