| Chiayusaurus Temporal range: Early Cretaceous,
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | †Sauropodomorpha |
| Clade: | †Sauropoda |
| Clade: | †Macronaria |
| Family: | †Euhelopodidae |
| Genus: | †Chiayusaurus Bohlin, 1953 |
| Species: | †C. lacustris
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| Binomial name | |
| †Chiayusaurus lacustris Bohlin, 1953
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| Other species | |
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| Synonyms | |
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Chiayusaurus (meaning "Chia-yu-kuan lizard", after where it was found) is a genus of sauropod dinosaur known from teeth found in China and possibly also South Korea. Two species have been named for this obscure genus, though only the type, C. lacustris, is still seen as valid. It was originally named as Chiayüsaurus, but the ICZN does not permit special characters, so the name was corrected to Chiayusaurus. The obsolete name can still be seen in older sources, though. As a sauropod, Chiayusaurus would have been a large, quadrupedal herbivore.[1]