Alphabetical Listing of Families within this Taxa Group:

family     Ophiacanthidae		T4032521
family     Ophiacanthida incertae sedis		T4023745
family     Ophiobyrsidae		T4023735
family     Ophiocamacidae		T4023740
family     Ophiocomidae		T4023456
family     Ophiodermatidae		T4023439
family     Ophiomyxidae		T4023446
family     Ophiopezidae		T4023744
family     Ophiopteridae		T4023742
family     Ophiotomidae		T4023741