(Archaeonectrus_rostratus,(Macroplatatenuiceps,(((Rhomaleosaurusmegacepha,(((OUMNH_J_dot_10337,(Thalassiodraconhawkinsi,(Plesiosaurusdolichodeir,((Seeleyosaurusguilelmiim,((Aristonectesparvidens,Colymbosaurus_svalbardensis,Djupedalia_engeri,Eromangasaurusaustralis,Spitrasaurus_larseni,Spitrasaurus_wensaasi,(Styxosaurussnowii,(Thalassomedonhaningtoni,(Callawayasauruscolombie,((Elasmosaurus_platyurus,Libonectesmorgani),(Hydrotherosaurusalexand,Terminonatatorpontiexen))))),(Muraenosaurusleedsii,(Tricleidusseeleyi,(Cryptocliduseurymerus,Kimmerosauruslanghami)))),(Hydrorionbrachypterygiu,Occitanosaurustournemir))),(Microcleidushomalospond,OUMNH_J_dot_28585))))),(Attenborosaurusconybear,(BMNH_49202,(Augustasaurushagdorni,(Cymatosaurus,Simosaurusgaillardoti))))),(Eurycleidusarcuatus,Maresauruscoccai,Rhomaleosaurusvictor,Rhomaleosauruszetlandic))),(Plesiosaurusmacrocephal,(((BEDFM_1999_slash_201,(Pliosaurusandrewsi,(OUMNH_J_dot_02247,Peloneustesphilarchus))),(Simolestesvorax,(BMNH_R2439,FHSMVP321,Liopleurodonferox,Pliosaurus_brachydeirus,Pliosaurus_brachyspondylus,Pliosaurus_funkei,Pliosaurus_macromerus,Pliosaurus_rossicus,Pliosaurus_sp_BRSMG_Cc332,(Brachaucheniuslucasi,Kronosaurusqueenslandic)))),((Umoonasaurusdemoscyllus,(Brancasaurusbrancai,Kaiwhekeakatiki),(Leptocleiduscapensis,Leptocleidussuperstes)),(Dolichorhynchopsosborni,Edgarosaurusmuddi,Manemergusanguirostris,Nichollsauraborealis,Palmulasaurusquadratus,Plesiopleurodonwellesi,Polycotyluslatipinnis,QMF_18041,Thililualongicollis,Trinacromerumbentonianu,(Dolichorhynchopshersche,Eopolycotylusrankini)))))),(Hauffiosauruslongirostris,(Hauffiosaurustomistomimus,Hauffiosauruszanoni)))));