 In 2003, Upchurch & Martin rejected the identity.In addition to the thirteen species based on British material, three were named by French researchers.In 1874, Henri-Émile Sauvage named "Cetiosaurus rigauxi" based on a vertebra found by Edouard Edmond Joseph Rigaux at Le Portel, west of Boulogne-sur-Mer, in layers dating from the Tithonian.