Leaellynasaura ( name meaning "Leaellyn's Lizard") is a genus of small herbivorous ornithischian dinosaurs from the Mid Cretaceous in what is now Australia.
In the Series 2 episode "Spirits of the Ice Forest", a flock of Leaellynasaura where brought to the park from Mid Cretaceous Australia, 106 million years ago. They reside in the Ostrich Paddock enclosure.