Look up · dinosaur 96 of 1,425
long-neck giant
Antarctosaurus
Say it like this: “an-TARK-to-SAWR-us”
Antarctosaurus wichmannianus
Antarctosaurus ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in Argentina.
- When
- Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
- Named in
- 1929 · Huene, F. V.
- Hip height
- 3.5 m · 11 ft
- Length
- 18 m · 59 ft
- Weight
- 33–65 tonnes
- Found in
- Argentina · Anacleto
- Food and walking
- Herbivore · Four legs
- Kind
- long-neck giant · Sauropod
- Family branch
- Titanosauria
The story in short
The genus Antarctosaurus dates to 1929, the year F. V. Huene described it. The name means “southern lizard.”
It lived in the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from Argentina, including the Anacleto Formation. It was a herbivore and walked on four legs.
Published estimates put Antarctosaurus at a length near 18 m, hips about 3.5 m high, and a body mass around 33–65 tonnes.
On the family tree it sits in Titanosauria, among the sauropod dinosaurs.
Close relatives
Aegyptosaurus
Aegyptosaurus baharijensis
Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago
Andesaurus
Andesaurus delgadoi
Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago
Argyrosaurus
Argyrosaurus superbus
Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago