Alphabetical Listing of Families within this Taxa Group:

family     Byrsophlebidae		T4032530
family     Dalyelliidae		T4026906
family     Diceratocephalidae		T4031372
family     Graffillidae		T4072343
family     Kytorhynchidae		T4072382
family     Luridae		T4072686
family     Promesostomidae		T4026909
family     Provorticidae		T4032527
family     Pterastericolidae		T4072344
family     Solenopharyngidae		T4072355
family     Temnocephalidae		T4031373
family     Trigonostomidae		T4026910
family     Typhloplanidae		T4072356
family     Umagillidae		T4026907