Dinosauria Genasauria Late Jurassic Neornithischia North America Ornithischia

“Laosaurus” gracilis

Dinosaur: "Laosaurus" gracilis

Jurassic: 149.2–145 Ma

Length*:

1.1 m

3.6 ft

ESR: 1 / 4 (estimated size reliability)
*The largest known specimen

North America

Area: North America

Period

Epoch: Late Jurassic
Stage: Early Tithonian
Years: 149.2–145 Ma

Details

Status: nomen dubium
Author: Marsh
Year: 1878

Distribution

Area: North America
Country: USA
Region: Wyoming
Formation: Morrison

Classification

Dinosauria
Ornithischia
Genasauria
Neornithischia

Sources

Material: Vertebrae and portions of both hindlimbs.
References: Marsh, Othniel Charles (1878). "Notice of new dinosaurian reptiles".

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