Dinosaurs · Small ornithopod

Oryctodromeus

Say it or-ik-tow-drohm-ee-us. The name means ‘digging runner’.

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

Length: 2.1 m
Diet: Plant-eater
When: Late Cretaceous99 to 94 million years ago
Fossils found in: USA
Named by: Varricchio, Marin and Katsura (2007)
Family tree: Dinosauria › Ornithischia

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

Small ornithopods. Small, fast, two-legged plant-eaters. See all 12

Lived at the same time

Eolambia · same country
Protohadros · same country
Sauropelta · same country
Nothronychus · same country
Zuniceratops · same country
Achillobator
Buitreraptor
Carcharodontosaurus

Other small ornithopods

Gasparinisaura Late Cretaceous
Leaellynasaura Early Cretaceous
Zephyrosaurus Early Cretaceous
Atlascopcosaurus Early Cretaceous
Parksosaurus Late Cretaceous
Thescelosaurus Late Cretaceous
Orodromeus Late Cretaceous
Zalmoxes Late Cretaceous

Source: Oryctodromeus 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.