Huayangosaurus Click to enlarge image
Image: James Reece
© Australian Museum

Fast Facts

  • Classification
  • Size Range
    Small to medium-sized


Huayangosaurus taibaii was a small to medium-sized plant-eating stegosaur with primitive characteristics which lived around 180 million years ago.


Huayangosaurus taibaii had:

  • long forelimbs and a beak with teeth (lost in later stegosaurs);
  • vein-like cavities in the bony plates on its back which may have helped to regulate its body temperature or change the colour of the plates to deter predators or attract mates.

Feeding and diet

Huayangosaurus taibaii was a plant-eating stegosaurs.

Other behaviours and adaptations

Huayangosaurus taibaii also had a 'second brain' in the spinal cord in the hip area to help control its hind legs and tail.

Fossils description

Huayangosaurus taibaii was discovered in Hua Yang, now known as Sichuan. Taibaii comes from the poet Tai Bai who lived in Sichuan.