Chungkingosaurus
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Chungkingosaurus Temporal range: 160 Ma |
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| Mounted skeleton | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Order: | †Ornithischia |
| Suborder: | †Stegosauria |
| Family: | †Huayangosauridae |
| Genus: |
†Chungkingosaurus Dong et al., 1983 |
| Species: | †C. jiangbeiensis |
| Binomial name | |
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Chungkingosaurus jiangbeiensis Dong et al., 1983 |
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Chungkingosaurus, meaning "Chongqing Lizard", is a genus of herbivorous dinosaur from the Late Jurassic Upper Shaximiao Formation in what is now China. It is a member of the Stegosauria.
Fossils of Chungkingosaurus were found near Chongqing, China, from 1977 onwards. The type species, Chungkingosaurus jiangbeiensis, was named and described by Dong Zhiming, Zhou Shiwu, and Zhang Yihong in 1983. The generic name refers to Chonqqing in Sichuan. The specific name refers to the district of Jiangbei.
The holotype, CV 00206, was found in the Chunking Group of the Upper Shaximiao Formation. It consists of a partial skeleton, containing the snout, the front of the lower jaws, ten dorsal vertebrae, a pelvis with sacrum, a series of twenty-three tail vertebrae, the lower end of a humerus, three metacarpals, both thighbones and shinbones and five back plates.
Dong e.a. in 1983 described three additional species. These were not separately named but identified as Chungkingosaurus sp. 1-3. Chungkingosaurus sp. 1 was based on specimen CV 00207, a pelvis with sacrum. The next species, Chungkingosaurus sp. 2, was based on specimen CV 00205, a partial skeleton. The last species, Chungkingosaurus sp. 3, was based on specimen CV 00208, a series of ten vertebrae of a tail end with an articulated thagomizer. In 2014, Roman Ulansky named CV 00205 Chungkingosaurus giganticus, and CV 00205 Chungkingosaurus magnus.Peter Malcolm Galton and Kenneth Carpenter later identified both as nomina dubia, referring both to C. jiangbeiensis.
In 2006, Susannah Maidment and Wei Guangbiao considered Chungkingosaurus a valid genus, even though much of the material could no longer be localised. Specimen CV 00207 was by them no longer referred to Chungkingosaurus. However, Gregory S. Paul in 2010 suggested that Chungkingosaurus was the juvenile of Tuojiangosaurus.
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