New work on ornithischian interrelationships suggests that heterodontosaurids are the basal-most members of this group, but this result remains controversial.
Re-description of key heterodontosaurid specimens in the Natural History Museum’s collections, including Abrictosaurus, is being carried out in order to test this idea.
Dr Richard Butler, Bayerische Staatssammlung für Paläontologie und Geologie (BSPG), Munich