Shunosaurus

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Shunosaurus Fossil range: Mid Jurassic
Shunosaurus lii
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Superorder: Dinosauria Order: Saurischia Suborder: Sauropodomorpha Infraorder: Sauropoda Family: Cetiosauridae Genus: Shunosaurus Dong, Zhou, & Zhang, 1983
Species
S. lii Dong, Zhou, and Zhang, 1983 (type) "S. ziliujingensis" Anonymous, 1986 (nomen nudum)

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 Sichuan. It was collected from the Lower Shaximiao Formation in Dashanpu, Zigong. It shared the local Middle Jurassic landscape with other sauropods Datousaurus, Omeisaurus and Protognathosaurus, the possible ornithopod Xiaosaurus, and the early stegosaur Huayangosaurus, as well as the carnivorous Gasosaurus.

Contents 1 Discovery and species 2 Classification 3 Paleobiology 4 References

[edit] Discovery and species

First described in 1983, Shunosaurus is now known from several complete or near-complete skeletons, making it anatomically one of the best known sauropods. The type species, S. lii, was described by Dong, Zhou, and Zhang in 1983. A second species, "S. ziliujingensis", has never been formally described, and remains a nomen nudum. Shunosaurus skeletons are on display at the Zigong Dinosaur Museum in Zigong, Sichuan Province, and the Beijing Museum of Natural History.

[edit] Classification

Shunosaurus is classified as a basal eusauropod. It is related to Rhoetosaurus from Queensland in Australia.

[edit] Paleobiology

At around 10 metres long, Shunosaurus was fairly short-necked (for a sauropod) and had a short deep skull, with fairly robust spatulate teeth. In 1989 its tail was found to have ended in a club,^[1] probably used for fending off enemies.

[edit] References