Alphabetical Listing of Families within this Taxa Group:

family     Aeropsidae		T4023400
family     Apatopygidae		T4023557
family     Astriclypeidae		T4023500
family     Brissidae		T4009661
family     Calymnidae		T4023355
family     Cassidulidae		T4023502
family     Clypeasteridae		T4023484
family     Echinarachniidae		T4023462
family     Echinolampadidae		T4023503
family     Echinoneidae		T4023498
family     Eurypatagidae		T4023642
family     Fibulariidae		T4015800
family     Gitolampadids		T4023668
family     Hemiasteridae		T4023405
family     Laganidae		T4023485
family     Loveniidae		T4015835
family     Macropneustidae		T4023650
family     Maretiidae		T4023651
family     Mellitidae		T4023463
family     Micrasteridae		T4023652
family     Neolampadidae		T4023348
family     Palaeostomatidae		T4023657
family     Palaeotropidae		T4023658
family     Paleopneustidae		T4023660
family     Paleopneustina incertae sedis A		T4023661
family     Paleopneustina incertae sedis B		T4023662
family     Pericosmidae		T4023501
family     Plexechinidae		T4023356
family     Pourtalesiidae		T4023358
family     Prenasteridae		T4023663
family     Rotulidae		T4023628
family     Schizasteridae		T4023412
family     Scutellidae		T4023486
family     Spatangidae		T4015802
family     Taiwanasteridae		T4023665
family     Urechinidae		T4023359