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