Peridinium achromaticum Levander, 1902 accepted as Protoperidinium achromaticum (Levander) Balech, 1974 (additional source)
Peridinium constrictum T.H.Abé, 1936 accepted as Archaeperidinium constrictum (T.H.Abé) T.Liu, K.N.Mertens, K.Matsuoka & H.Gu, 2015 (basis of record)
Peridinium ellipsoideum Mangin, 1913 (basis of record)
Peridinium formosum J.Pavillard, 1909 (basis of record)
Peridinium gaarderae Balech, 1967 (basis of record)
Peridinium majus (P.A.Dangeard) P.A.Dangeard (basis of record)
Peridinium obesum Matzenauer, 1933 (basis of record)
Peridinium quinquecorne T.H.Abé, 1927 accepted as Peridinium quadridentatum (F.Stein) Gert Hansen, 1995 (additional source)
Peridinium spheroides P.A.Dangeard, 1927 (basis of record)
Peridinium spirale (Gaarder) Balech (basis of record)
Peridinium subsphaericum Balech, 1959 (basis of record)
Peridinium symmetricum Halim, 1967 (basis of record)
Protoperidinium Bergh, 1881 (additional source)
Protoperidinium abei (Paulsen, 1931) Balech, 1974 (new combination reference)
Protoperidinium acanthophorum (Balech, 1962) Balech, 1974 (new combination reference)
Protoperidinium achromaticum (Levander) Balech, 1974 (new combination reference)
Protoperidinium acutipes (P.-A.Dangeard, 1927) Balech, 1974 (new combination reference)
Protoperidinium acutum (G.Karsten, 1907) Balech, 1974 (new combination reference)
Protoperidinium adeliense (Balech, 1958) Balech, 1974 (new combination reference)
Protoperidinium adense (Matzenauer, 1933) Balech, 1974 (new combination reference)
Protoperidinium adulterum (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium aequatoriale (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium affine (Balech, 1958) Balech, 1974 (new combination reference)
Protoperidinium aliferum (Gaarder) Balech, 1974 (new combination reference)
Protoperidinium americanum (Gran & Braarud, 1935) Balech, 1974 (new combination reference)
Protoperidinium amplum (Matzenauer, 1933) Balech, 1974 (new combination reference)
Protoperidinium ampulla (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium anceps (Meunier, 1910) Balech, 1974 (new combination reference)
Protoperidinium anguipes (Balech, 1967) Balech, 1974 (new combination reference)
Protoperidinium angustum (P.-A.Dangeard, 1927) Balech, 1974 (new combination reference)
Protoperidinium anomaloplaxum (Balech, 1964) Balech, 1974 (new combination reference)
Protoperidinium antarcticum (Schimper ex Karsten) Balech, 1974 (new combination reference)
Protoperidinium anthonyi (Fauré-Fremiet, 1908) Balech, 1974 (new combination reference)
Protoperidinium applanatum (Mangin) Balech, 1974 (new combination reference)
Protoperidinium archiovatum (Balech) Balech, 1974 (new combination reference)
Protoperidinium areolatum (Peters, 1928) Balech, 1974 (new combination reference)
Protoperidinium asperum (G.H.Wailes, 1928) Balech, 1974 (new combination reference)
Protoperidinium aspidiotum (Balech, 1964) Balech, 1974 (new combination reference)
Protoperidinium asymmetricum (Abé, 1927) Balech, 1974 (new combination reference)
Protoperidinium avellana (Meunier, 1919) Balech, 1974 (new combination reference)
Protoperidinium bellulum (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium biconicum (P.A.Dangeard) Balech, 1974 (new combination reference)
Protoperidinium bimucronatum (J.Schiller) Balech, 1967 (new combination reference)
Protoperidinium bipatens Balech, 1973 (additional source)
Protoperidinium bipes (Paulsen, 1904) Balech, 1974 (new combination reference)
Protoperidinium bispinum (J.Schiller) Balech, 1974 accepted as Protoperidinium bimucronatum (J.Schiller) Balech, 1967 (new combination reference)
Protoperidinium braarudii (Schiller, 1937) Balech, 1974 (new combination reference)
Protoperidinium brachypus (J.Schiller) Balech, 1974 (new combination reference)
Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 (new combination reference)
Protoperidinium brochii (Kofoid & Swezy, 1921) Balech, 1974 (new combination reference)
