| Palatinus S.C. Craveiro, A.J. Calado, N. Daugbjerg & Moestrup, 2009 |
| Palatinus apiculatus (Ehrenb.) S.C. Craveiro, A.J. Calado, N. Daugbjerg & Moestrup, 2009 |
| Parvodinium Carty, 2008 |
| Parvodinium deflandrei (M. Lefèvre) Carty, 2008 |
| Parvodinium inconspicuum (Lemmerm.) Carty, 2008 |
| Parvodinium umbonatum (F. Stein) Carty, 2008 |
| Parvodinium umbonatum var. umbonatum (F. Stein) Carty, 2008 |
| Peridiniopsidaceae Gottschling, Kretschmann & Zerdoner Calasan, 2017 |
| Peridiniopsis Lemmerm., 1904 |
| Peridiniopsis asymmetrica L. Mangin, 1911 |
| Peridiniopsis cunningtonii Lemmerm., 1907 |
| Peridiniopsis elpatiewskyi (Ostenf.) Bourr., 1968 |
| Peridiniopsis penardii (Lemmerm.) Bourr., 1968 |
| Peridiniopsis polonica (Woloszynska) Bourr., 1968 |