(Yunguisaurus,(Pistosaurus_skull,(Augustasaurus_hagdorni,(((Bobosaurus,Plesiosaurus_macrocephal),(((((Polycotylus_latipinnis,(((Nichollsaura_borealis,(Vectocleidus_pastorum,Brancasaurus_brancai,Leptocleidus_capensis,Leptocleidus_superstes,Umoonasaurus_demoscyllus)),(Edgarosaurus_muddi,(((Trinacromerum_bentonianu,(Manemergus_anguirostris,(Dolichorhynchops_hersche,(Dolichorhynchops_osborni,Palmulasaurus_quadratus)))),(Eopolycotylus_rankini,Thililua_longicollis)),(Plesiopleurodon_wellesi,QMF_18041)))),((Cryptoclidus_eurymerus,Kimmerosaurus_langhami),(Muraenosaurus_leedsii,Tricleidus_seeleyi)))),(Callawayasaurus_colombie,(Thalassomedon_haningtoni,((Elasmosaurus_platyurus,(Libonectes_morgani,(Eromangasaurus_australis,(Aristonectes_parvidens,Kaiwheke_akatiki)))),(Styxosaurus_snowii,(Hydrotherosaurus_alexand,Terminonatator_pontiexen)))))),(Microcleidus_homalospond,(Hydrorion_brachypterygiu,Occitanosaurus_tournemir))),(Seeleyosaurus_guilelmiim,(OUMNH_J_dot_28585,Plesiosaurus_dolichodeir))),((Thalassiodracon_hawkinsi,((Attenborosaurus_conybear,((Hastanectes_valdensis,(Pliosaurus_andrewsi,((Simolestes_vorax,(Liopleurodon_ferox,((FHSM_VP321,(Brachauchenius_lucasi,Kronosaurus_queenslandic)),(Pliosaurus_brachydeirus,Pliosaurus_brachyspondyl)))),(OUMNH_J_dot_02247,Peloneustes_philarchus)))),(Marmornectes,BMNH_R2439))),(Hauffiosaurus_longirostris,(Hauffiosaurus_tomistomimus,Hauffiosaurus_zanoni)))),(OUMNH_J_dot_10337,((BMNH_49202,(Archaeonectrus_rostratus,Macroplata_tenuiceps)),((Eurycleidus_arcuatus,Rhomaleosaurus_megacepha),(Rhomaleosaurus_zetlandic,(Maresaurus_coccai,Rhomaleosaurus_victor)))))))),(Pistosaurus_postcra,(Cymatosaurus,Simosaurus_gaillardoti))))));