Hemipneustidae

Hemipneustidae is an extinct family of sea urchins.

Genera

 * Hemipneustes L. Agassiz, 1835 †
 * Medjesia Jeffery, 1997 †
 * Opisopneustes Gauthier, 1889 †
 * Plesiohemipneustes Smith & Wright, 2003 †
 * Toxopatagus Pomel, 1883 †