Oceanotitan

Oceanotitan (meaning "ocean giant") is a genus of sauropod dinosaur known from the Upper Jurassic (latest Kimmeridgian stage, about 149 million years ago) Lourinhã 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.

== Discovery and naming == The holotype and only specimen of Oceanotitan, SHN 181, is stored at the Sociedade de História Natural, in Torres Vedras, Portugal. It was discovered at the coastal cliffs of Praia de Valmitão in Lourinhã, by a private collector who donated his collection to the municipality of Torres Vedras. The rocks that it was found in correspond to the Praia da Amoreira-Porto Novo Member of the Lourinha Formation, dating to the latest Kimmeridgian stage of the Late Jurassic, about 149 Ma. Its type locality is just a few meters north of where the holotype of Lusovenator was collected.