Arachnidiidae

Arachnidiidae is a family of bryozoans belonging to the order Ctenostomatida.

Genera:
 * Arachnidia Hincks, 1859
 * Arachnidium Hincks, 1859
 * Arachnoidea Moore, 1903
 * Arachnoidella d'Hondt, 1983
 * Arachnoidia Moore, 1903
 * Cardoarachnidium Taylor, 1990
 * Cryptoarachnidium Jebram, 1973
 * Parachnoidea d'Hondt, 1979
 * Pierrella Wilson & Taylor, 2012