Yuanmousaurus
| Yuanmousaurus Temporal range: Middle Jurassic | |
|---|---|
| Size | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Dinosauria | 
| Clade: | Saurischia | 
| Clade: | †Sauropodomorpha | 
| Clade: | †Sauropoda | 
| Family: | †Mamenchisauridae | 
| Genus: | †Yuanmousaurus Lü et al., 2006 | 
| Species: | †Y. jiangyiensis | 
| Binomial name | |
| †Yuanmousaurus jiangyiensis Lü et al., 2006 | |
Yuanmousaurus ("Yuanmou lizard") was a sauropod dinosaur from the Middle Jurassic period of China. It is known from incomplete remains, recovered in 2000 from the Zhanghe Formation in Yuanmou County in Yunnan Province. Yuanmousaurus was a relatively large sauropod and may have reached about 17 meters (56 ft) in length. It was a basal member of the Sauropoda, but its exact systematic position is unclear. A recent study placed Yuanmousaurus within the family Mamenchisauridae. It may be a dubious genus. The only and type species was Yuanmousaurus jiangyiensis.