| Gigantspinosaurus Temporal range: Late Jurassic, Oxfordian record
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| Skeletal mount of Gigantspinosaurus in the Zigong Dinosaur Museum | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Thyreophora |
| Clade: | †Stegosauria |
| Genus: | †Gigantspinosaurus Ouyang, 1992 |
| Species: | †G. sichuanensis
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| Binomial name | |
| †Gigantspinosaurus sichuanensis Ouyang, 1992
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Gigantspinosaurus (lit. 'giant-spined lizard') is a genus of herbivorous ornithischian dinosaur from the Late Jurassic. It was a stegosaur found in China.