Tetrastemmatidae
Tetrastemmatidae is a family of worms belonging to the order Monostilifera.
Genera
Genera:Africanemertes Stiasny-Wijnhoff, 1942Albanemertes Senz, 1993Algonemertes Corrêa, 1954Ammonemertes Gibson, 1990Amphinemertes Coe, 1940Annulonemertes Berg, 1985Areonemertes Friedrich, 1933Asteronemertes Chernyshev, 1991Austroprostma Stiasny-Wijnhoff, 1942Coenemertes Corrêa, 1954Cyanophthalma Norenburg, 1986Dichonemertes Coe, 1938Digononemertes Gibson, 1990Divanella Gibson, 1974Itanemertes Corrêa, 1954Koinoporus Sánchez and Moretto, 1998Meionemertes Gibson, 1986Minutanemertes Senz, 1993Nareda Girard, 1854Nemertellina Friedrich, 1935Nemertellopsis Friedrich, 1935Paraminutanemertes Senz, 1993Paroerstediella Chernyshev, 1991Prostomatella Friedrich, 1935Prostomiopsis Friedrich, 1936Pseudocarcinonemertes Fleming & Gibson, 1981Quoyianemertes Senz, 2001Tetrastemma Ehrenberg, 1831Verillianemertes Senz, 2001