Back Eomamenchisaure Catalan Eomamenchisaurus German ائومامنچیسور Persian Eomamenchisaurus French エオマメンチサウルス Japanese Еомаменчисаурус Macedonian ഇയോമാമുൻച്ചിസോറസ് Malayalam Eomamenchisaurus Dutch Eomamenchizaur Polish Eomamenchisaurus Vietnamese
| Eomamenchisaurus Temporal range: Middle Jurassic,
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | †Sauropodomorpha |
| Clade: | †Sauropoda |
| Family: | †Mamenchisauridae |
| Genus: | †Eomamenchisaurus Lü et al., 2008 |
| Species: | †E. yuanmouensis
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| Binomial name | |
| †Eomamenchisaurus yuanmouensis Lü et al., 2008
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Eomamenchisaurus (meaning "dawn Mamenchisaurus") is a genus of mamenchisaurid sauropod dinosaur from the Middle Jurassic Zhanghe Formation of Yuanmou, Yunnan, China. The type species is E. yuanmouensis, described by Lü Junchang and colleagues in 2008.