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beaked plant-eater
Chakisaurus
Say it like this: “SHAH-kee-SOR-us”
Chakisaurus nekul
Chakisaurus ate plants and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Argentina.
- When
- Late Cretaceous (Cenomanian · Turonian) · roughly 100.5 to 89.8 million years ago
- Named in
- 2024 · Nogueira, R. A.; Rozadilla, S.; Agnolín, F. L.; García Marsà, J. A.; Motta, M. J.; Novas, F. E.
- Hip height
- 1 m · 3 ft
- Length
- 3.7 m · 12 ft
- Weight
- 140 kg · 309 lb
- Found in
- Argentina · Huincul
- Food and walking
- Herbivore · Two legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Elasmaria
The story in short
Chakisaurus was formally named in 2024 by R. A. Nogueira and colleagues. The name means “elder guanaco lizard.”
It lived in the Late Cretaceous (Cenomanian · Turonian), roughly 100.5 to 89.8 million years ago. Finds come from Argentina, including the Huincul Formation. It was a herbivore and walked on two legs.
Published estimates put Chakisaurus at a length near 3.7 m, hips about 1 m high, and a body mass around 140 kg.
On the family tree it sits in Elasmaria, among the ornithopod dinosaurs.
Close relatives
Anabisetia
Anabisetia saldiviai
Late Cretaceous (Turonian) · roughly 93.9 to 89.8 million years ago
Atlascopcosaurus
Atlascopcosaurus loadsi
Early Cretaceous (Barremian · Aptian · Albian) · roughly 125.8 to 100.5 million years ago
Diluvicursor
Diluvicursor pickeringi
Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago