BrechitesClavagellaCleidothaeridaeCuspidariidaeLaternulidaeLyonsiellidaeLyonsiidaeMyadoraMyochamaPandoridaeParilimyidaePeriplomatidaePholadomyidaePoromyidaeThraciidaeVerticordiidaeOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Harper_etal_2000a