| Geranosaurus Temporal range: Early Jurassic, ~
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| Holotype jaw | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Family: | †Heterodontosauridae |
| Genus: | †Geranosaurus Broom, 1911 |
| Type species | |
| †Geranosaurus atavus Broom, 1911
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Geranosaurus (meaning "crane reptile") is a genus of heterodontosaurid ornithischian dinosaur from the Early Jurassic. The type and only species is G. atavus.