| Xianshanosaurus Temporal range: Early Cretaceous,
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| Reconstructed skeleton | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | †Sauropodomorpha |
| Clade: | †Sauropoda |
| Clade: | †Macronaria |
| Clade: | †Titanosauriformes |
| Clade: | †Somphospondyli |
| Genus: | †Xianshanosaurus Lü et al., 2009 |
| Type species | |
| Xianshanosaurus shijiagouensis Lü et al., 2009
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Xianshanosaurus (Chinese: 岘山龙; pinyin: xiànshānlóng)[1] is a genus of sauropod dinosaur from the Early Cretaceous (Aptian-Albian) of the Ruyang Basin in Henan Province, China. Its type and only species is Xianshanosaurus shijiagouensis. It was described in 2009 by a team of paleontologists led by Lü Junchang. Xianshanosaurus may be a titanosaur, and Daxiatitan may be its closest relative, but its evolutionary relationships remain controversial.