Look up · dinosaur 205 of 1,425
beaked plant-eater
Bonapartesaurus
Say it like this: “BOW-nuh-part-SOR-us”
Bonapartesaurus rionegrensis
Bonapartesaurus ate plants and walked on two or four 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
- 2017 · Cruzado-Caballero, P.; Powell, J.
- Hip height
- Not established
- Length
- 7 m · 23 ft
- Weight
- 1.7 tonnes
- Found in
- Argentina · Allen
- Food and walking
- Herbivore · Two or four legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Saurolophinae
The story in short
In 2017, P. Cruzado-Caballero and J. Powell published the name Bonapartesaurus. The name honors a person tied to the fossil or its study.
It lived in the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from Argentina, including the Allen Formation. It was a herbivore and could move on two or four legs.
Published estimates put Bonapartesaurus at a length near 7 m and a body mass around 1.7 tonnes.
On the family tree it sits in Saurolophinae, among the ornithopod dinosaurs.
Close relatives
Acristavus
Acristavus gagslarsoni
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Ahshislesaurus
Ahshislesaurus wimani
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Anasazisaurus
Anasazisaurus horneri
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago