Abrictosaurus

Abrictosaurus (; "wakeful lizard") is a genus of heterodontosauriddinosaur that lived during the Early Jurassic in what is now in parts of southern Africa such as Lesotho and South Africa. It was a bipedalherbivore or omnivore and was one of the most basal heterodontosaurids. It was approximately 1.2 metres (3.9 ft) long and weighed less than 45 kilograms (99 lb).

This dinosaur is known from the fossil remains of only two individuals, found in the Upper Elliot Formation of Qacha's Nek District in Lesotho and Cape Province in South Africa. The Upper Elliot is thought to date from the Hettangian and Sinemurian stages of the Early Jurassic Period, approximately 200 to 190 million years ago. This formation is thought to preserve sand dunes as well as seasonal floodplains, in a semiarid environment with sporadic rainfall. Other dinosaurs found in this formation include the theropodMegapnosaurus, the sauropodomorphMassospondylus, as well as other heterodontosaurids like Heterodontosaurus and Lycorhinus. Remains of terrestrialcrocodylomorphs, cynodonts and early mammals are also abundant.