Congruentidium compressum T.H.Abé, 1927 accepted as Protoperidinium compressum (Abé) Balech, 1974 (basis of record)
Glenodinium bipes Paulsen, 1904 accepted as Protoperidinium bipes (Paulsen, 1904) Balech, 1974 (additional source)
Peridinium abei Paulsen, 1931 accepted as Protoperidinium abei (Paulsen, 1931) Balech, 1974 (basis of record)
Peridinium achromaticum Levander, 1902 accepted as Protoperidinium achromaticum (Levander) Balech, 1974 (additional source)
Peridinium acutipes P.-A.Dangeard, 1927 accepted as Protoperidinium acutipes (P.-A.Dangeard, 1927) Balech, 1974 (basis of record)
Peridinium adeliense Balech, 1958 accepted as Protoperidinium adeliense (Balech, 1958) Balech, 1974 (basis of record)
Peridinium adense Matzenauer, 1933 accepted as Protoperidinium adense (Matzenauer, 1933) Balech, 1974 (basis of record)
Peridinium adulterum Balech, 1971 accepted as Protoperidinium adulterum (Balech, 1971) Balech, 1974 (basis of record)
Peridinium affine Balech, 1958 accepted as Protoperidinium affine (Balech, 1958) Balech, 1974 (additional source)
Peridinium africanoides P.-A.Dangeard, 1927 accepted as Protoperidinium latispinum (Mangin, 1926) Balech, 1974 (basis of record)
Peridinium aliferum Gaarder accepted as Protoperidinium aliferum (Gaarder) Balech, 1974 (basis of record)
Peridinium americanum Gran & Braarud, 1935 accepted as Protoperidinium americanum (Gran & Braarud, 1935) Balech, 1974 (basis of record)
Peridinium amplum Matzenauer, 1933 accepted as Protoperidinium amplum (Matzenauer, 1933) Balech, 1974 (basis of record)
Peridinium ampulla Balech, 1971 accepted as Protoperidinium ampulla (Balech, 1971) Balech, 1974 (basis of record)
Peridinium anceps Meunier, 1910 accepted as Protoperidinium anceps (Meunier, 1910) Balech, 1974 (basis of record)
Peridinium anguipes Balech, 1967 accepted as Protoperidinium anguipes (Balech, 1967) Balech, 1974 (basis of record)
Peridinium angustum P.-A.Dangeard, 1927 accepted as Protoperidinium angustum (P.-A.Dangeard, 1927) Balech, 1974 (basis of record)
Peridinium anomaloplaxum Balech, 1964 accepted as Protoperidinium anomaloplaxum (Balech, 1964) Balech, 1974 (basis of record)
Peridinium antarcticum Schimper ex Karsten, 1905 accepted as Protoperidinium antarcticum (Schimper ex Karsten) Balech, 1974 (basis of record)
Peridinium anthonyi Fauré-Fremiet, 1908 accepted as Protoperidinium anthonyi (Fauré-Fremiet, 1908) Balech, 1974 (basis of record)
Peridinium applanatum Manguin, 1926 accepted as Protoperidinium applanatum (Mangin) Balech, 1974 (basis of record)
Peridinium archiovatum Balech, 1958 accepted as Protoperidinium archiovatum (Balech) Balech, 1974 (basis of record)
Peridinium areolatum Peters, 1928 accepted as Protoperidinium areolatum (Peters, 1928) Balech, 1974 (additional source)
Peridinium asperum G.H.Wailes, 1928 accepted as Protoperidinium asperum (G.H.Wailes, 1928) Balech, 1974 (basis of record)
Peridinium aspidiotum Balech, 1964 accepted as Protoperidinium aspidiotum (Balech, 1964) Balech, 1974 (basis of record)
Peridinium bellulum Balech, 1971 accepted as Protoperidinium bellulum (Balech, 1971) Balech, 1974 (basis of record)
Peridinium biconicum P.A..Dangeard, 1927 accepted as Protoperidinium biconicum (P.A.Dangeard) Balech, 1974 (basis of record)
Peridinium bimucronatum J.Schiller, 1935 accepted as Protoperidinium bimucronatum (J.Schiller) Balech, 1967 (basis of record)
Peridinium bispinum J.Schiller, 1937 accepted as Protoperidinium bispinum (J.Schiller) Balech, 1974 accepted as Protoperidinium bimucronatum (J.Schiller) Balech, 1967 (basis of record)
Peridinium braarudi Schiller, 1937 accepted as Protoperidinium braarudii (Schiller, 1937) Balech, 1974 (basis of record)
Peridinium brachypus J.Schiller, 1935 accepted as Protoperidinium brachypus (J.Schiller) Balech, 1974 (basis of record)
Peridinium brevipes Paulsen, 1908 accepted as Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 (basis of record)
