Outline: a typical early ornithischian

Toqui Fm., ChileNamed 2015

Chilesaurus

"Chile lizard"

Type species Chilesaurus diegosuarezi

Lived
149 to 143 million years ago, Late Jurassic to Early Cretaceous
Diet
Herbivore
Group
Early ornithischians
Found in
Chile
Named by
Novas et al. 2015

Where its fossils were found

The evidence

Today

1 find

145 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Chilesaurus

What it was like

Chilesaurus is one of the strangest dinosaurs ever found. It was a small plant eater with leaf-shaped teeth and a beak, yet it had the body shape of a two-legged predator, with short arms and two fingers on each hand. Its hips look like those of the bird-hipped dinosaurs.

This mix of features makes it hard to place. Many scientists think it was an unusual theropod that turned to eating plants. Others think it sits near the base of the bird-hipped line. The debate is still open.

Its world

It lived in the Late Jurassic in what is now Chile. Its bones come from the Toqui Formation, where many skeletons of it were found together.

How it was found

Novas and colleagues named it in 2015. The type species is Chilesaurus diegosuarezi, which honors the boy who first found its bones.

Close relatives

Other members of Ornithischia

Sources: WikidataNamed in: F. E. Novas, L. Salgado, and M. Suárez, F. L. Agnolín, M. D. Ezcurra, N. R. Chimento, R. de la Cruz, M. P. Isasi, A. O. Vargas, D. Rubilar-Rogers. 2015. An enigmatic plant-eating theropod from the Late Jurassic period of Chile. Nature 522(7556):331-334