Westphaliasaurus Genus Author Classification Sauropterygia Eosauropterygia Eusauropterygia Pistosauroidea Pistosauria Plesiosauria Plesiosauroidea Microcleididae Westphaliasaurus Age Location Type species Other species Referred material Under construction Skeleton of Westphaliasaurus. The central slab of the skeleton was awaiting preparation at the time of this photograph, but was subsequently prepared. From Schwermann & Sander (2011).