Type species: Petralia undata MacGillivray, 1869
This genus includes the species:
| Harmer, 1957 | Recent | Indonesia | WoRMS 472419 | |
| Stach, 1936 | Recent | Australia | WoRMS 472420 | |
| Guha & Gopikrishna, 2005 | Neogene Miocene Aquitanian | India Gujarat | WoRMS 1406416 | |
| MacGillivray, 1869 | Recent | Australia | WoRMS 472418 |
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| Petralia ingens | Petralia livingstonei | Petralia undata (SEM image also available) |
Harmer notebook - entry for Petralia