• Petalomonas abcissa (Dujardin) Stein, 1878
• Petalomonas abcissa var. pellucida Skuja, 1948
• Petalomonas abscissa (Dujardin) F.Stein, 1859 (unaccepted)
• Petalomonas abscissa f. parallela G.A.Klebs, 1892
• Petalomonas abscissa var. pellucida Skuja, 1948
• Petalomonas abscissa var. suborbicularis Z.X.Shi, 1999
• Petalomonas africana Bourrelly, 1961
• Petalomonas alata (A.C.Stokes) A.C.Stokes, 1888
• Petalomonas angusta (Klebs) Lemmermann, 1910
• Petalomonas angusta var. pusilla (Klebs) Lemmermann, 1910
• Petalomonas applanata Skuja, 1939
• Petalomonas bicarinata Shawhan & Jahn, 1947
• Petalomonas calycimonadoides Christen, 1962
• Petalomonas calycimonoides W.J.Lee & D.J.Patterson, 2000
• Petalomonas cantuscygni J.Cann & N.Pennick, 1986
• Petalomonas carinata A.C.Stokes, 1885
• Petalomonas carinata Francé, 1894 (uncertain)
• Petalomonas christenii W.J.Lee & D.J.Patterson, 2000
• Petalomonas conchata Christen, 1962
• Petalomonas curvata Skuja, 1948
• Petalomonas dentata Christen, 1962
• Petalomonas disomata Stokes, 1884 accepted as
• Petalomonas dorsalis Stokes, 1887
• Petalomonas excavata Skuja, 1939
• Petalomonas gibbera Christen, 1962
• Petalomonas gigas Skuja, 1939
• Petalomonas hovassi Mignot, 1967 (uncertain)
• Petalomonas hyalina Christen, 1962
• Petalomonas inflexa G.A.Klebs, 1892
• Petalomonas inflexa var. obliqua Klebs, 1892
• Petalomonas intorta W.J.Lee & D.J.Patterson, 2000
• Petalomonas involuta Skuja, 1939
• Petalomonas irregularis Skuja, 1948
• Petalomonas iugosa W.J.Lee & D.J.Patterson, 2000
• Petalomonas klebsii Christen, 1962
• Petalomonas klinostoma Skuja, 1948
• Petalomonas labrum W.J.Lee & D.J.Patterson, 2000
• Petalomonas lata Christen, 1962
• Petalomonas mediocanellata F.Stein, 1878
• Petalomonas mediocanellata var. angusta Klebs, 1893 accepted as Petalomonas angusta (Klebs) Lemmermann, 1910
• Petalomonas mediocanellata var. pleurosigma (Stokes) Lemmermann, 1910
• Petalomonas mediocanellata var. pusilla Klebs, 1893 accepted as Petalomonas angusta var. pusilla (Klebs) Lemmermann, 1910
• Petalomonas messikommeri Christen, 1962
• Petalomonas micra R.E.Norris, 1964
• Petalomonas minuta Hollande, 1942
• Petalomonas minutula Christen, 1962
• Petalomonas mira Awerinzew, 1900
• Petalomonas mira var. appendiculata Skuja, 1939
• Petalomonas mira var. bicarinata Skuja, 1939
• Petalomonas ovum Matvienko, 1938
• Petalomonas paludosa Christen, 1962
• Petalomonas pentacarinata Péterfi, 1965
• Petalomonas phacoides Skuja, 1931
• Petalomonas physaloides (Christen) W.J.Lee & D.J.Patterson, 2000 (uncertain)
• Petalomonas plana W.J.Lee & D.J.Patterson, 2000
• Petalomonas platyrhyncha Skuja, 1948
• Petalomonas pleurosigma Stokes, 1887 accepted as Petalomonas mediocanellata var. pleurosigma (Stokes) Lemmermann, 1910
• Petalomonas pluteus Christen, 1962
• Petalomonas polytaphrena Skuja, 1964 accepted as Petalomonas sphagnophila Christen, 1962
• Petalomonas poosilla Larsen & Patterson, 1990 accepted as Petalomonas pusilla Skuja, 1948
• Petalomonas praegnans Skuja, 1948
• Petalomonas pringsheimii Christen, 1962
• Petalomonas prototheca Skuja, 1948
• Petalomonas punctato-striata Skuja, 1939
• Petalomonas pusilla Skuja, 1948
• Petalomonas quadrilineata Penard, 1890
• Petalomonas quinquemarginata Shawhan & Jahn, 1947
• Petalomonas robusta Christen, 1962
• Petalomonas septemcarinata Shawhan & Jahn, 1947
• Petalomonas sexlobata Klebs, 1892
• Petalomonas simplex Christen, 1962
• Petalomonas sinuata F.Stein, 1878
• Petalomonas sphagnicola Tschermak-Woess, 1950
• Petalomonas sphagnophila Christen, 1962
• Petalomonas spinifera (Lackey) W.J.Lee & D.J.Patterson, 2000
• Petalomonas splendens Hollande, 1942
• Petalomonas steinii Klebs, 1892
• Petalomonas steinii f. lata G.A.Klebs, 1892 accepted as Petalomonas steinii var. lata (G.A.Klebs) Lemmermann, 1910
• Petalomonas steinii var. carinata (A.C.Stokes) Lemmermann, 1910 (uncertain)
• Petalomonas steinii var. lata (G.A.Klebs) Lemmermann, 1910
• Petalomonas sulcata A.C.Stokes, 1887
• Petalomonas tenuis Christen, 1962
• Petalomonas triangula Z.X.Shi, 1999
• Petalomonas tricarinata Skuja, 1939
• Petalomonas variabilis Christen, 1962
• Petalomonas ventritracta Skuja, 1939
• Petalomonas virgata W.J.Lee & D.J.Patterson, 2000
• Petalomonas vulgaris Skuja, 1948
• Petalomonas wuhanica Z.Shi, 1986
• Sphenomonas angusta Skuja, 1956
• Sphenomonas australis Playfair, 1921
• Sphenomonas australis var. elliptica Playfair
• Sphenomonas australis var. rhomboidea Playfair
• Sphenomonas decemlineata Seckt, 1921
• Sphenomonas elongata Lackey, 1962
• Sphenomonas excavata Playfair, 1921
• Sphenomonas laevis Skuja, 1948
• Sphenomonas minor Tschernow, 1950
• Sphenomonas mirabilis Playfair, 1921
• Sphenomonas quadrangularis F.Stein, 1878