Outline: a typical early dinosaur

Santa Maria Fm., BrazilNamed 1970

Staurikosaurus

STOR-ik-oh-SORE-us

"Southern Cross lizard"

Type species Staurikosaurus pricei

Lived
237 to 227 million years ago, Late Triassic
Length
about 2 m (7 ft)
Group
Early dinosaurs, Herrerasauridae
Found in
Brazil
Named by
Colbert 1970

Size comparison

To scale

Where its fossils were found

The evidence

Today

2 finds

230 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Staurikosaurus

What it was like

Staurikosaurus was one of the earliest dinosaurs, a slim two-legged predator about 2 meters (7 feet) long. It belonged to the herrerasaurids, a family of early hunters with sharp, curved teeth and a long tail for balance.

Its world

It lived in the Late Triassic in what is now Brazil. Its bones come from the Santa Maria Formation, one of the richest sources of early dinosaurs. Other early dinosaurs from these rocks include the small plant eater Saturnalia and the predator Gnathovorax.

How it was found

Colbert named Staurikosaurus in 1970. The type species is Staurikosaurus pricei. Its name comes from a star pattern seen only from the Southern Hemisphere, and it was one of the first Triassic dinosaurs described from South America.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Herrerasauridae

Sources: WikidataNamed in: E. H. Colbert. 1970. A saurischian dinosaur from the Triassic of Brazil. American Museum Novitates 2405:1-39