Genus: Oceanotitan MOCHO, ROYO-TORRES & ORTEGA, 2019
Etymology: Latin, Oceanus, "ocean," which is derived from the Greek word, "okeanos": This specimen was found in situ at the base of the coastal cliff, in a locality overlooking the Atlantic Ocean, and Greek, titan, "giant."

Species: dantasi MOCHO, ROYO-TORRES & ORTEGA, 2019
Etymology: In honor of the Portuguese paleontologist Pedro Dantas, who devoted his career to Portuguese vertebrate paleontology (particularly in the Lourinha, Torres Vedras, and Pombal regions), and was one of the drivers of the renaissance of Portuguese dinosaur paleontology toward the end of the 20th century. He was also respondible for the extraction of several dinosaur specimens, including the Dinheirosaurus lourinhanensis holotype.

Holotype: SHN 181

Locality: Coastal cliffs at Praria de Valmitao, Lourinha Municipality, Lisbon, Portugal.

Horizon: Praia da Amoreira-Porto Novo Formation.

Biostratigraphy:

Age: Uppermost Kimmeridgian-Lowermost Tithonian Stage, Malm Epoch, Late Jurassic.

Material:

Breakdown as follows:

SHI 181/000: 17 fragments of anterior and middle caudal neural arches.

SHI 181/001-008: 8 anterior caudal vertebrae.

SHI 181/009-019: 17 fragments of anterior and middle caudal neural arches.

SHI 181/020-021: An anterior chevron and a chevron fragment.

SHN 181/022: A right scapula.

SHN 181/023: A right coracoid.

SHI 181/024-025: Part of a postacetabular porcess of a left ilium.

SHN 181/026-027: 2 ischia.

SHN 181/028-029: 2 pubes.

SHN 181/030: A right femur.

SHN 181/031: A right tibia.

SHN 181/032: A right fibula.

SHN 181/033: A right astrgalus.