Fabrosaurus Australis is by some considered to be the same animal as Lesothosaurus, Both African genera that lived primarily in the Triassic & early Jurassic. It is lucky that it is so similar to Lesothosaurus, since only the jawbone has been found. Currently, Fabrosaurus is classified as a very early Ornithopod, but it may be an early Thyreopean, belong in the same family as the Pachycephalosaurs & Ceratopsians, or come under the family Fabrosaurisdae, which would be the root of all Ornithischians. The family Fabrosauridae was established by Richard Owen, after studying jaw & tooth fragments of what is now Echinodon. Later, in 1964, Fabrosaurus was named by Leonard Ginsburg. It would have been about the size of a hen, 3 feet long, with very small arms. Its legs were longer, suggesting it was a swift animal. Its head was small, with many tiny teeth. It is likely the bones were hollow.