(Yunguisaurus_liae,(Pistosaurus_postcranium,(Augustasaurus_hagdorni,(Bobosaurus_forojuliensis,(Pistosaurus_skull,((Anningasaura_lymense,(Macroplata_tenuiceps,(Avalonnectes_arturi,((Eurycleidus_arcuatus,Rhomaleosaurus_megacephalus),(Archaeonectrus_rostratus,((Meyerasaurus_victor,((Rhomaleosaurus_cramptoni,Rhomaleosaurus_zetlandicus),(Rhomaleosaurus_thorntoni,Thaumatodracon))),(Maresaurus_coccai,Borealonectes_russelli))))))),(((Stratesaurus_taylori,Eopleiosaurus_antiquior),(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)))),((((Nichollssaura_borealis,(Umoonasaurus_demoscyllus,(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))))))))))))),(Thalassiodracon_hawkinsii,((Hauffiosaurus_longirostris,(Hauffiosaurus_tomistomimus,Hauffiosaurus_zanoni)),(Attenborosaurus_conybeari,(Marmornectes_candrewi,(Peloneustes_philarchus,(Pliosaurus_andrewsi,(Simolestes_vorax,(Liopleurodon_ferox,(Pliosaurus_irgisensis,((Pliosaurus_funkei,(Liopleurodon_rossicus,(Pliosaurus_BRSMG_Cc332,(Pliosaurus_brachydeirus,Gallardosaurus_iturraldei)))),(Brachauchenius_eulerti,(Brachauchenius_lucasi,(Brachauchenius_MNA_V9433,(Kronosaurus_MCZ_1285,QM_F51291)))))))))))))))))))));