Look up · dinosaur 1185 of 1,425
sharp-clawed runner · Disputed
Stenonychosaurus
Say it like this: “Sten-oh-NYE-ko-sore-us”
Stenonychosaurus inequalis
Stenonychosaurus ate meat and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Canada.
- When
- Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
- Named in
- 1932 · Sternberg, C. M.
- Hip height
- Not established
- Length
- 2.5 m · 8 ft
- Weight
- 35 kg · 77 lb
- Found in
- Canada · Dinosaur Park
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Troodontinae
The story in short
Stenonychosaurus was formally named in 1932 by C. M. Sternberg. The name means “narrow claw lizard.”
It lived in the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from Canada, including the Dinosaur Park Formation. It was a carnivore and walked on two legs.
Published estimates put Stenonychosaurus at a length near 2.5 m and a body mass around 35 kg.
On the family tree it sits in Troodontinae, among the theropod dinosaurs.
Close relatives
Albertavenator
Albertavenator curriei
Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago
Borogovia
Borogovia gracilicrus
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
Byronosaurus
Byronosaurus jaffei
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago