• Porolithon Foslie, 1909
• Porolithon aequinoctiale Foslie, 1909
• Porolithon africanum (Foslie) Foslie, 1909 accepted as Sporolithon africanum (Foslie) J. Afonso-Carillo, 1986
• Porolithon antillarum (Foslie & M.A. Howe) Foslie & M.A. Howe, 1909
• Porolithon boergesenii (Foslie) M. Lemoine, 1917 accepted as Hydrolithon boergesenii (Foslie) Foslie, 1909
• Porolithon castellum E.Y. Dawson, 1960
• Porolithon coarctatum (Foslie) Foslie, 1909 accepted as Hydrolithon gardineri (Foslie) Verheij & Prud'homme van Reine, 1993
• Porolithon cocosicum Lemoine, 1930
• Porolithon colliculosum Masaki, 1968
• Porolithon conicum (E.Y. Dawson) M. Baba
• Porolithon craspedium (Foslie) Foslie, 1909
• Porolithon gardineri (Foslie) Foslie, 1909 accepted as Hydrolithon gardineri (Foslie) Verheij & Prud'homme van Reine, 1993
• Porolithon improcerum (Foslie & Howe) Lemoine, 1920
• Porolithon marshallensis W.R. Taylor, 1950
• Porolithon oligarpum (Foslie) Foslie
• Porolithon oligocarpum (Foslie) Foslie accepted as Hydrolithon oligocarpum (Foslie) Foslie
• Porolithon onkodes (Heydrich) Foslie, 1909 accepted as Hydrolithon onkodes (Heydrich) D. Penrose & Woelkerling, 1992
• Porolithon orbiculatum Masaki, 1968
• Porolithon pachydermum (Foslie) Foslie, 1909
• Porolithon praetextatum Foslie, 1909
• Porolithon reinboldii (Weber-van Bosse & Foslie) Lemoine, 1911 accepted as Hydrolithon reinboldii (Weber-van Bosse & Foslie) Foslie, 1909
• Porolithon somaliae Raineri, 1929 accepted as Hydrolithon somaliae (Raineri) P.C. Silva, 1966
• Porolithon sonorense E.Y. Dawson, 1944