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sharp-clawed runner
Sinotyrannus
Say it like this: “SIGH-no-tie-RAN-us”
Sinotyrannus kazuoensis
Sinotyrannus ate meat and walked on two legs. It lived in the Early Cretaceous. Bones have been found in China.
- When
- Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago
- Named in
- 2009 · Ji, Q.; Ji, S. A.; Zhang, L. J.
- Hip height
- 1.9 m · 6 ft
- Length
- 9–10 m · 30–33 ft
- Weight
- 2.5 tonnes
- Found in
- China · Jiufotang
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Proceratosauridae
The story in short
The genus Sinotyrannus dates to 2009, the year Q. Ji and colleagues described it. The name means “chinese tyrant.”
It lived in the Early Cretaceous (Aptian), roughly 121.4 to 113.2 million years ago. Finds come from China, including the Jiufotang Formation. It was a carnivore and walked on two legs.
Published estimates put Sinotyrannus at a length near 9–10 m, hips about 1.9 m high, and a body mass around 2.5 tonnes.
On the family tree it sits in Proceratosauridae, among the theropod dinosaurs.
Close relatives
Guanlong
Guanlong wucaii
Middle Jurassic · Late Jurassic (Callovian · Oxfordian) · roughly 165.3 to 154.8 million years ago
Kileskus
Kileskus aristotocus
Middle Jurassic (Bathonian) · roughly 168.2 to 165.3 million years ago
Proceratosaurus
Proceratosaurus bradleyi
Middle Jurassic (Bathonian) · roughly 168.2 to 165.3 million years ago