Planktonemertidae

Planktonemertidae is a family of worms belonging to the order Polystilifera.

Genera:
 * Crassonemertes Brinkmann, 1917
 * Mergonemertes Brinkmann, 1917
 * Mononemertes Coe, 1926
 * Neuronemertes Coe, 1926
 * Planktonemertes Woodworth, 1899
 * Plenanemertes Coe, 1954
 * Tononemertes Coe, 1954