Alphabetical Listing of Families within this Taxa Group:
family     Atollidae T4007810
family     Atorellidae T4072304
family     Coronatae incertae sedis T4072798
family     Linuchidae T4032535
family     Nausithoidae T4007811
family     Paraphyllinidae T4072305
family     Periphyllidae T4003370