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Temporal range: Late Triassic – Early Jurassic
Dilophosaurus wetherilli
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Order: Saurischia
Suborder: Theropoda
Family: Dilophosauridae
Madsen & Welles, 2000

The Dilophosauridae ("double-ridged lizards") is a family of carnivorous theropod dinosaurs, possibly belonging to the Ceratosauria. The only five members are Dilophosaurus (North America, Asia), Dracovenator (Africa), Sinosaurus (Asia), Cryolophosaurus (Antarctica) and possibly Monolophosaurus (Asia) which all lived from the Late Triassic to the Mid Jurassic. All five of them also have crests. Zupaysaurus possibly also belongs to this group.