1. Species Ceratium axiale Kofoid, 1907
2. Species Ceratium brevearcuatum Bohm, 1976
3. Species Ceratium candelabum
4. Species Ceratium denticulatum (Jörgensen) Paulsen, 1931
5. Species Ceratium divaricatum (Lemmermann) Kofoid, 1908
6. Species Ceratium hirundinella (O.F.Müller) Dujardin, 1841
7. Species Ceratium pacificum E.J.F.Wood, 1963
8. Species Ceratium patentissimum Ostenfeld & Johannes Schmidt, 1901
9. Species Ceratium pleuroceras Schrank, 1793
10. Species Ceratium porrectum Karsten, 1907
11. Species Ceratium seta (Ehrenberg) W.S.Kent, 1881
12. Species Ceratium tenue Ostenfeld & Schmidt, 1901
13. Species Ceratium varians Mangin, 1922
14. Species Ceratium aestuarium Schroder, 1911 accepted as Ceratium hexacanthum var. aestuarium (Schroder) J.Schiller, 1937 accepted as Tripos aestuarius (Schröder) F.Gómez, 2013 (synonym)
15. Species Ceratium arcuatum (Gourret) Pavillard accepted as Neoceratium euarcuatum (Jörgensen) F.Gómez, D.Moreira & P.Lopez-Garcia, 2010 accepted as Tripos euarcuatus (Jørgensen) F.Gómez, 2013 (synonym)
16. Species Ceratium arcuatum (Gourret) Cleve, 1900 accepted as Tripos muelleri var. arcuatus (Gourret) F.Gómez, 2013 (synonym)
17. Species Ceratium arietinum Cleve, 1900 accepted as Tripos arietinus (Cleve) F.Gómez, 2021
18. Species Ceratium aultii H.W.Graham & Bronikovsky, 1944 accepted as Tripos aultii (H.W.Graham & Bronikovsky) F. Gómez, 2014 (Validity)
19. Species Ceratium azoricum Cleve, 1900 accepted as Tripos azoricus (Cleve) F.Gómez, 2013 (synonym)
20. Species Ceratium balechii Maeve del Castillo, Okolodkov & Zamudio, 2003 accepted as Tripos dens (Ostenfeld & Johannes Schmidt) F.Gómez, 2013 (unaccepted > junior subjective synonym, Validity)
21. Species Ceratium batavum Paulsen, 1908 accepted as Tripos batavus (Paulsen) F.Gómez, 2013 (synonym)
22. Species Ceratium belone Cleve, 1900 accepted as Tripos belone (Cleve) F.Gómez, 2013
23. Species Ceratium berghii Gourret, 1883 accepted as Tripos fusus (Ehrenberg) F.Gómez, 2013 (unaccepted > junior subjective synonym)
24. Species Ceratium biceps Claparède & Lachmann, 1859 accepted as Tripos biceps (Claparède & Lachmann) F.Gómez, 2013 (synonym)
25. Species Ceratium biconicum Murray & Whitting, 1899 accepted as Centrodinium biconicum (Murray & Whitting) F.J.R.Taylor, 1976
26. Species Ceratium bicorne Gourret, 1883 accepted as Tripos bicornis (Gourret) F.Gómez, 2013
27. Species Ceratium bigelowii Kofoid, 1907 accepted as Tripos bigelowii (Kofoid) F.Gómez, 2013
28. Species Ceratium boehmii H.W.Graham & Bronikovsky, 1944 accepted as Tripos boehmii (H.W.Graham & Bronikovsky) F.Gómez, 2013 (synonym)
29. Species Ceratium breve (Ostenfeld & Schmidt) Schröder, 1906 accepted as Tripos brevis (Ostenfeld & Johannes Schmidt) F.Gómez, 2013
30. Species Ceratium brunellii Rampi, 1942 accepted as Tripos brunellii (Rampi) F.Gómez, 2013
31. Species Ceratium bucephalum (Cleve) Cleve, 1900 accepted as Tripos bucephalus (Cleve) F.Gómez, 2013 (synonym)
32. Species Ceratium buceros Zacharias, 1906 accepted as Tripos buceros (Zacharias) F.Gómez, 2013 (synonym)
33. Species Ceratium californiense Kofoid, 1907 accepted as Tripos californiensis (Kofoid) F.Gómez, 2013 (synonym)
34. Species Ceratium candelabrum (Ehrenberg) F.Stein, 1883 accepted as Tripos candelabrum (Ehrenberg) F.Gómez, 2013
35. Species Ceratium carnegiei H.W.Graham & Bronikovsky, 1944 accepted as Tripos carnegiei (H.W.Graham & Bronikovsky) F.Gómez, 2013
