Dinosaurs · Small ornithischian

Enigmacursor

Say it ee-NIG-ma-kur-sor. The name means ‘Puzzling or mysterious runner’.

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

Length: 1.8 m
Diet: Plant-eater
When: Late Jurassic152 to 145 million years ago
Fossils found in: USA
Named by: Maidment and Barrett (2025)
Family tree: Dinosauria › Ornithischia › Neornithischia

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

Small ornithischians. Small early bird-hipped plant-eaters. See all 7

Lived at the same time

Allosaurus · same country
Apatosaurus · same country
Barosaurus · same country
Brachiosaurus · same country
Camptosaurus · same country
Ceratosaurus · same country
Coelurus · same country
Diplodocus · same country

Other small ornithischians

Othnielia Late Jurassic
Agilisaurus Late Jurassic
Hypsilophodon Early Cretaceous
Heterodontosaurus Early Jurassic
Lycorhinus Late Triassic
Lesothosaurus Early Jurassic

Source: Enigmacursor 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.