Palaeostomatidae

Palaeostomatidae is a family of echinoderms belonging to the order Spatangoida.

Genera:
 * †Ditremaster Munier-Chalmas, 1885
 * Palaeostoma Lovén in A. Agassiz, 1872
 * Sarsiaster Mortensen, 1950
 * †Trachyaster Pomel, 1869