Dinosaurs · Large theropod

Saurophaganax

Say it sore-oh-fag-ah-naks. The name means ‘king of the lizard eaters’.

Saurophaganax 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
12 m
Diet
Meat-eater
When
Late Jurassic154 to 142 million years ago
Fossils found in
USA
Named by
Chure (1996)
Family tree
Dinosauria › Saurischia › Theropoda › Allosauridae
TriassicJurassicCretaceousSaurophaganax252 Ma66 Ma
Where Saurophaganax 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

Other large theropods

Source: Saurophaganax 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.