Dinosaurs · Ceratopsian

Psittacosaurus

Say it SIT-ak-oh-sore-us. The name means ‘parrot lizard’.

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

Length: 2 m
Weight: 50 kg
Diet: Plant-eaterplant material
Walked: On 2 or 4 legs
When: Early Cretaceous120 to 100 million years ago
Fossils found in: China, Mongolia, Russia
Named by: Osborn (1923)
Family tree: Dinosauria › Ornithischia › Ceratopsia › Psittacosauridae

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

Ceratopsians. Horned and frilled plant-eaters, such as Triceratops. See all 29

Lived at the same time

Archaeoceratops · same country
Equijubus · same country
Gobisaurus · same country
Harpymimus · same country
Probactrosaurus · same country
Shamosaurus · same country
Microraptor · same country
Protarchaeopteryx · same country

Other ceratopsians

Archaeoceratops Early Cretaceous
Liaoceratops Early Cretaceous
Stenopelix Early Cretaceous
Aquilops Early Cretaceous
Graciliceratops Late Cretaceous
Zuniceratops Late Cretaceous
Chaoyangsaurus Late Jurassic
Microceratus Late Cretaceous

Source: Psittacosaurus 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.