(Temnodontosaurus_spp,(Ichthyosaurus_communis,(Hauffiopteryx_typicus,(Stenopterygius_quadriscissus,(Chacaicosaurus_cayi,(Stenopterygius_aaleniensis,(((Acamptonectes_densus,(Ophthalmosaurus_icenicus,(Ophthalmosaurus_natans,Mollesaurus_periallus))),((Sveltonectes_insolitus,(Aegirosaurus_leptospondylus,(((Athabascasaurus_bitumineus,(Platypterygius_platydactylus,((Maiaspondylus_lindoei,(Leninia_stellans,Plutoniosaurus_bedengensis)),((Platypterygius_australis,Platypterygius_americanus),(Platypterygius_hercynicus,Sisteronia_seeleyi))))),(Undorosaurus_nessovi,(Undorosaurus_gorodischensis_upm,Undorosaurus_gorodischensis_pmo))),(Grendelius_alekseevi,(Grendelius_mordax,Caypullisaurus_bonapartei))))),(Janusaurus_lundi,(Palvennia_hoybergeti,(Arthropterygius_chrisorum,Keilhauia_nui))))),(Gengasaurus_nicosiai,(Nannopterygius_enthekiodon,Parophth_saveljeviensis)))))))));