(Yunguisaurus_liae,(Pistosaurus_postcranium,Pistosaurus_skull,Augustasaurus_hagdorni,Bobosaurus_forojuliensis,Stratesaurus_taylori,Eopleiosaurus_antiquior,(Macroplata_tenuiceps,Anningasaura_lymense,Avalonnectes_arturi,Eurycleidus_arcuatus,Meyerasaurus_victor,Rhomaleosaurus_megacephalus,Archaeonectrus_rostratus,(Maresaurus_coccai,Borealonectes_russelli),(Rhomaleosaurus_thorntoni,(Rhomaleosaurus_cramptoni,Rhomaleosaurus_zetlandicus))),(Thalassiodracon_hawkinsii,((Hauffiosaurus_longirostris,Hauffiosaurus_tomistomimus,Hauffiosaurus_zanoni),(Attenborosaurus_conybeari,(Marmornectes_candrewi,(Peloneustes_philarchus,(Pliosaurus_andrewsi,(Simolestes_vorax,(Liopleurodon_ferox,(Pliosaurus_funkei,Pliosaurus_BRSMG_Cc332,Pliosaurus_brachydeirus,Gallardosaurus_iturraldei,Liopleurodon_rossicus,Pliosaurus_irgisensis,Kronosaurus_MCZ_1285,Brachauchenius_eulerti,Brachauchenius_lucasi,Brachauchenius_MNA_V9433,QM_F51291))))))))),(Plesiosaurus_dolichodeirus,(Eretmosaurus_rugosus,Westphaliasaurus_simonsensii,(Seelyosaurus_guilelmiimperatoris,(Microcleidus_tournemirensis,(Microcleidus_brachypterygius,Microcleidus_homalospondylus))),(Plesiopterys_wildi,((((Cryptoclidus_eurymerus,(Kimmerosaurus_langhami,Tatenectes_laramiensis)),(Tricleidus_seeleyi,(Muraenosaurus_leedsii,Picrocleidus_beloclis))),((Pantosaurus_striatus,Plesiosaurus_mansellii),(Djupedallia_engeri,Spitrasaurus_spp,(Colymbosaurus_trochanterius,Abyssosaurus_nataliae)))),((((Umoonasaurus_demoscyllus,Nichollssaura_borealis,(Leptocleidus_capensis,Leptocleidus_superstes)),(MIWG_1997_302,(Cimoliasaurus_valdensis,Brancasaurus_brancai))),(Edgarosaurus_muddi,(Plesiopleurodon_wellesi,QM_F18041))),(GWWU_A3_B2,Speeton_Clay_plesiosaurian,Eromangasaurus_australis,((Wapuskanectes_betsynichollsae,Callawayasaurus_colombiensis),((Futabasaurus_suzukii,(Kaiwhekea_katiki,Aristonectes_parvidens)),(Libonectes_morgani,Hydrotherosaurus_alexandrae)))))))))));