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sharp-clawed runner
Segisaurus
Say it like this: “SAYG-ee-SAWR-us”
Segisaurus halli
Segisaurus ate meat and walked on two legs. It lived in the Early Jurassic. Bones have been found in the United States.
- When
- Early Jurassic (Pliensbachian · Toarcian) · roughly 192.9 to 174.7 million years ago
- Named in
- 1936 · Camp, C. L.
- Hip height
- 0.2 m · 1 ft
- Length
- 1 m · 3 ft
- Weight
- 4–7 kg · 9–15 lb
- Found in
- the United States · Navajo Sandstone
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Coelophysidae
The story in short
The genus Segisaurus dates to 1936, the year C. L. Camp described it. The name means “tsegi Canyon lizard.”
It lived in the Early Jurassic (Pliensbachian · Toarcian), roughly 192.9 to 174.7 million years ago. Finds come from the United States, including the Navajo Sandstone Formation. It was a carnivore and walked on two legs.
Published estimates put Segisaurus at a length near 1 m, hips about 0.2 m high, and a body mass around 4–7 kg.
On the family tree it sits in Coelophysidae, among the theropod dinosaurs.
Close relatives
Camposaurus
Camposaurus arizonensis
Late Triassic (Norian) · roughly 227.3 to 205.7 million years ago
Coelophysis
Coelophysis bauri
Late Triassic (Norian · Rhaetian) · roughly 227.3 to 201.4 million years ago
Lucianovenator
Lucianovenator bonoi
Late Triassic (Norian) · roughly 227.3 to 205.7 million years ago