| Nominal Species (n = 5) | Present allocation (n = 5) | Ref. |
|---|---|---|
| Petasiella asymmetrica Uchida, 1947 | Petasiella asymmetrica | 19 |
| Petasus atavus Haeckel, 1879 | Petasus atavus | 19 |
| Dipetasus digonimus Haeckel, 1879 | Petasus digonimus | 2992 |
| Petasata eucope Haeckel, 1879 | Petasus eucope | 2992 |
| Petachnum tiaropsis Haeckel, 1879 | Petasus tiaropsis | 2992 |