Alphabetical Listing of Families within this Taxa Group:

family     Artostrobiidae		T2006519
family     Cannobotryidae		T2004078
family     Carpocaniidae		T2006517
family     Collozoidae		T2006515
family     Plagiacanthidae		T2006516
family     Pterocorythidae		T2006518
family     Theoperidae		T2004105
family     Trissocyclidae		T2004061