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| Calvarius Temporal range: Late Cretaceous,
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Neornithischia |
| Clade: | †Ornithopoda |
| Clade: | †Styracosterna |
| Genus: | †Calvarius Prieto-Márquez & Sellés, 2023 |
| Species: | †C. rapidus
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| Binomial name | |
| †Calvarius rapidus Prieto-Márquez & Sellés, 2023
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Calvarius (meaning "suffering") is a genus of styracosternan ornithopod from the Late Cretaceous Talarn Formation of Spain. The genus contains a single species, Calvarius rapidus, known from a single metatarsal.[1]
- ^ Prieto-Márquez, A.; Sellés, A. (2023). "Evolutionary convergence in a small cursorial styracosternan ornithopod dinosaur from western Europe". Journal of Vertebrate Paleontology. e2210632. doi:10.1080/02724634.2023.2210632.