Outline: a typical early ornithischian

Elliot Fm., LesothoNamed 1975

Abrictosaurus

"wakeful lizard"

Lived
201 to 193 million years ago, Early Jurassic
Diet
Herbivore
Group
Early ornithischians, Heterodontosauridae
Found in
Lesotho
Named by
Hopson 1975

Where its fossils were found

The evidence

Today

1 find

195 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Abrictosaurus

What it was like

Abrictosaurus was a small heterodontosaur, a plant eater that walked on two legs. Some specimens have fangs at the front of the jaw and some do not, which may be a difference between males and females or between adults and young.

Its world

It lived in the Early Jurassic, in what is now Lesotho. It comes from the Elliot Formation, where it shared the land with its relative Heterodontosaurus, the long-necked Massospondylus and the hunters Dracovenator and Megapnosaurus.

How it was found

Hopson named Abrictosaurus in 1975. The name was a reply to an idea that heterodontosaurs slept through dry seasons.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Heterodontosauridae

Sources: WikidataNamed in: J. A. Hopson. 1975. On the generic separation of the ornithischian dinosaurs Lycorhinus and Heterodontosaurus from the Stormberg Series (Upper Triassic) of South Africa. South African Journal of Science 71:302-305