Oceanotitan
| Oceanotitan Temporal range: Late Jurassic,  | |
|---|---|
| Skeletal reconstruction with known material in white | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Dinosauria | 
| Clade: | Saurischia | 
| Clade: | †Sauropodomorpha | 
| Clade: | †Sauropoda | 
| Clade: | †Macronaria | 
| Clade: | †Camarasauromorpha | 
| Clade: | †Titanosauriformes | 
| Genus: | †Oceanotitan Mocho, Moyo-Torres & Ortega, 2019 | 
| Species: | †O. dantasi | 
| Binomial name | |
| †Oceanotitan dantasi Mocho, Moyo-Torres & Ortega, 2019 | |
Oceanotitan (meaning "ocean giant") is a genus of sauropod dinosaur known from the Upper Jurassic (latest Kimmeridgian stage, about 149 million years ago) Lourinha Formation of Portugal. It is represented by a single specimen consisting of several tail vertebrae and appendicular bones. It contains one species, Oceanotitan dantasi. Oceanotitan is classified as possibly one of the earliest members of the Somphospondyli, a group of sauropods that includes the titanosaurs.