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Temporal range: Upper Cretaceous 80 mya
Wannanosaurus for wiki review.jpg
Scientific classification
Kingdom: Animalia
Class: Sauropsida
Superorder: Dinosauria
Order: Ornithischia
Suborder: Cerapoda
Infraorder: Pachycephalosauria
Family: Pachycephalosauridae
Genus: Wannanosaurus

Wannanosaurus is the smallest known ornithischian dinosaur. Its length is estimated at just less than a metre.[1] It lived in the Upper Cretaceous, about 80 million years ago, and was found in Anhui, China.[2]

It is known from a single partial skeleton, including a partial skull roof and lower jaw, an upper leg and lower leg, part of a rib, and other fragments. It was herbivorous, but may also have eaten insects. Wannosaurus means Wanno lizard. It is one of several pachycephalosaurs with flat-topped skulls.

References[change | change source]

  1. Estimated from the length of its femur; the skeleton is not complete.
  2. Hou Lian-Hai 1977. A new primitive Pachycephalosaurian from Anhui, China. Vertebrata PalAsiatica 15: 198–202.