Xystostrophia_umbraculumXystostrophia_woolworthanaSchuchertella_lensSchuchertella_perchaFloweria_anomalaFloweria_arctostriataFloweria_becraftensisFloweria_chemungensisFloweria_cornucopiaFloweria_crassaFloweria_deformisFloweria_iowensisFloweria_lirellaFloweria_magnacicatrixFloweria_pandoraFloweria_perversaFloweria_pravaFloweria_transversalisOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Rode_2005ab