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sharp-clawed runner · Disputed
Newtonsaurus
Say it like this: “NYOO-ton-SOR-us”
Newtonsaurus cambrensis
Newtonsaurus ate meat and walked on two legs. It lived in the Late Triassic. Bones have been found in the United Kingdom.
- When
- Late Triassic (Rhaetian) · roughly 205.7 to 201.4 million years ago
- Named in
- 2025 · Evans, O.; Howells, C.; Wintle, N.; Benton, M. J.
- Hip height
- Not established
- Length
- 5–7 m · 16–23 ft
- Weight
- Not established
- Found in
- the United Kingdom · Lilstock
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Neotheropoda
The story in short
In 2025, O. Evans and colleagues published the name Newtonsaurus. The name honors a person tied to the fossil or its study.
Fossils referred to Newtonsaurus date to the Late Triassic (Rhaetian), roughly 205.7 to 201.4 million years ago. Finds come from the United Kingdom, including the Lilstock Formation. It was a carnivore and walked on two legs.
Published estimates put Newtonsaurus at a length near 5–7 m.
On the family tree it sits in Neotheropoda, among the theropod dinosaurs.
Close relatives
Cryolophosaurus
Cryolophosaurus ellioti
Early Jurassic (Sinemurian · Pliensbachian) · roughly 199.5 to 184.2 million years ago
Dilophosaurus
Dilophosaurus wetherilli
Early Jurassic (Hettangian · Sinemurian · Pliensbachian) · roughly 201.4 to 184.2 million years ago
Dolichosuchus
Dolichosuchus cristatus
Late Triassic (Norian) · roughly 227.3 to 205.7 million years ago