Shunosaurus Temporal range: Middle Jurassic, 170 Ma |
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Mount in Helsinki | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Clade: | Dinosauria |
Order: | Saurischia |
Suborder: | †Sauropodomorpha |
Genus: |
†Shunosaurus Dong et al., 1983 |
Species: | †S. lii |
Binomial name | |
Shunosaurus lii Dong et al., 1983 |
Shunosaurus, meaning "Shu Lizard", is a genus of sauropod dinosaur from Middle Jurassic (Bathonian–Callovian) beds in Sichuan Province in China, 170 million years ago. The name derives from "Shu", an ancient name for the Sichuan province.
The first fossil of Shunosaurus was discovered in 1977 by a group of students, practising paleontological excavation at a road bank. The type species, Shunosaurus lii, was described and named by Dong Zhiming, Zhou Shiwu and Zhang Yihong in 1983. The generic name derives from "Shu", an ancient name for Sichuan. The specific name honours hydrologist Li Bing, the governor of Sichuan in the third century BC.
The holotype, IVPP V.9065, was collected from the Lower Xiashaximiao Formation near Dashanpu, Zigong. It consists of a partial skeleton. Later about twenty more major specimens were discovered, including several complete or near-complete skeletons, skulls and juveniles, making Shunosaurus one of the best anatomically known sauropods, with 94% of all skeletal elements identified. Shunosaurus skeletons are on display at the Zigong Dinosaur Museum in Zigong, Sichuan Province, and the Beijing Museum of Natural History.
A second species, S. ziliujingensis, a name mentioned in the Zigong museum guide to indicate a smaller and older form, has never been formally described, and thus remains a nomen nudum.