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Original drawing of Sinotyrannus

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