(Yunguisaurus_liae,(Pistosaurus_postcranium,(Augustasaurus_hagdorni,(Bobosaurus_forojuliensis,(Eopleiosaurus_antiquior,(((Stratesaurus_taylori,(Anningasaura_lymense,(Avalonnectes_arturi,(Rhomaleosaurus_megacephalus,(Archaeonectrus_rostratus,(Meyerasaurus_victor,((Maresaurus_coccai,Borealonectes_russelli),(Rhomaleosaurus_thorntoni,(Rhomaleosaurus_cramptoni,Rhomaleosaurus_zetlandicus))))))))),(Plesiosaurus_dolichodeirus,(Westphaliasaurus_simonsensii,((Eretmosaurus_rugosus,(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_megadeirus,Colymbosaurus_svalbardensis,PMO_222_dot_663),(Djupedallia_engeri,(Spitrasaurus_spp,Abyssosaurus_nataliae))))),((((Nichollssaura_borealis,(Umoonasaurus_demoscyllus,(Leptocleidus_capensis,Leptocleidus_superstes))),(MIWG_1997_302,(Cimoliasaurus_valdensis,Brancasaurus_brancai))),(Edgarosaurus_muddi,(Plesiopleurodon_wellesi,QM_F51291_dot_2))),(GWWU_A3_B2,(Speeton_Clay_plesiosaurian,((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,((Liopleurodon_rossicus,(Pliosaurus_BRSMG_Cc332,(Pliosaurus_brachydeirus,Gallardosaurus_iturraldei))),(Brachauchenius_eulerti,Brachauchenius_lucasi,QM_F51291,(Kronosaurus_MCZ_1285,Brachauchenius_MNA_V9433)))))))))))))))));