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sharp-clawed runner
Haplocheirus
Say it like this: “HAP-lo-KY-ruhs”
Haplocheirus sollers
Haplocheirus ate meat and walked on two legs. It lived in the Middle Jurassic · Late Jurassic. Bones have been found in China.
- When
- Middle Jurassic · Late Jurassic (Callovian · Oxfordian) · roughly 165.3 to 154.8 million years ago
- Named in
- 2010 · Choiniere, J. N.; Xu, X.; Clark, J. M.; Forster, C. A.; Guo, Y.; Han, F.
- Hip height
- 0.6 m · 2 ft
- Length
- 2 m · 7 ft
- Weight
- 21–43 kg · 46–95 lb
- Found in
- China · Shishugou
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Alvarezsauroidea
The story in short
In 2010, J. N. Choiniere and colleagues published the name Haplocheirus.
It lived in the Middle Jurassic · Late Jurassic (Callovian · Oxfordian), roughly 165.3 to 154.8 million years ago. Finds come from China, including the Shishugou Formation. It was a carnivore and walked on two legs.
Published estimates put Haplocheirus at a length near 2 m, hips about 0.6 m high, and a body mass around 21–43 kg.
On the family tree it sits in Alvarezsauroidea, among the theropod dinosaurs.
Close relatives
Alnashetri
Alnashetri cerropoliciensis
Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago
Bannykus
Bannykus wulatensis
Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago
Shishugounykus
Shishugounykus inexpectus
Middle Jurassic · Late Jurassic (Callovian · Oxfordian) · roughly 165.3 to 154.8 million years ago