Protognathosaurus oxyodon

Dinosaur: Protognathosaurus oxyodon

Jurassic: 168.2–161.5 Ma

Type: Sauropod

*Length:**	14 m	45.9 ft
*Weight:**	6.3 tons	13,889 lb

ESR: 2.5 / 4 (estimated size reliability)
*The largest known specimen

Area: Asia

Epoch: Middle Jurassic
Stage: Bathonian-Callovian
Years: 168.2–161.5 Ma

Status: nomen dubium
Author: Olshevsky
Year: 1991

Area: Asia
Country: China
Region: Sichuan
Formation: Lower Shaximiao

Material: Incomplete dentary.
References: Glut, (1997). Dinosaurs - The Encyclopedia.

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