ProtogrammocerasHildaitesTauromenicerasBouleiceras_nitescensBouleiceras_arabicumNejda_bramkampiNejdia_pseudogruneriLeukadiella_helenicaLeukadiella_ionicaRenziceras_nausikaaeFrechiella_subcarinataParoniceras_sternaleParoniceras_helveticumO_Oxyparoniceras_bumckmaniO_Oxyparoniceras_telemachiO_Neoparoniceras_undulosumKohaticeras_razaiOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Rulleau_etal_2003a