Dinosaurs · Large theropod

Monolophosaurus

Say it mono-Loh-foh-sore-us. The name means ‘single-crested lizard’.

Monolophosaurus 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: 5.7 m
Diet: Meat-eater
When: Mid Jurassic180 to 159 million years ago
Fossils found in: China
Named by: Zhao and Currie (1993)
Family tree: Dinosauria › Saurischia › Theropoda › Neotheropoda › Tetanurae › Avetheropoda › Carnosauria

Where Monolophosaurus 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

Bellusaurus · same country
Yuanmousaurus · same country
Agilisaurus · same country
Gasosaurus · same country
Huayangosaurus · same country
Omeisaurus · same country
Shunosaurus · same country
Sinraptor · same country

Other large theropods

Dilophosaurus Early Jurassic
Cryolophosaurus Early Jurassic
Dubreuillosaurus Late Jurassic
Poekilopleuron Mid Jurassic
Sinraptor Mid Jurassic
Megalosaurus Mid Jurassic
Eustreptospondylus Mid Jurassic
Torvosaurus Late Jurassic

Source: Monolophosaurus 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.