Otionellidae
Otionellidae is a family of bryozoans belonging to the order Cheilostomatida.
Genera:Helixotionella Cook & Chimonides, 1984Kausiaria Bock & Cook, 1998Otiochmella Zágoršek, 2003Otionella Canu & Bassler, 1917Otionellina Bock & Cook, 1998Petasosella Bock & Cook, 1998