Outline: a typical sauropod

Anacleto Fm., ArgentinaNamed 1927

Antarctosaurus

ant-ARK-toh-SORE-us

"southern lizard"

Lived
90 to 72 million years ago, Late Cretaceous
Diet
Herbivore
Length
about 18 m (59 ft)
Group
Sauropods
Found in
Argentina
Named by
Huene 1927

Size comparison

To scale

Where its fossils were found

The evidence

Today

2 finds

80 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Antarctosaurus

What it was like

Antarctosaurus was a titanosaur, one of the long-necked plant eaters that ruled the southern continents late in the age of dinosaurs. It may have been about 18 meters (59 feet) long. Its lower jaw was square at the front, a sign that it cropped plants in wide mouthfuls close to the ground.

Its world

It lived in the Late Cretaceous. Its best bones come from Argentina, including the Anacleto Formation. Other bones from Brazil, Uruguay and India have been linked to it, but many scientists doubt that they belong to the same animal.

How it was found

Huene named Antarctosaurus. Its name refers to the south, not to Antarctica. The original bones may not all come from one animal, and several extra species named later are now doubted, so much about this dinosaur is still uncertain.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Lithostrotia

Sources: WikidataNamed in: F. v. Huene. 1927. Short review of the present knowledge of the Sauropoda. Memoirs of the Queensland Museum 9(1):121-126