(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),(Djupedalia_engeri,(Spitrasaurus_spp,(Colymbosaurus_trochanterius,Abyssosaurus_nataliae)))))),((Brancasaurus_brancai,(MIWG,((Nichollssaura_borealis,(Umoonasaurus_demoscyllus,(Leptocleidus_capensis,Leptocleidus_superstes))),((Cimoliasaurus_valdensis,(Pahasapasaurus_haasi,((Eopolycotylus_rankini,((Plesiopleurodon_wellesi_1,Richmond_pliosaur),(QM_F18041,Manemergus_anguirostris))),(Dolichorhynchops_tropicensis,(Polycotylus_latipinnis,(Plesiopleurodon_wellesi_2,(Trinacromerum_bentonianum,(Georgiasaurus_penzensis,(Dolichorhynchops_bonneri,(Dolichorhynchops_osborni,(Dolichorhynchops_ROM,Dolichorhynchops_herschelensis))))))))))),(Edgarosaurus_muddi,Palmulasaurus_quadratus))))),(GWWU_A3_B2,(Speeton_Clay_plesiosaurian,(Wapuskanectes_betsynichollsae,(((Futabasaurus_suzukii,Hydrotherosaurus_alexandrae),(Libonectes_morgani,(((CM_Zfr_115,(Alexandronectes_zealandiensis,(Kaiwhekea_katiki,(Morturneria_seymourensis,(Aristonectes_quiriquinensis,Aristonectes_parvidens))))),(Terminonatator_pointeixensis,((AMNH_1495,(AMNH_5835,Styxosaurus_snowii)),(Albertonectes_vanderveldei,Elasmosaurus_platyurus)))),(Tuarangisaurus_keyesi,Thalassomedon_haningtoni)))),(Callawayasaurus_colombiensis,Eromangasaurus_carinognathus)))))))))))))),(Thalassiodracon_hawkinsii,((Hauffiosaurus_tomistomimus,(Hauffiosaurus_longirostris,Hauffiosaurus_zanoni)),(Attenborosaurus_conybeari,(Marmornectes_candrewi,(Peloneustes_philarchus,(Pliosaurus_andrewsi,(Simolestes_vorax,(Liopleurodon_ferox,((Liopleurodon_rossicus,(Pliosaurus_irgisensis,(Pliosaurus_BRSMG_Cc332,(Pliosaurus_funkei,(Pliosaurus_brachydeirus,Gallardosaurus_iturraldei))))),(Kronosaurus_MCZ_1285,(Brachauchenius_MNA_V9433,(Brachauchenius_lucasi,(Brachauchenius_eulerti,QM_F51291))))))))))))))))))));