Tuojiangosaurus was up to 23 feet (7 meters) long, and about 6½ feet (2 meters) high. It weighed something around 4 tons.
Tuojiangosaurus was related to Stegosaurus and Kentrosaurus, and had an arrangement of plates on its back similar to that of Kentrosaurus.
One important difference from Stegosaurus, is that Tuojiangosaurus lacked spines on its vertebrae (to which Stegosaurus had muscles attached). From this, scientists deduct that Tuojiangosaurus was probably therefore unable to rear up on its hind legs (whereas Stegosaurus is thought capable of performing such a feat) - and as a result, the diet Tuojiangosaurus must have been restricted to low-lying vegetation.
The first fossils of Tuojiangosaurus (two specimens were found, one of which was half complete) were discovered in 1977, and the animal was named in the same year. Today, a mounted skeleton of the animal can be found in the Municipal Museum in Chongqing, China, and there is also a mounted cast of a skeleton in the Natural History Museum, London, England.
Tuojiangosaurus was a herbivore (plant-eater) that lived about 155 million years ago
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