Peridinium brintonii Balech, 1962 accepted as Protoperidinium pouchetii (Kofoid & Michener) F.J.R.Taylor & Balech ex Balech, 1988 (basis of record)
Peridinium brochii Kofoid & Swezy, 1921 accepted as Protoperidinium brochii (Kofoid & Swezy, 1921) Balech, 1974 (basis of record)
Peridinium bulbosum Gaarder, 1954 accepted as Protoperidinium bulbosum (Gaarder, 1954) Balech, 1974 (basis of record)
Peridinium bulla Meunier, 1910 accepted as Protoperidinium bulla (Meunier, 1910) Balech, 1974 (basis of record)
Peridinium capdevillei Balech, 1959 accepted as Protoperidinium capdevillei (Balech, 1959) Balech, 1974 (basis of record)
Peridinium capurroi Balech, 1959 accepted as Protoperidinium capurroi (Balech, 1959) Balech, 1974 (basis of record)
Peridinium castaneiforme L.A.Mangin, 1922 accepted as Protoperidinium castaneiforme (Mangin, 1926) Balech, 1974 (basis of record)
Peridinium cavispinum L.A.Mangin, 1922 accepted as Protoperidinium cavispinum (Mangin, 1926) Balech, 1974 (basis of record)
Peridinium cepa Balech, 1971 accepted as Protoperidinium cepa (Balech, 1971) Balech, 1974 (basis of record)
Peridinium charcotii Balech, 1958 accepted as Protoperidinium charcotii (Balech, 1958) Balech, 1974 (basis of record)
Peridinium claudicans Paulsen, 1907 accepted as Protoperidinium claudicans (Paulsen, 1907) Balech, 1974 (basis of record)
Peridinium concavum Mangin, 1926 accepted as Protoperidinium concavum (Mangin) Balech, 1974 (basis of record)
Peridinium conicoides Paulsen, 1905 accepted as Protoperidinium conicoides (Paulsen) Balech, 1973 (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 crassipes Kofoid, 1907 accepted as Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 (additional source)
Peridinium crassipyrum Balech, 1961 accepted as Protoperidinium crassipyrum (Balech, 1961) Balech, 1974 (basis of record)
Peridinium cruciferum Balech, 1971 accepted as Protoperidinium cruciferum (Balech, 1971) Balech, 1973 (basis of record)
Peridinium curtipes Jørgensen, 1912 accepted as Protoperidinium curtipes (Jørgensen, 1912) Balech, 1974 (basis of record)
Peridinium curtum Balech, 1958 accepted as Protoperidinium curtum (Balech, 1958) Balech, 1973 (basis of record)
Peridinium dakariensis P.A.Dangeard, 1927 accepted as Protoperidinium dakariense (P.-A.Dangeard, 1927) Balech, 1974 (basis of record)
Peridinium decens Balech, 1971 accepted as Protoperidinium decens (Balech, 1971) Balech, 1974 (basis of record)
Peridinium decipiens var. curvipes Ostenfeld, 1903 accepted as Protoperidinium curvipes (Ostenfeld) Balech, 1974 (basis of record)
Peridinium decollatum Balech, 1971 accepted as Protoperidinium decollatum (Balech, 1971) Balech, 1974 (basis of record)
Peridinium defectum Balech, 1965 accepted as Protoperidinium defectum (Balech, 1965) Balech, 1974 (basis of record)
Peridinium deficiens Meunier, 1919 accepted as Protoperidinium deficiens (Meunier, 1919) Balech, 1974 (basis of record)
Peridinium denticulatum Gran & Braarud, 1935 accepted as Protoperidinium denticulatum (Gran & Braarud, 1935) Balech, 1974 (basis of record)
Peridinium depressum Bailey, 1854 accepted as Protoperidinium depressum (Bailey, 1854) Balech, 1974 (basis of record)
Peridinium diabolus Cleve, 1900 accepted as Protoperidinium diabolus (Cleve, 1900) Balech, 1974 (additional source)
Peridinium discoides G.H.Wailes, 1928 accepted as Protoperidinium discoideum (G.H.Wailes, 1928) Balech, 1974 (basis of record)
Peridinium distans Mangin accepted as Protoperidinium distans (Mangin, 1912) Balech, 1974 (basis of record)
Peridinium divergens Ehrenberg, 1840 accepted as Protoperidinium divergens (Ehrenberg) Balech, 1974 (basis of record)
Peridinium divergens var. conica Gran, 1900 accepted as Protoperidinium conicum (Gran) Balech, 1974 (basis of record)
Peridinium elegans Cleve, 1900 accepted as Protoperidinium elegans (Cleve, 1900) Balech, 1974 (basis of record)
Peridinium elegantissimum Balech, 1958 accepted as Protoperidinium elegantissimum (Balech, 1958) Balech, 1974 (basis of record)
