Alphabetical Listing of Families within this Taxa Group:
family     Amphilepididae T4023445
family     Amphilepidida incertae sedis T4023748
family     Amphilimnidae T4023747
family     Amphiuridae T4010010
family     Hemieuryalidae T4023512
family     Ophiactidae T4015803
family     Ophiolepididae T4023511
family     Ophionereididae T4023441
family     Ophiopholidae T4015828
family     Ophiopsilidae T4023736
family     Ophiothamnidae T4023750
family     Ophiotrichidae T4015804