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sharp-clawed runner
Arkansaurus
Say it like this: “AHR-can-SOR-us”
Arkansaurus fridayi
Arkansaurus ate plants and walked on two legs. It lived in the Early Cretaceous. Bones have been found in the United States.
- When
- Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago
- Named in
- 2018 · Hunt, R. K.; Quinn, J. H.
- Hip height
- Not established
- Length
- 4.6 m · 15 ft
- Weight
- 381 kg · 840 lb
- Found in
- the United States
- Food and walking
- Herbivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Ornithomimosauria
The story in short
Arkansaurus was formally named in 2018 by R. K. Hunt and J. H. Quinn. The name means “arkansas lizard.”
Fossils referred to Arkansaurus date to the Early Cretaceous (Albian), roughly 113.2 to 100.5 million years ago. Finds come from the United States. It was a herbivore and walked on two legs.
Published estimates put Arkansaurus at a length near 4.6 m and a body mass around 381 kg.
On the family tree it sits in Ornithomimosauria, among the theropod dinosaurs.