Protoperidinium bulbosum (Gaarder, 1954) Balech, 1974 (new combination reference)
Protoperidinium bulla (Meunier, 1910) Balech, 1974 (new combination reference)
Protoperidinium capdevillei (Balech, 1959) Balech, 1974 (new combination reference)
Protoperidinium capurroi (Balech, 1959) Balech, 1974 (new combination reference)
Protoperidinium cassum (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium castaneiforme (Mangin, 1926) Balech, 1974 (new combination reference)
Protoperidinium cavispinum (Mangin, 1926) Balech, 1974 (new combination reference)
Protoperidinium cepa (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium cerasus (Paulsen, 1907) Balech, 1973 (additional source)
Protoperidinium charcotii (Balech, 1958) Balech, 1974 (new combination reference)
Protoperidinium claudicans (Paulsen, 1907) Balech, 1974 (new combination reference)
Protoperidinium colombonense (Matzenauer, 1933) Balech, 1974 (new combination reference)
Protoperidinium compressum (Abé) Balech, 1974 (new combination reference)
Protoperidinium concavum (Mangin) Balech, 1974 (new combination reference)
Protoperidinium conicoides (Paulsen) Balech, 1973 (new combination reference)
Protoperidinium conicum (Gran) Balech, 1974 (new combination reference)
Protoperidinium cornutum (Karsten, 1907) Balech, 1974 (new combination reference)
Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 (new combination reference)
Protoperidinium crassipyrum (Balech, 1961) Balech, 1974 (new combination reference)
Protoperidinium cruciferum (Balech, 1971) Balech, 1973 (new combination reference)
Protoperidinium curtipes (Jørgensen, 1912) Balech, 1974 (new combination reference)
Protoperidinium curtum (Balech, 1958) Balech, 1973 (additional source)
Protoperidinium curvipes (Ostenfeld) Balech, 1974 (new combination reference)
Protoperidinium dakariense (P.-A.Dangeard, 1927) Balech, 1974 (new combination reference)
Protoperidinium decens (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium decollatum (Balech, 1971) Balech, 1974 (new combination reference)
Protoperidinium defectum (Balech, 1965) Balech, 1974 (new combination reference)
Protoperidinium deficiens (Meunier, 1919) Balech, 1974 (new combination reference)
Protoperidinium denticulatum (Gran & Braarud, 1935) Balech, 1974 (new combination reference)
Protoperidinium depressum (Bailey, 1854) Balech, 1974 (new combination reference)
Protoperidinium diabolus (Cleve, 1900) Balech, 1974 (new combination reference)
Protoperidinium discoideum (G.H.Wailes, 1928) Balech, 1974 (new combination reference)
Protoperidinium distans (Mangin, 1912) Balech, 1974 (new combination reference)
Protoperidinium divergens (Ehrenberg) Balech, 1974 (new combination reference)
Protoperidinium elegans (Cleve, 1900) Balech, 1974 (new combination reference)
Protoperidinium elegantissimum (Balech, 1958) Balech, 1974 (new combination reference)
Protoperidinium elongatum (Meunier, 1910) Balech, 1974 (new combination reference)
Protoperidinium excentricum (Paulsen, 1907) Balech, 1974 (new combination reference)
Protoperidinium exiguum (Cleve, 1900) Balech, 1974 (new combination reference)
Protoperidinium fatulipes (Kofoid, 1907) Balech, 1974 (new combination reference)
Protoperidinium fimbriatum (Meunier, 1919) Balech, 1974 (new combination reference)
Protoperidinium finlandicum (Paulsen, 1907) Balech, 1974 (new combination reference)
Protoperidinium formosum (Paulsen) Balech, 1974 (new combination reference)
Protoperidinium gaarderae (Balech, 1967) Balech, 1974 (new combination reference)
Protoperidinium gibbosum (Matzenauer, 1933) Balech, 1974 (new combination reference)
Protoperidinium globulum (Stein) Balech, 1974 (new combination reference)
Protoperidinium globulus (Stein, 1883) Balech, 1974 (new combination reference)
Protoperidinium glyptopterum Balech, 1973 (additional source)
Protoperidinium grande (Kofoid, 1907) Balech, 1974 (new combination reference)
Protoperidinium granii (Ostenfeld) Balech, 1974 (new combination reference)