Arachnoididae

Arachnoididae is a family of echinoderms of the order Clypeasteroida.

Genera

 * Ammotrophus H. L. Clark, 1928
 * Arachnoides Leske, 1778
 * Fellaster Durham, 1955
 * Fossulaster Lambert & Thiery, 1925
 * Monostychia Laube, 1869
 * Philipaster Wang, 1994
 * Prowillungaster Wang, 1994
 * Scutellinoides Durham, 1955
 * Willungaster Philip & Foster, 1971