36. Species Ceratium carriense Gourret, 1883 accepted as Tripos carriensis (Gourret) F.Gómez, 2013 (synonym)
37. Species Ceratium cephalotum (Lemmermann) Jörgensen, 1911 accepted as Tripos cephalotus (Lemmermann) F.Gómez, 2013
38. Species Ceratium ceylanicum Schröder, 1906 accepted as Tripos ceylanicus (Schröder) F.Gómez, 2013
39. Species Ceratium claviger Kofoid, 1907 accepted as Tripos claviger (Kofoid) F.Gómez, 2013 (synonym)
40. Species Ceratium coarctatum Pavillard, 1905 accepted as Tripos coarctatus (Pavillard) F.Gómez, 2013 (synonym)
41. Species Ceratium compressum Gran, 1912 accepted as Tripos compressus (Gran) F.Gómez, 2013
42. Species Ceratium concilians Jörgensen, 1920 accepted as Tripos concilians (Jørgensen) F.Gómez, 2013
43. Species Ceratium contortum (Gourret) Cleve, 1900 accepted as Tripos contortus (Gourret) F.Gómez, 2013
44. Species Ceratium contrarium (Gourret) Pavillard, 1905 accepted as Tripos contrarius (Gourret) F.Gómez, 2013
45. Species Ceratium curvicorne (Daday) Cleve, 1900 accepted as Tripos curvicornis (Daday) F.Gómez, 2013
46. Species Ceratium declinatum (Karsten) Jørgensen, 1911 accepted as Tripos declinatus (G.Karsten) F.Gómez, 2013
47. Species Ceratium declinatum G.Karsten, 1907 accepted as Tripos declinatus (G.Karsten) F.Gómez, 2013 (synonym)
48. Species Ceratium deflexum (Kofoid) Jörgensen, 1911 accepted as Tripos deflexus (Kofoid) F.Gómez, 2013
49. Species Ceratium dens Ostenfeld & J.Schmidt, 1901 accepted as Tripos dens (Ostenfeld & Johannes Schmidt) F.Gómez, 2013 (unaccepted > superseded combination)
50. Species Ceratium depressum Gourret, 1883 accepted as Tripos candelabrum (Ehrenberg) F.Gómez, 2013
51. Species Ceratium digitatum F.Schütt, 1895 accepted as Tripos digitatus (F.Schütt) F.Gómez, 2013
52. Species Ceratium dilatatum Gourret, 1883 accepted as Tripos candelabrum (Ehrenberg) F.Gómez, 2013
53. Species Ceratium divergens (Ehrenberg) Claparède & Lachmann, 1859 accepted as Protoperidinium divergens (Ehrenberg) Balech, 1974
54. Species Ceratium egyptiacum Halim, 1963 accepted as Tripos egyptiacus (Halim) F.Gómez, 2013 (Validity)
55. Species Ceratium ehrenbergii Kofoid, 1907 accepted as Tripos ehrenbergii (Kofoid) F.Gómez, 2013 (Validity)
56. Species Ceratium elegans Schröder, 1906 accepted as Tripos elegans (Schröder) F.Gómez, 2013
57. Species Ceratium euarcuatum Jørgensen, 1920 accepted as Tripos euarcuatus (Jørgensen) F.Gómez, 2013
58. Species Ceratium eugrammum Kofoid accepted as Neoceratium minutum (Jörgensen) F.Gómez, D.Moreira & P.López-Garcia, 2010 accepted as Tripos minutus (E.G.Jørgensen) F.Gómez, 2013 (synonym)
59. Species Ceratium eugrammum (Ehrenberg) W.S.Kent, 1881 accepted as Tripos eugrammus (Ehrenberg) F.Gómez, 2013 (synonym)
60. Species Ceratium extensum (Gourret) Cleve-Euler, 1900 accepted as Tripos extensus (Gourret) F.Gómez, 2013
61. Species Ceratium falcatiforme Jörgensen, 1920 accepted as Tripos falcatiformis (Jørgensen) F.Gómez, 2013
62. Species Ceratium falcatum (Kofoid) Jörgensen, 1920 accepted as Tripos falcatus (Kofoid) F.Gómez, 2013
63. Species Ceratium filicorne Steemann Nielsen, 1934 accepted as Tripos filicornis (Steemann Nielsen) F.Gómez, 2013
64. Species Ceratium flagelliferum Cleve, 1900 accepted as Tripos flagelliferus (Cleve) F.Gómez, 2013 (synonym)
65. Species Ceratium furca (Ehrenberg) Claparède & Lachmann, 1859 accepted as Tripos furca (Ehrenberg) F.Gómez, 2013
