Lissodiadema

Lissodiadema is the only genus in the family Lissodiadematidae.

{| class="wikitable" |- ! colspan="1"|Genus!!colspan="1"|Author genus !!colspan="1"|Species!!colspan="1"|Author species!!colspan="1"|Age |- ||Lissodiadema||Mortensen, 1903||L. lorioli||Mortensen, 1903||extant |- ||||||L. purpureum||Agassiz & Clark, 1907||extant |- |}