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sharp-clawed runner
Kayrasaurus
Kayrasaurus changliensis
Kayrasaurus ate plants and walked on two legs. It lived in the Early Cretaceous. Bones have been found in China.
- When
- Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago
- Named in
- 2026 · Liao, C. C.; Freimuth, W. J.; Zanno, L. E.; Xu, X.
- Hip height
- Not established
- Length
- 3.6 m · 12 ft
- Weight
- 117–274 kg · 258–604 lb
- Found in
- China · Yixian
- Food and walking
- Herbivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Therizinosauria
The story in short
In 2026, C. C. Liao and colleagues published the name Kayrasaurus.
It lived in the Early Cretaceous (Barremian), roughly 125.8 to 121.4 million years ago. Finds come from China, including the Yixian Formation. It was a herbivore and walked on two legs.
Published estimates put Kayrasaurus at a length near 3.6 m and a body mass around 117–274 kg.
On the family tree it sits in Therizinosauria, among the theropod dinosaurs.
Close relatives
Falcarius
Falcarius utahensis
Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago
Jianchangosaurus
Jianchangosaurus yixianensis
Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago
Lingyuanosaurus
Lingyuanosaurus sihedangensis
Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago