Monostilifera

Monostilifera is a suborder of nemertean worms belonging to the class Hoplonemertea (formerly Enopla), a class of worms characterized by the presence of a peculiar armature of spines or plates in their proboscis.

Families

 * Acteonemertidae
 * Amphiporidae
 * Carcinonemertidae
 * Cratenemertidae
 * Prosorhochmidae
 * Tetrastemmatidae

Genus (unassigned family): Quasitetrastemma Chernyshev, 2004