Outline: a typical sauropod

Allen Fm., ArgentinaNamed 2000

Rocasaurus

"Roca lizard"

Lived
72 to 66 million years ago, Late Cretaceous
Diet
Herbivore
Group
Sauropods, Saltasauridae
Found in
Argentina
Named by
Salgado and Azpilicueta 2000

Where its fossils were found

The evidence

Today

2 finds

70 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Rocasaurus

What it was like

Rocasaurus was a small titanosaur, a long-necked plant eater related to Saltasaurus. It is known from bones of the backbone, hips and legs.

Its world

It lived about 72 to 66 million years ago, at the end of the Late Cretaceous, in what is now Argentina. Its bones come from the Allen Formation, where it shared the land with the raptor Austroraptor, the titanosaur Aeolosaurus and the armored Patagopelta.

How it was found

Salgado and Azpilicueta named it in 2000. It is named after a nearby town.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Saltasauridae

Sources: WikidataNamed in: L. Salgado and C. Azpilicueta. 2000. Un nuevo saltasaurino (Sauropoda, Titanosauridae) de la provincia de Río Negro (Formación Allen, Cretácico Superior), Patagonia, Argentina [A new saltasaurine (Sauropoda, Titanosauridae) from Río Negro province (Allen Formation, Upper Cretaceous), Patagonia, Argentina. Ameghiniana 37(3):259-264