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