(Yunguisaurus,(Pistosaurus_postcranium,(Pistosaurus_skull,(Augustasaurus,(Bobosaurus,(NHMUK_49202,((Stratesaurus,(Macroplata,(Avalonnectes,(Eurycleidus,(Meyerasaurus,(Maresaurus,(R_megacephalus,(Archaeonectrus,(R_cramptoni,(R_zetlandicus,R_thorntoni)))))))))),((Thalassiodracon,((H_zanoni,(H_longirostris,H_tomistomimus)),(Attenborosaurus,Peloneustes))),(Eoplesiosaurus,(Plesiosaurus,(((Eretmosaurus,Westphaliasaurus),(Seelyosaurus,(M_tournemirensis,(M_brachypterygius,M_homalospondylus)))),(Plesiospterys,Cryptoclidus))))))))))));