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sharp-clawed runner
Joaquinraptor
Say it like this: “wah-KEEN-rap-tor”
Joaquinraptor casali
Joaquinraptor ate meat and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Argentina.
- When
- Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
- Named in
- 2025 · Ibiricu, L. M.; Lamanna, M. C.; Álvarez, B. N.; Cerda, I. A.; Caglianone, J. L.; Cardozo, N. V.; Luna, M.; Martínez, R. D.
- Hip height
- Not established
- Length
- 7 m · 23 ft
- Weight
- 1 tonnes
- Found in
- Argentina · Lago Colhué Huapi
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Megaraptoridae
The story in short
Joaquinraptor was formally named in 2025 by L. M. Ibiricu and colleagues. The name means “joaquín thief.”
It lived in the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from Argentina, including the Lago Colhué Huapi Formation. It was a carnivore and walked on two legs.
Published estimates put Joaquinraptor at a length near 7 m and a body mass around 1 tonnes.
On the family tree it sits in Megaraptoridae, among the theropod dinosaurs.
Close relatives
Aerosteon
Aerosteon riocoloradensis
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Australovenator
Australovenator wintonensis
Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago
Maip
Maip macrothorax
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago