Type species: Flustra lineata Linnaeus, 1758
This genus includes the species:
| Callopora acuminella | Berthelsen, 1962 | Paleogene Paleocene Danian | Denmark |
| Callopora armata | O'Donoghue & O'Donoghue, 1926 | Recent | Pacific Canada |
| Callopora asanoi | Kataoka, 1961 | Neogene Pleistocene | Japan |
| Callopora aviculosa | Voigt, 1930 | Cretaceous Maastrichtian | Germany Rugen |
| Callopora bathyalis | Harmelin, 1975 | Recent | Atlantic Azores |
| Callopora biauriculata | (Römer, 1863) | Oligocene Miocene |
Germany France |
| Callopora binkhorsti | (Ubaghs, 1879) | Cretaceous | Netherlands |
| Callopora bugei | Labracherie, 1975 | Paleogene Eocene | France |
| Callopora calceolus | (Levinsen, 1925) | Cretaceous Maastrichtian | Denmark, Netherlands |
| Callopora canui | Silén, 1941 | Recent | Pacific Japan |
| Callopora caudata | Canu & Bassler, 1928 | Recent | Atlantic Gulf of Mexico |
| Callopora ciplyensis | Voigt, 1957 | Cretaceous Maastrichian | Belgium |
| Callopora circularis | (d'Orbigny, 1852) | Cretaceous Turonian | France |
| Callopora confluens | Cook, 1968 | Recent | Atlantic |
| Callopora convexa | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | USA North Carolina |
| Callopora coralliformis | (Brydone, 1910) | Cretaceous Santonian | England, Sweden |
| Callopora corniculifera | (Hincks, 1882) | Recent Neogene |
Pacific Canada Japan, USA California |
| Callopora crassospina | Canu & Bassler, 1920 | Neogene Eocene Priabonian | USA, North Carolina |
| Callopora craticula | (Alder, 1856) | Recent | North Atlantic, Arctic |
| Callopora cucullata | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | USA Georgia |
| Callopora decidua | Dick & Ross, 1988 | Recent | N Pacific Alaska |
| Callopora depressa | Cook, 1968 | Recent | E Atlantic Ghana |
| Callopora derjugini | Kluge, 1955 | Recent | Arctic Barents Sea |
| Callopora deseadensis | Lopez Gappa, 1981 | Recent | SW Atlantic Argentina |
| Callopora diluvii | (Voigt, 1924) | Paleocene Danian | Germany |
| Callopora discreta | (Hincks, 1862) | Recent | NE Atlantic |
| Callopora dumerilii | (Audouin, 1826) | Recent Pliocene, Miocene |
Atlantic, Mediterranean Europe |
| Callopora dumerilii lata | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | USA North Carolina |
| Callopora dumerilii pouilleti (Status?) |
(Alder, 1857) | Recent | Atlantic |
| Callopora exilis | Vigneaux, 1949 | Neogene Miocene Burdigalian | France |
| Callopora fenestrata | (Reuss, 1848) | Neogene Miocene-Pliocene | Europe, North Africa |
| Callopora filoparietis | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | USA Mississippi |
| Callopora filoparietis montgomeryensis | McGuirt, 1941 | Paleogene Eocene Priabonian | USA Alabama |
| Callopora flora | (Brydone, 1916) | Cretaceous Coniacian | England |
| Callopora fortuna | (Brydone, 1929) | Cretaceous Coniacian, Campanian | England, Sweden |
| Callopora hannoverana | Voigt, 1924 | Cretaceous Santonian | Germany |
| Callopora hexapora | (Reuss, 1854) | Cretaceous | Austria, Netherlands |
| Callopora horniana | Bassler, 1936 | Neogene Pleistocene | USA California |
| Callopora horridoidea | Androsova, 1958 | Recent | NW Pacific Sakhalin |
| Callopora ifoeensis | Voigt, 1930 | Cretaceous Campanian | Sweden |
| Callopora ingens | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | USA Mississippi |
| Callopora inconspicua | (O'Donoghue & O'Donoghue, 1923) | Recent | N Pacific Canada |
| Callopora inornata | (d'Orbigny, 1853) | Cretaceous Campanian | France, Germany |
| Callopora invigilata | (Brydone, 1910) | Cretaceous-Paleocene | England, Europe |
| Callopora jamesi | O'Donoghue & de Watteville, 1944 | Recent | Indian O. South Africa |
| Callopora jboehmi | Voigt, 1924 | Cretaceous Santonian | Germany |
| Callopora jerseyensis | (Ulrich & Bassler, 1907) | Paleogene Paleocene Thanetian | USA New Jersey |
| Callopora klugei | Androsova, 1958 | Recent | NW Pacific Sakhalin |
| Callopora lamellata | Androsova, 1958 | Recent | NW Pacific Sakhalin |
| Callopora lanceolata | Canu & Bassler, 1923 | Neogene Pliocene Zanclean | USA Virginia |
| Callopora langi | (Brydone, 1910) | Cretaceous Maastrichtian, Campanian | England, Germany, Denmark |
| Callopora lata | (Kluge, 1907) | Recent | Arctic |
| Callopora levigata | Canu, 1922 | Cretaceous Maastrichtian | Madagascar |
| Callopora lineata | (Linnaeus, 1758) | Recent | Atlantic |
