Otionellidae

Otionellidae is a family of bryozoans belonging to the order Cheilostomatida.

Genera:
 * Helixotionella Cook & Chimonides, 1984
 * Kausiaria Bock & Cook, 1998
 * Otiochmella Zágoršek, 2003
 * Otionella Canu & Bassler, 1917
 * Otionellina Bock & Cook, 1998
 * Petasosella Bock & Cook, 1998