Hypothetical_AncestorCarcinoplaxCarinocarcinoidesPsopheticusCamatopsisChasmocarcinusEucrateEuryplaxHeteroplaxGoneplaxOmmatocarcinusTrogloplaxBeurisiaIntesiusMathildellaPseudoziusEpixanthusPilumnusOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Karasawa_et_Kato_2003a