Type species: Callopora elegantula Hall, 1852
This genus includes the species:
| Hallopora aequalis | Dyer, 1925 | Ordovician | Canada |
| Hallopora aggregata | Hu, 1982 | M. Silurian | China |
| Hallopora alnifensis | Termier & Termier, 1950 | Ordovician | Morocco |
| Hallopora arguta | Bork & Perry, 1968 | M. Ordovician | USA (Wisconsin) |
| Hallopora baltica | (Hennig, 1908) | Silurian | Gotland |
| Hallopora bassleri | (Hennig, 1908) | Silurian | Gotland |
| Hallopora catata | Liu, 1980 | M. Ordovician | NE China |
| Hallopora clausiformis | Pushkin, 1976 | L. Silurian | Belarus |
| Hallopora claviformis | (Hennig, 1908) | Silurian | Gotland |
| Hallopora congesta | Liu, 199x(undated) | Silurian | China |
| Hallopora congrua | Utgaard & Perry, 1964 | U. Ordovician | USA (Ohio/ Indiana) |
| Hallopora creditensis | Dyer, 1925 | Ordovician | Canada |
| Hallopora cystoidalis | Conti, 1990 | Ordovician | Sardinia |
| Hallopora dalmani | Brood, 1978 | U. Ordovician | Sweden |
| Hallopora danforthensis | Parks, 1925 | Ordovician | Canada |
| Hallopora dumalis magna | Fritz, 1957 | Ordovician | Canada |
| Hallopora elegantula | (Hall, 1852) | Silurian | USA (New York) |
| Hallopora elegantula prolifica | Bassler, 1927 | Silurian | Canada (Anticosti I.) |
| Hallopora elegantuliformis | Modzalevskaya, 1977 | U. Silurian | Russia |
| Hallopora encrustans | Caley, 1936 | Ordovician | Canada |
| Hallopora enodis | Bassler, 1927 | Silurian | Canada (Anticosti I.) |
| Hallopora gigantea | Bradley, 1930 | Ordovician | USA (Illinois) |
| Hallopora gracilens | Bassler, 1927 | Silurian | Canada (Anticosti I.) |
| Hallopora hanshanensis | Xia & Qi, 1989 | L. Silurian | China |
| Hallopora jilinensis | Liu, 1980 | U. Silurian | NE China |
| Hallopora kiselevae | Romanchuk, 1979 | L. Devonian | Russia |
| Hallopora limata | Astrova, 1965 | Ordovician | Russia |
| Hallopora lydiana | Fritz, 1957 | Ordovician | Canada |
| Hallopora mckinneyi | Pushkin, 2002 | Ordovician | Belarus |
| Hallopora macrostoma | Loeblich, 1942 | Ordovician | USA (Oklahoma) |
| Hallopora maculosa | Dyer, 1925 | Ordovician | Canada |
| Hallopora magnopora | Bassler, 1927 | Silurian | Canada (Anticosti I.) |
| Hallopora multipora | Brood, 1978 | U. Ordovician | Sweden |
| Hallopora pachymura | Loeblich, 1942 | Ordovician | USA (Oklahoma) |
| Hallopora peculiaris | Pushkin, 1987 | Ordovician | Belarus |
| Hallopora polita | Modzalevskaya, 1968 | L. Silurian | Russia |
| Hallopora pulchra | Pushkin, 1976 | L. Silurian | Belarus |
| Hallopora raritubulata | Xia & Qi, 1989 | L. Silurian | China |
| Hallopora robusta | Kopajevich, 1984 | U. Ordovician | Mongolia |
| Hallopora separata | Astrova, 1955 | Ordovician | Russia |
| Hallopora silurica | Yang & Xia, 1974 | Silurian | China |
| Hallopora simplex | Astrova, 1965 | Ordovician | Russia |
| Hallopora sinensis | Lu, 1982 | M. Silurian | China |
| Hallopora solbergiensis | Brood, 1978 | U. Ordovician | Sweden |
| Hallopora splendens | Bassler, 1911 | Ordovician | Estonia? |
| Hallopora striata | (Hall, 1852) | Silurian | USA New York, England |
| Hallopora subalta | Parks & Dyer, 1922 | Ordovician | Canada |
| Hallopora tolli | Bassler, 1911 | Ordovician | Estonia? |
| Hallopora undosa | Astrova, 1955 | Ordovician | Russia |
| Hallopora varians | (Hennig, 1908) | Silurian | Gotland |
| Hallopora viatrix | Astrova, 1959 | Silurian | Russia |
| Hallopora wajgatshensis | Astrova, 1965 | Silurian | Russia |
| Hallopora xinjiangensis | Loo, 1981 | L. Palaeozoic? | China |
| Hallopora xizangensis | Hu, 1986 | U. Ordovician | China |
Hallopora from Cincinnati region: at University of Georgia.
Hallopora from Nashville region: at University of Georgia.
Hallopora sp. - from the USA. At the Palaeontological Museum, University of Oslo
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