Diplotheca
Didymoeca
Biota | Protozoa | Sarcomastigota | Choanozoa | Choanofila | Choanoflagellatea | Acanthoecida | Stephanoecidae | Didymoeca
| Owen, 1858 |  | Cavalier-Smith, 1981 | Cavalier-Smith, 2009 | Cavalier-Smith, 1998 |  | Leadbeater, 2011 | Doweld, 2003