Outline: a typical ornithopod
Leaellynasaura
lee-EL-in-uh-SORE-uh
"Leaellyn's lizard"
- Lived
- 113 to 110 million years ago, Early Cretaceous
- Diet
- Herbivore
- Length
- about 2 m (7 ft)
- Group
- Ornithopods
- Found in
- Australia
- Named by
- Rich and Vickers-Rich 1989
Size comparison
To scale
Scale in metersOutline: typical ornithopod shape
Where its fossils were found
The evidence
Today
110 million years ago
Field notes
About Leaellynasaura
What it was like
Leaellynasaura was a small plant eater about 2 meters (7 feet) long, much of that a very long tail. It ran on two legs and had large eye sockets.
Its tail may have had more bones than that of almost any other small plant-eating dinosaur, and some scientists think the animal may have wrapped it around its body for warmth.
Its world
It lived about 113 to 110 million years ago, in the Early Cretaceous, in what is now Australia. At that time Australia lay far south, close to the pole, so winters were cold and dark for weeks at a time.
Its fossils come from the Eumeralla Formation, where it lived alongside the small plant eater Atlascopcosaurus and the ornithomimid-like Timimus. Its big eyes may have helped it see during the long polar winter.
How it was found
Rich and Vickers-Rich named Leaellynasaura in 1989. They named it after their daughter. Four finds are known.
Lived alongside
Found in the same rock formations
Close relatives
Other members of Elasmaria
Sources: WikidataNamed in: T. H. Rich and P. Vickers-Rich. 1989. Polar dinosaurs and biotas of the Early Cretaceous of southeastern Australia. National Geographic Research 5(1):15–53


