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Orodromeus

Restoration of Spinosaurus, a large sail-backed predatory dinosaur
Photo: Brondon Bobah, CC BY 4.0, via Wikimedia Commons
Pronunciation
OR-uh-DROH-mee-us
Name means
Egg (mountain) Running Race
Diet
Herbivore
Posture
Bipedal
Period
Late Cretaceous
Length
8 feet (2.5 meters)

Order: Ornithischia · Suborder: Ornithopoda · Family: Hypsilophodontidae

Orodromeus eggs, embryos, and babies were discovered in Montana. These rare finds provide insight into the way in which dinosaurs laid their eggs and cared for them, as well as how the embryos developed and were nutured after they hatched. Like Maiasaura young, Orodromeus hatchlings were cared for by their parents until they were old enough to fend for themselves.

Restoration of armoured Ankylosaurus with bony plates and a club tail
Photo: PaleoNeolitic, CC BY-SA 4.0, via Wikimedia Commons

More Cretaceous-period dinosaurs →

Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.

Frequently asked questions

What does Orodromeus mean?

The name Orodromeus means “Egg (mountain) Running Race”. It is pronounced OR-uh-DROH-mee-us.

When did Orodromeus live?

Orodromeus lived during the Late Cretaceous.

Was Orodromeus a carnivore or a herbivore?

Orodromeus was a herbivore.

How big was Orodromeus?

Orodromeus was about 8 feet (2.5 meters) long.

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Other dinosaurs from the Hypsilophodontidae family.

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