PlesiosaurusMuraenosaurusCryptoclidusTricleidusKimmerosaurusEdgarosaurusPolycotylusDolichorhynchopsTrinacromerumBrancasaurusTatenectesThalassiodraconKaiwhekea_katikiCallawayasaurus_columbiensisMauisaurus_haastiAristonectes_spFutabasaurus_suzukiiMicrocleidus_tournemirensisSGO_PV_260Styxosaurus_snowiiThalassomedon_haningtoniTuarangisaurus_keyesiOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Otero_etal_2012a