Type species: Rhombopora elegantula Ulrich, 1884
This genus includes the species:
| Nicklesopora acanthoporata | Stsherbatych, 1960 | Lower Carboniferous Serpukhovian | Russia |
| Nicklesopora augustiaperturata | Trizna, 1958 | Lower Carboniferous Tournaisian | Russia Kuznetz Basin |
| Nicklesopora avia | Gilmour, 2007 | Carboniferous Bashkirian | USA Nevada |
| Nicklesopora bigemina | Lu, 1983 | Carboniferous Visean | China |
| Nicklesopora callosa | Liu, 1980 | Carboniferous | China |
| Nicklesopora certa | Morozova, 1986 | Carboniferous | Russia |
| Nicklesopora crenulata | Ross, 1961 | Devonian Famennian | Australia |
| Nicklesopora cylindrica | Yang & Lu, 1980 | Permian Djulfian | China |
| Nicklesopora devonica | Lu, 1983 | Devonian | China |
| Nicklesopora diaphragmatica | (Schulga-Nesterenko, 1955) | Carboniferous Gzhelian | Russia |
| Nicklesopora elegantula | (Ulrich, 1884) | L.Mississippian | USA (Kentucky) |
| Nicklesopora elegantula | (Ulrich, 1884) | Carboniferous Visean | USA Kentucky |
| Nicklesopora elegantulaformis | (Nekhoroshev, 1956) | Carboniferous Serpukhovian | Russia? Altai |
| Nicklesopora exigua | Ulrich, 1890 | Carboniferous Tournaisian-Visean | USA, Kazakhstan, Japan |
| Nicklesopora fimbria | Liu, 1980 | Permian | China |
| Nicklesopora fitzroyensis | Ross, 1961 | Devonian Frasnian | Australia |
| Nicklesopora? flexuosa | (Chapman, 1920) | Silurian/Devonian | Australia |
| Nicklesopora geuriensis | Ross, 1961 | Devonian | Australia |
| Nicklesopora graciosa | Troizkaya, 1968 | Devonian Famennian | Kazakhstan |
| Nicklesopora hispida | Shcherbatykh, 1960 | Carboniferous Visean | Russia |
| Nicklesopora leopoldensis | Ross, 1961 | Devonian Frasnian | Australia |
| Nicklesopora longhuiensis | Yang, Hu & Xia, 1988 | Carboniferous Tournaisian | China |
| Nicklesopora maculata | Liu, 1980 | Permian | China |
| Nicklesopora orelensis | Kruchinina in Gorjunova & Kruchinina, 1975 | Carboniferous Kasimovian-Gzhelian | Russia |
| Nicklesopora persimilis | (Ulrich, 1884) | Carboniferous Visean-Namurian | USA |
| Nicklesopora renzettiae | Prezbindowski & Anstey, 1978 | Devonian Famennian | USA Montana |
| Nicklesopora riasanensis | (Schulga-Nesterenko, 1955) | Carboniferous Kasimovian | Russia |
| Nicklesopora sexagula | Troizkaya, 1968 | Devonian Famennian | Russia |
| Nicklesopora simulatrix | (Ulrich, 1890) | Carboniferous Visean | USA Illinois, Russia, Mongolia |
| Nicklesopora tabulata | (Ulrich, 1890) | Carboniferous Visean-Namurian | USA Illinois, China |
| Nicklesopora taidonensis | Trizna, 1958 | Carboniferous Tournaisian | Russia, Kazakhstan |
| Nicklesopora uvaspinalis | Yang, Hu & Xia, 1988 | Carboniferous Tournaisian | China |
| Nicklesopora vadosa | Troizkaya, 1979 | Devonian Famennian | Kazakhstan |
| Nicklesopora varians | (Ulrich, 1890) | Carboniferous Visean | USA |
| Nicklesopora westralis | Ross, 1961 | Devonian Famennian | Australia |
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