Cleidochasmatidae
Cleidochasmatidae is a family of bryozoans belonging to the order Cheilostomatida.
Genera:Anchicleidochasma Soule, Soule & Chaney, 1991Calyptooecia Winston, 1984Characodoma Maplestone, 1900Cleidochasmidra Ünsal & d'Hondt, 1979Fedorella Silén, 1947Gemelliporina Bassler, 1936Yrbozoon Gordon, 1989