| Nodosaurus Temporal range: Late Cretaceous,
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| Vertebrae and armor of the holotype | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Thyreophora |
| Clade: | †Ankylosauria |
| Family: | †Nodosauridae |
| Subfamily: | †Nodosaurinae |
| Genus: | †Nodosaurus Marsh, 1889 |
| Type species | |
| †Nodosaurus textilis | |
Nodosaurus (meaning 'knobbed lizard') is a genus of herbivorous nodosaurid ankylosaurian dinosaur from the Late Cretaceous, the fossils of which are found exclusively in the Frontier Formation in Wyoming.