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long-neck giant
Choconsaurus
Choconsaurus baileywillisi
Choconsaurus ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in Argentina.
- When
- Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago
- Named in
- 2018 · Simón, E.; Salgado, L.; Calvo, J. O.
- Hip height
- 3.1 m · 10 ft
- Length
- 21 m · 69 ft
- Weight
- 18 tonnes
- Found in
- Argentina · Huincul
- Food and walking
- Herbivore · Four legs
- Kind
- long-neck giant · Sauropod
- Family branch
- Somphospondyli
The story in short
Choconsaurus was formally named in 2018 by E. Simón and colleagues. The name means “el Chocón lizard.”
It lived in the Late Cretaceous (Cenomanian), roughly 100.5 to 93.9 million years ago. Finds come from Argentina, including the Huincul Formation. It was a herbivore and walked on four legs.
Published estimates put Choconsaurus at a length near 21 m, hips about 3.1 m high, and a body mass around 18 tonnes.
On the family tree it sits in Somphospondyli, among the sauropod dinosaurs.
Close relatives
Abdarainurus
Abdarainurus barsboldi
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Angolatitan
Angolatitan adamastor
Late Cretaceous (Coniacian) · roughly 89.8 to 85.7 million years ago
Arkharavia
Arkharavia heterocoelica
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago