- Colletonema subcohaerens Thwaites, 1848 accepted as Schizonema subcohaerens Thwaites, 1848
- Delphineis surirella (Ehrenberg) G.W.Andrews, 1981 † accepted as Zygoceros surirella Ehrenberg, 1840
- Exilaria flabellata Ehrenberg, 1832 (uncertain > unassessed)
- Psammodiscus nitidus (W.Gregory) Round & D.G.Mann, 1980 accepted as Coscinodiscus nitidus f. nitidus Gregory, 1857
- Rhaphoneis amphiceros (Ehrenberg) Ehrenberg, 1844
- Syndendrium diadema Ehrenberg, 1854 † (uncertain > unassessed)
- Zygoceros surirella Ehrenberg, 1840 (uncertain > unassessed)