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long-neck giant
Overosaurus
Say it like this: “oh-VAIR-o-SAWR-us”
Overosaurus paradasorum
Overosaurus ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in Argentina.
- When
- Late Cretaceous (Santonian) · roughly 85.7 to 83.6 million years ago
- Named in
- 2013 · Coria, R. A.; Filippi, L. S.; Chiappe, L. M.; García, R.; Arcucci, A. B.
- Hip height
- 1.6 m · 5 ft
- Length
- 10 m · 33 ft
- Weight
- 1.8 tonnes
- Found in
- Argentina · Bajo de la Carpa
- Food and walking
- Herbivore · Four legs
- Kind
- long-neck giant · Sauropod
- Family branch
- Aeolosaurini
The story in short
In 2013, R. A. Coria and colleagues published the name Overosaurus. The name means “overo lizard.”
Fossils referred to Overosaurus date to the Late Cretaceous (Santonian), roughly 85.7 to 83.6 million years ago. Finds come from Argentina, including the Bajo de la Carpa Formation. It was a herbivore and walked on four legs.
Published estimates put Overosaurus at a length near 10 m, hips about 1.6 m high, and a body mass around 1.8 tonnes.
On the family tree it sits in Aeolosaurini, among the sauropod dinosaurs.
Close relatives
Adamantisaurus
Adamantisaurus mezzalirai
Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago
Aeolosaurus
Aeolosaurus rionegrinus
Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago
Arrudatitan
Arrudatitan maximus
Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago