Leaellynasaura Facts
| Diet | Herbivore |
| Height | 0.6m |
| Length | 2m |
| Weight | 10 kg |
| Environment | Land |
| Era | Cretaceous |
| Period | Early Cretaceous |
| Type | Ornithopod |
| Location | Australia |

| Diet | Herbivore |
| Height | 0.6m |
| Length | 2m |
| Weight | 10 kg |
| Environment | Land |
| Era | Cretaceous |
| Period | Early Cretaceous |
| Type | Ornithopod |
| Location | Australia |
Leaellynasaura was a small, agile ornithopod dinosaur that lived in Australia during the Early Cretaceous period, approximately 118-110 million years ago. At just 2 metres long and weighing around 10 kilograms, this herbivorous dinosaur was roughly the size of a large dog. It inhabited the ancient polar forests of what is now Victoria, where conditions were much cooler and darker than most other dinosaur habitats of the time.
This remarkable ornithopod was perfectly adapted to life in Australia's prehistoric polar environment. It possessed unusually large eyes relative to its body size, suggesting excellent vision that would have been crucial for navigating the long, dark polar winters. Its brain was also proportionally large, indicating advanced sensory processing abilities. Leaellynasaura had a lightweight build with long, powerful hind legs that made it a swift runner, essential for escaping predators in the open woodland clearings.
As a herbivore, Leaellynasaura fed on the diverse plant life that flourished in the ancient polar forests, including ferns, conifers, and early flowering plants. Its small, sharp teeth were well-suited for processing tough, fibrous vegetation. The dinosaur's long tail helped provide balance whilst running and may have been used for communication or display purposes.
What makes Leaellynasaura particularly special is that it represents one of the few dinosaurs known to have thrived in polar conditions, demonstrating the remarkable adaptability of these ancient creatures to extreme environments that were previously thought unsuitable for dinosaur life.
Leaellynasaura had unusually large eyes for its body size, giving it exceptional vision for life in polar darkness. It possessed a lightweight build with long, powerful hind legs and a lengthy tail that made up much of its 2-metre length.
Leaellynasaura was likely a fast runner that lived in small groups, using its excellent eyesight to spot predators and navigate through the dark polar forests. It probably spent much of its time foraging for vegetation and may have migrated seasonally to follow food sources during the harsh polar winters.
Leaellynasaura was first described by Tom Rich and Patricia Vickers-Rich in 1989. The original fossils were discovered at Dinosaur Cove, Victoria, Australia.