DissacusPachyaenaSinonyxPakicetusAmbulocetusDalanistesRemingtoncetusRodhocetusGaviacetusEocetusBablacetusGeorgiacetusProtocetusBasilosaurusPontogeneusZygorhizaDorudonOdontocetiMysticetiOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Uhen_1999a