Dinosaurs · Large theropod

Dilophosaurus

Say it die-LOAF-oh-sore-us. The name means ‘two-crested lizard’.

Dilophosaurus beside a person 1.75 m tall. Ticks mark every metre.Body shape drawn for this site, showing the general build of large theropods

Length: 7 m
Weight: 400 kg
Diet: Meat-eatersmaller animals and fish, possibly other dinosaurs
Walked: On 2 legs
When: Early Jurassicabout 184 million years ago
Fossils found in: USA
Family tree: Dinosauria › Saurischia › Theropoda › Neotheropoda

Where Dilophosaurus sits in the age of dinosaurs.Periods from the ICS chart; dinosaur dates from the Natural History Museum

Large theropods. Big two-legged meat-eaters, such as Tyrannosaurus. See all 63

Lived at the same time

Ammosaurus · same country
Podokesaurus · same country
Segisaurus · same country
Barapasaurus
Emausaurus
Kotasaurus

Other large theropods

Monolophosaurus Mid Jurassic
Cryolophosaurus Early Jurassic
Dubreuillosaurus Late Jurassic
Poekilopleuron Mid Jurassic
Sinraptor Mid Jurassic
Megalosaurus Mid Jurassic
Eustreptospondylus Mid Jurassic
Lophostropheus Early Jurassic

Source: Dilophosaurus in the Natural History Museum Dino Directory, read 12 November 2026. Sizes are the museum's estimates for a typical adult. "Lived at the same time" lists dinosaurs whose dates overlap, which does not always mean they met.