Relationship of Aves Within Theropoda Oviraptoridae | | Dromaeosauridae | \ Tyrannosauridae | \ \ | \ Aves \ | \ / Titanosauridae \ | \/ \ \ | / \ \ | \/ \ Cetiosauridae \ | /\ \ / \ | / Maniraptora o "Compsognathus" \ | / SAUROPODA \ \ \ | / \ \ \ | / \ \ \ | / \ \ \ | / \ Ceratosauria \ \|/ \ \ \ o \ \ \ / Maniraptiformes \ \/ \ / \ /\ \ / \ \ \/ \ \ / \ \ / \ \ / \ \ \/ \ \ /\ \ \ / Coelurosauria \ o \ / Neotheropoda \ \/ \/\ SAURISCHIA | / THEROPODA ---------------------------------/ | Simplified Cladogram, after illustration in _Encyclopedia of Dinosaurs_, P.J. Currie and K. Padian, Editors, 1997, Academic Press