(Temnodontosaurus,(Ichthyosaurus_communis,(Stenopterygius_quadriscissus,(Stenopterygius_cayi,((Arthropterygius_chrisorum,(Mollesaurus_periallus,(Leninia_stellans,((Ophthalmosaurus_icenicus,(Acamptonectes_densus,Ophthalmosaurus_natans)),(Cryopterygius_kristiansenae,(Undorosaurus_gorodischensis,(Paraophthalmosaurus_kabanovi,Paraophthalmosaurus_saveljeviensis))))))),(((Maiaspondylus_lindoei,(Aegirosaurus_leptospondylus,(Brachypterygius_extremus,Sveltonectes_insolitus))),(Caypullisaurus_bonapartei,(Platypterygius_hercynicus,(Platypterygius_australis,Athabascasaurus_bitumineus)))),(Grendelius_mordax,(Grendelius_pseudoscythicus,(Grendelius_alekseevi,Grendelius_zhuravlevi)))))))));