miRNA families that are unique for Echinoida:

miR-4145	miR-1658	miR-1334	miR-4006a	miR-2180
miR-2886	miR-2399	mir-933	miR-3664	miR-4339
miR-694	miR-2693	miR-1342	miR-2500	mir-982
mir-19