| Callopora longispinosa | Androsova, 1958 | Recent | NW Pacific Sakhalin |
| Callopora lyra | (von Hagenow, 1839) | Cretaceous-Paleocene | NW Europe |
| Callopora lyraeformis | Voigt, 1930 | Cretaceous Campanian | Germany |
| Callopora macilenta | (Jullien, 1882) | Recent | NE Atlantic Spain |
| Callopora minuscula | (Hincks, 1882) | Recent | NE Pacific |
| Callopora minuta | Harmelin, 1973 | Recent | Mediterranean |
| Callopora missilis | (Brydone, 1916) | Cretaceous Campanian | England |
| Callopora monilifera | (Maplestone, 1901) | Neogene | SE Australia |
| Callopora monocera | (Marsson, 1887) | Cretaceous, Paleogene Paleocene | Denmark |
| Callopora montgomeryensis | McGuirt, 1941 | Paleogene Eocene Priabonian | USA Alabama |
| Callopora multifissa | (Brydone, 1918) | Cretaceous, Santonian | England, Germany |
| Callopora multifissa lyratopunctata | Voigt, 1930 | Cretaceous Santonian-Campanian | Germany, Sweden |
| Callopora mundula | Canu & Bassler, 1920 | Paleogene Eocene Priabonian | USA Mississippi |
| Callopora nazcae | Moyano, 1991 | Recent | Chile |
| Callopora noxontownensis | Canu & Bassler, 1933 | Paleogene Paleocene Thanetian | USA New Jersey |
| Callopora nuda | Kühn, 1930 | Paleogene Paleocene/Eocene | Austria |
| Callopora nuda (Homonmym) |
Dick & Ross, 1988 | Recent | N Pacific Alaska |
| Callopora obesa | Kluge, 1952 | Recent | N Pacific Bering Sea |
| Callopora oculata | (d'Orbigny, 1852) | Cretaceous Senonian | France, Denmark |
| Callopora pachyteichos | Voigt, 1930 | Cretaceous Santonian | Germany |
| Callopora panhoplites | (Ortmann, 1890) | Recent | Japan |
| Callopora parvirostris | Canu & Bassler, 1923 | Neogene Miocene Langhian | USA Maryland |
| Callopora patelliformis | Voigt, 1930 | Cretaceous Maastrichtian | Germany |
| Callopora polytaxis | Voigt, 1930 | Cretaceous Campanian | Germany |
| Callopora precocialis | Gordon, 1984 | Recent | SW Pacific Kermadec Islands |
| Callopora pseudofortuna | Voigt, 1962 | Late Cretaceous | Russia |
| Callopora pumicosa | Canu & Bassler, 1928 | Recent | Atlantic Gulf of Mexico |
| Callopora rosenkrantzi | Berthelsen, 1962 | Paleogene Paleocene Danian | Denmark |
| Callopora rylandi | Bobin & Prenant, 1965 | Recent | NE Atlantic |
| Callopora sarae | Grischenko, Dick & Mawatari, 2007 | Recent | Japan Hokkaido |
| Callopora schmidti | Voigt, 1962 | Late Cretaceous | Germany |
| Callopora sedovi | Kluge, 1962 | Recent | Arctic, N. Atlantic |
| Callopora? seroniae | Voigt, 1985 | Cretaceous Maastrichtian | France |
| Callopora sexspinosa | Canu & Bassler, 1920 | Paleogene Paleocene Danian | USA Alabama |
| Callopora stefniensis | Berthelsen, 1962 | Paleogene Paleocene Danian | Denmark |
| Callopora stipata | Canu & Bassler, 1920 | Paleogene Paleocene Danian | USA Alabama |
| Callopora subaurita | el Hajjaji, 1992 | Neogene Miocene Messinian | Morocco |
| Callopora sulcata | Canu & Bassler, 1926 | Cretaceous Maastrichtian | USA Tennessee |
| Callopora tegulata | Voigt, 1987 | Cenozoic Paleocene Danian | Netherlands |
| Callopora torquata | Canu & Bassler, 1926 | Cretaceous Maastrichtian | USA Tennessee |
| Callopora tuberosa | Canu & Bassler, 1920 | Cenozoic Paleocene Danian | USA Georgia |
| Callopora verrucosa | Canu & Bassler, 1930 | Recent | E Pacific Galapagos |
| Callopora vesicularis (?C. vesiculosa) |
(Beissel, 1865) | Cretaceous | Germany, England |
| Callopora vicina | Canu & Bassler, 1920 | Paleogene Oligocene Rupelian | USA Alabama |
| Callopora weslawski | Kukliński & Taylor, 2006 | Recent | Arctic |
| Callopora woodwardi | (Brydone, 1910) | Cretaceous Campanian | England |
| Callopora woodwardi minor | Voigt, 1930 | Cretaceous Campanian; | Sweden |
| Callopora woodwardi spinata | Voigt, 1930 | Cretaceous Campanian; | Sweden |
This information is based upon various sources. The reliability of some entries remains doubtful, as many species have not been revised or re-examined since they were described. The genus Callopora has been used as a "basket" for many encrusting anascans with ovicells. The relationships of many of these species may ultimately be impossible to unravel definitively. I am indebted to the late Alan Horowitz for his compilation, and to Dr. J. Pachut.
I would be grateful for corrections to, or critical reviews of this information. This is not a "final" version (an impossible ideal), but a working document.
Callopora craticula from Svalbard (SEM by Piotr Kuklinski.)