Look up · dinosaur 703 of 1,425
bird-hipped dinosaur · Doubtful name
Laosaurus
Say it like this: “LAY-oh-SAWR-us”
Laosaurus celer
Laosaurus ate plants and walked on two legs. It lived in the Late Jurassic. Bones have been found in the United States.
- When
- Late Jurassic (Kimmeridgian · Tithonian) · roughly 154.8 to 143.1 million years ago
- Named in
- 1878 · Marsh, O. C.
- Hip height
- Not established
- Length
- Not established
- Weight
- Not established
- Found in
- the United States · Morrison
- Food and walking
- Herbivore · Two legs
- Kind
- bird-hipped dinosaur · Ornithischian
- Family branch
- Neornithischia
The story in short
Laosaurus was formally named in 1878 by O. C. Marsh. The name means “stone or fossil lizard.”
It lived in the Late Jurassic (Kimmeridgian · Tithonian), roughly 154.8 to 143.1 million years ago. Finds come from the United States, including the Morrison Formation. It was a herbivore and walked on two legs.
The fossils of Laosaurus are too incomplete for a responsible length, hip height, or weight, so those fields are left blank on purpose.
On the family tree it sits in Neornithischia, among the bird-hipped dinosaurs.
Close relatives
Agilisaurus
Agilisaurus louderbacki
Middle Jurassic · Late Jurassic (Bajocian–Oxfordian) · roughly 170.9 to 154.8 million years ago
Enigmacursor
Enigmacursor mollyborthwickae
Late Jurassic (Kimmeridgian · Tithonian) · roughly 154.8 to 143.1 million years ago
Hexinlusaurus
Hexinlusaurus multidens
Middle Jurassic · Late Jurassic (Bajocian–Oxfordian) · roughly 170.9 to 154.8 million years ago