Peridinium ellipsoides P.A.Dangeard accepted as Protoperidinium ovum (Schiller, 1911) Balech, 1974 (basis of record)
Peridinium ellipsoideum Mangin, 1913 (basis of record)
Peridinium elongatum Meunier, 1910 accepted as Protoperidinium elongatum (Meunier, 1910) Balech, 1974 (basis of record)
Peridinium excentricum Paulsen, 1907 accepted as Protoperidinium excentricum (Paulsen, 1907) Balech, 1974 (basis of record)
Peridinium exiguum Cleve, 1900 accepted as Protoperidinium exiguum (Cleve, 1900) Balech, 1974 (basis of record)
Peridinium fatulipes Kofoid, 1907 accepted as Protoperidinium fatulipes (Kofoid, 1907) Balech, 1974 (basis of record)
Peridinium fimbriatum Meunier, 1919 accepted as Protoperidinium fimbriatum (Meunier, 1919) Balech, 1974 (basis of record)
Peridinium finlandicum Paulsen, 1907 accepted as Protoperidinium finlandicum (Paulsen, 1907) Balech, 1974 (basis of record)
Peridinium formosum J.Pavillard, 1909 (basis of record)
Peridinium gaarderae Balech, 1967 (basis of record)
Peridinium gainii P.-A.Dangeard, 1920 accepted as Protoperidinium divaricatum (Meunier) Parke & J.D.Dodge, 1976 (basis of record)
Peridinium gibbosum Matzenauer, 1933 accepted as Protoperidinium gibbosum (Matzenauer, 1933) Balech, 1974 (basis of record)
Peridinium globosum P.A.Dangeard, 1927 accepted as Peridiniella globosa (P.A.Dangeard) Okolodkov, 2006 (basis of record)
Peridinium globulus Stein, 1883 accepted as Protoperidinium quarnerense (B.Schröder, 1900) Balech, 1974 (additional source)
Peridinium grande Kofoid, 1907 accepted as Protoperidinium grande (Kofoid, 1907) Balech, 1974 (basis of record)
Peridinium granii f. spirale K.R.Gaarder (basis of record)
Peridinium grenlandicum Woloszynska, 1929 accepted as Protoperidinium grenlandicum (Woloszynska) Balech, 1974 (basis of record)
Peridinium helix Balech, 1962 accepted as Protoperidinium helix (Balech, 1962) Balech, 1974 (basis of record)
Peridinium heteracanthum P.A.Dangeard, 1927 accepted as Protoperidinium heteracanthum (P.-A.Dangeard, 1927) Balech, 1974 (basis of record)
Peridinium heteroconicum Matzenauer, 1933 accepted as Protoperidinium heteroconicum (Matzenauer, 1933) Balech, 1974 (basis of record)
Peridinium heterospinum Gaarder, 1954 accepted as Protoperidinium heterospinum (Gaarder, 1954) Balech, 1974 (basis of record)
Peridinium hirobis Abé, 1927 accepted as Protoperidinium hirobis (T.H.Abé) Balech, 1974 (basis of record)
Peridinium huberi J.Schiller, 1929 accepted as Protoperidinium huberi (Schiller, 1929) Balech, 1974 (basis of record)
Peridinium humile Schiller, 1937 accepted as Protoperidinium humile (Schiller, 1937) Balech, 1974 (basis of record)
Peridinium hyalinum Meunier, 1910 accepted as Protoperidinium hyalinum (Meunier, 1910) Balech, 1974 (basis of record)
Peridinium inclinatum Balech, 1964 accepted as Protoperidinium inclinatum (Balech, 1964) Balech, 1974 (basis of record)
Peridinium incognitum Balech, 1959 accepted as Protoperidinium incognitum (Balech, 1959) Balech, 1974 (basis of record)
Peridinium inflatiforme A.Böhm, 1936 accepted as Protoperidinium inflatiforme (Bohm, 1936) Balech, 1974 (basis of record)
Peridinium inflatum Okamura, 1912 accepted as Protoperidinium inflatum (Okamura, 1912) Balech, 1974 (basis of record)
Peridinium islandicum Paulsen, 1904 accepted as Protoperidinium islandicum (Paulsen, 1904) Balech, 1973 (basis of record)
Peridinium joergenseni Balech, 1971 accepted as Protoperidinium joergensenii (Balech, 1971) Balech, 1974 (basis of record)
Peridinium joubini P.-A.Dangeard, 1927 accepted as Protoperidinium joubinii (P.-A.Dangeard, 1927) Balech, 1974 (basis of record)
Peridinium knipowitschii Usachev [Ussatschew], 1927 accepted as Protoperidinium knipowitschii (Usachev, 1927) Balech, 1974 (basis of record)
Peridinium laticeps J.Gröntved & G.Seidenfaden, 1938 accepted as Protoperidinium laticeps (Grontved & Seidenfaden, 1938) Balech, 1974 (basis of record)