Dinosaurs · Prosauropod

Mussaurus

Say it moos-SORE-us. The name means ‘mouse lizard’.

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

Length: 3 m
Diet: Plant-eater
When: Late Triassic221 to 210 million years ago
Fossils found in: Argentina
Named by: Bonaparte and Vince (1979)
Family tree: Dinosauria › Saurischia › Sauropodomorpha › Prosauropoda › Plateosauria › Plateosauridae

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

Prosauropods. Early long-necked plant-eaters, relatives of the sauropods. See all 16

Lived at the same time

Other prosauropods

Coloradisaurus Late Triassic
Guaibasaurus Late Triassic
Riojasaurus Late Triassic
Melanorosaurus Late Triassic
Thecodontosaurus Late Triassic
Plateosaurus Late Triassic
Massospondylus Early Jurassic
Jingshanosaurus Early Jurassic

Source: Mussaurus 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.