Type species: Pergensia nidulata Walford, 1894
This genus includes the species:
The type species is a junior synonym of Diastopora belemnitarum d'Orbigny, 1850 (Walter, 1969). Consequently, the genus is a subjective synonym of Microecia.
Pergensia nidulata | Walford, 1894 | Jurassic | England | WoRMS 1406354 |