Type species: Hippothoa porosa Smitt, 1873
This genus includes the species:
| David & Pouyet, 1978 | Paleogene Eocene Priabonian | USA Mississippi | WoRMS 1409380 | |
| Berning, Tilbrook & Rosso, 2008 | Recent | East Atlantic Ghana | WoRMS 471014 | |
| Ramalho & Moraes, 2021 | Recent | West Atlantic Brazil | WoRMS 1497615 | |
| Ziko, 1985 | Paleogene Eocene Priabonian | Egypt | WoRMS 1409381 | |
| David & Pouyet, 1978 | Neogene Miocene Serravallian | France | WoRMS 1409382 | |
| Guha & Gopikrishna, 2007 | Paleogene? | India Gujarat | WoRMS 1409383 | |
| (Pouyet, 1976) | Neogene Miocene-Pliocene | Spain, Morocco, Sicily | WoRMS 1414133 | |
| (David & Pouyet, 1976) | Neogene Miocene | France, Austria | WoRMS 1414134 | |
| Berning, Tilbrook & Rosso, 2008 | Recent | Atlantic Madeira | WoRMS 471016 | |
| (Smitt, 1873) | Recent | West Atlantic | WoRMS 146855 | |
| Berning, Tilbrook & Rosso, 2008 | Recent | Mediterranean | WoRMS 471015 | |
| Zágoršek, Filipescu, Holcová, 2010 | Neogene Miocene | Rumania | WoRMS 1409384 |
Therenia porosa at The Bryozoans of the Pacific.