Named By: Fritsch - 1894.
Classification: Chordata, Reptilia, Sauropterygia, Pistosauroidea.
Species: C. fridericianus (type).
Known locations: Germany.
Time period: Olenekian to the Anisian of the Triassic.
Fossil representation: At least two individuals.
Cymatosaurus is usually seen to be a member of the Pistosauridea. This group of marine reptiles were the forerunners of the plesiosaurs which seem to have evolved from later more advanced pistosauroid forms. Other members of this group include Augustasaurus and Pistosaurus, but Cymatosaurus probably also shared the ocean with placodonts like Placodus, icthyosaurs like Cymbospondylus and Mixosaurus, nothosaurs like Nothosaurus and sharks like Hybodus.