(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,(Eretmosaurus_rugosus,(Westphaliasaurus_simonsensii,((Seelyosaurus_guilelmiimperatori,(Microcleidus_tournemirensis,(Microcleidus_brachypterygius,Microcleidus_homalospondylus))),(Plesiopterys_wildi,(((((Cryptoclidus_eurymerus,(Kimmerosaurus_langhami,Tatenectes_laramiensis)),(Djupedallia_engeri,(Spitrasaurus_spp,PMO_224_dot_248))),(Tricleidus_seeleyi,(Muraenosaurus_leedsii,Picrocleidus_beloclis))),((Pantosaurus_striatus,Plesiosaurus_mansellii),(Abyssosaurus_nataliae,(Colymbosaurus_megadeirus,Colymbosaurus_svalbardensis)))),((((Umoonasaurus_demoscyllus,(Nichollssaura_borealis,(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_tomistomimus,(Hauffiosaurus_longirostris,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,((Kronosaurus_MCZ_1285,QM_F51291),(Brachauchenius_lucasi,Brachauchenius_MNA_V9433))))))))))))))))));