Genus: Losillasaurus CASANOVAS, SANTAFE, & SANZE, 2001
Etymology: In reference to Losilla, Aras de Alpuenta, Valencia Province, Spain and Greek, sauros, "lizard."

Species: giganteus CASANOVAS, SANTAFE, & SANZE, 2001
Etymology: Latin, giganteus, "like that of Giants."

Holotype: MCNV

Locality: La Canada, Barranco de Escaiz, Losilla, Aras de Alpuenta, Valencia Province, Spain.

Horizon:

Biostratigraphy:

Age: Tithonian Stage, Upper Malm Epoch, Late Jurassic - Berriasian Stage, Lower Neocomian Subepoch, Lower Early Cretaceous Epoch, Lower Early Cretaceous.

Material: Cranial fragment, several vertebral fragments, a complete cervical, dorsal. sacral and caudal vertebrae, humerus, ulna, radius, metacarpal, sternal plates, ilium, ischium and pubis.

Paratype:

MCNV: 2 anterior caudal vertebrae.