Tuojiangosaurus ‭(‬Tuo river lizard‭)

Short Info

Tuojiangosaurus ‭(‬Tuo river lizard‭)

Phonetic : Too-oh-jang-oh-sore-us

Named By : Dong et al.‭ ‬-‭ ‬1977

Diet : Herbivore

Size : Estimated 7 meters long

Type of Dinosaur : Armoured Dinosaur

Type Species : T.‭ ‬multispinus‭ (‬type‭)‬

Found in : China,‭ ‬Sichuan Province‭ ‬-‭ ‬Upper Shaximiao Formation

When it Lived : Late Jurassic, 157-154 million years ago

Tuojiangosaurus (meaning “Tuo River lizard”) is an herbivore dinosaurs, stegosaurians from in the Late Jurassic Period, recovered from the Upper Shaximiao Formation of the present-day Sichuan Province in China.


Natural History Museum TuojiangosaurusAyca Wilson from Farnborough, UK, CC BY 2.0, via Wikimedia Commons


In 1974, during the construction of the Wujiaba dam in Zigong, Sichuan, the remains of a stegosaurian were discovered.

The sole and unique specie from Tuojiangosaurus, Tuojiangosaurus multispinus, was first described and named in 1977 (exactly one hundred years following the designation of Stegosaurus by Othniel Charles Marsh) by Dong Zhiming, Zhou Shiwu, Li Xuanmin and Chang Yijong. The name itself is derived from the river (jiang) Tuo. The name for the specific location is derived of Latin multius “many”, and spina, “spine”.

The holotype, CV 209, was found in a layer of the Upper Shaximiao Formation, dating from the Oxfordian-Kimmeridgian. It is comprised of a complete skeleton , but it is missing pieces of the skull the lower jaws, limbs and tail. It was discovered in 1977 and was the largest stegosaurian Skeleton that was discovered in Asia. The specimen was paratype CV 220, a sacrum. In the following years, additional material has been reported to, including juveniles. The holotype was complemented by skull elements including the braincase and jaws lower.

A skeleton mounted of Tuojiangosaurus multispinus has been put displayed in Chongqing’s Municipal Museum of Chongqing. A mounted cast is displayed in the Natural History Museum, in London. Another display is at the Beijing Museum of Natural History in a battle with Yangchuanosaurus. The original dinosaur skeleton that was fossilised, discovered at Wujiaba Quarry 1977 is also in the Bolton Museum. Bolton Museum, United Kingdom.

Source: Wikipedia