(Cymatosaurus,(Pistosaurus,(Augustasaurus,(((Attenborosaurus,((Archaeonectrus,(BMNH_49202,(Macroplata,(WARMS_G10875,((NIMING_F8749,(NMING_F10194,(Eurycleidus,LEICS_G221_1851))),(Rhomaleosaurus_megacephalus,(Maresaurus,(Rhomaleosaurus_victor,(Thaumatodracon,(Rhomaleosaurus_zetlandicus,(Sthenarosaurus,(Rhomaleosaurus_propinquus,(Rhomaleosaurus_cramptoni,Rhomaleosaurus_thorntoni))))))))))))),(Hauffiosaurus,Plesiosaurus_longirostris))),(Yunguisaurus,(Thalassiodracon,(Plesiosaurus_dolichodeirus,(Hydrorion,Seeleysaurus))))),(OUMJ28585,((Simolestes,(Liopleurodon,((Brachauchenius,Kronosaurus),(Peloneustes,Pliosaurus)))),(Leptocleidus_capensis,(Leptocleidus_superstes,((Dolichorhynchops,TMP_94_122_01),(Leptocleidus_clemai,Umoonasaurus))))))))));