Sidersaura
| Sidersaura Temporal range: Late Cretaceous,  | |
|---|---|
| Life reconstruction | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Dinosauria | 
| Clade: | Saurischia | 
| Clade: | †Sauropodomorpha | 
| Clade: | †Sauropoda | 
| Superfamily: | †Diplodocoidea | 
| Family: | †Rebbachisauridae | 
| Genus: | †Sidersaura Lerzo et al., 2024 | 
| Species: | †S. marae | 
| Binomial name | |
| †Sidersaura marae Lerzo et al., 2024 | |
Sidersaura (meaning "star lizard") is an extinct genus of rebbachisaurid sauropod dinosaur from the Late Cretaceous Huincul Formation of Argentina. The genus contains a single species, S. marae, known from the remains of four individuals. Sidersaura represents one of the largest known rebbachisaurids.