66. Species Ceratium fusus (Ehrenberg) Dujardin, 1841 accepted as Tripos fusus (Ehrenberg) F.Gómez, 2013
67. Species Ceratium gallicum Kofoid, 1907 accepted as Tripos gallicus (Kofoid) F.Gómez, 2013 (synonym)
68. Species Ceratium geniculatum (Lemmermann) Cleve, 1901 accepted as Tripos geniculatus (Lemmermann) F.Gómez, 2013
69. Species Ceratium gibberum Gourret, 1883 accepted as Tripos gibberus (Gourret) F.Gómez, 1883
70. Species Ceratium globatum Gourret, 1883 accepted as Tripos candelabrum (Ehrenberg) F.Gómez, 2013 (synonym)
71. Species Ceratium globosum Gourret, 1883 accepted as Tripos globosus (Gourret) F.Gómez, 2013
72. Species Ceratium gracile (Gourret) Jorgensen, 1911 accepted as Neoceratium symmetricum (Pavillard) F.Gómez, D.Moreira & P.Lopez-Garcia, 2010 accepted as Tripos symmetricus (Pavillard) F.Gómez, 2013 (synonym)
73. Species Ceratium gracile Pavillard, 1905 accepted as Tripos gracilis (Pavillard) F.Gómez, 2013
74. Species Ceratium gravidum Gourret, 1883 accepted as Tripos gravidus (Gourret) F.Gómez, 2013
75. Species Ceratium heterocamptum (Jörgensen) Ostenfeld & Schmidt, 1901 accepted as Tripos heterocamptus (Jörgenen) F.Gómez, 2013
76. Species Ceratium hexacanthum Gourret, 1883 accepted as Tripos hexacanthus (Gourret) F.Gómez, 2013
77. Species Ceratium hircus Schröder, 1909 accepted as Tripos hircus (Schröder) F.Gómez, 2013
78. Species Ceratium horridum (Cleve) Gran, 1902 accepted as Tripos horridus (Cleve) F.Gómez, 2013
79. Species Ceratium humile Jörgensen, 1911 accepted as Tripos humilis (Jörgenen) F.Gómez, 2013 (synonym)
80. Species Ceratium hundhausenii Schröder, 1906 accepted as Tripos hundhausenii (Schröder) F.Gómez, 2013 (synonym)
81. Species Ceratium hyperboreum Cleve, 1900 accepted as Tripos hyperboreus (Cleve) F.Gómez, 2013
82. Species Ceratium incisum (G.Karsten) Jørgensen, 1911 accepted as Tripos incisus (Karsten) F.Gómez, 2013
83. Species Ceratium inclinatum Kofoid, 1907 accepted as Tripos inclinatus (Kofoid) F.Gómez, 2013 (synonym)
84. Species Ceratium inflatum (Kofoid) E.G.Jørgensen, 1911 accepted as Tripos inflatus (Kofoid) F.Gómez, 2013
85. Species Ceratium intermedium (Jorgensen) Jorgensen, 1905 accepted as Tripos intermedius (Jörgenen) F.Gómez, 2013 (synonym)
86. Species Ceratium inversum Karsten, 1907 accepted as Tripos inversus (Karsten) F.Gómez, 2013
87. Species Ceratium japonicum Schröder, 1906 accepted as Tripos japonicus (Schröder) F.Gómez, 2013 (synonym)
88. Species Ceratium karstenii Pavillard, 1907 accepted as Tripos karstenii (Pavillard) F.Gómez, 1907
89. Species Ceratium kofoidii Jørgensen, 1911 accepted as Tripos kofoidii (E.G.Jørgensen) F.Gómez, 2013
90. Species Ceratium labradoricum Vanhoffen, 1897 accepted as Neoceratium arcticum (Ehrenberg) F.Gómez, D.Moreira & P.López-Garcia, 2010 accepted as Ceratium arcticum (Ehrenberg) L.Maggi, 1880 accepted as Tripos arcticus (Vanhöffen) F.Gómez, 2013 (synonym)
91. Species Ceratium lamellicorne Kofoid, 1908 accepted as Tripos lamellicornis (Kofoid) F.Gómez, 2013 (synonym)
92. Species Ceratium lanceolatum Kofoid, 1907 accepted as Tripos lanceolatus (Kofoid) F.Gómez, 2013 (Validity)
93. Species Ceratium leptosomum Jörgensen, 1911 accepted as Tripos leptosomus (E.G.Jørgensen) F.Gómez, 2013 (synonym)
94. Species Ceratium limulus (Pouchet) Gourret, 1883 accepted as Tripos limulus (Pouchet) F.Gómez, 2013
95. Species Ceratium lineatum (Ehrenberg) Cleve, 1899 accepted as Tripos lineatus (Ehrenberg) F.Gómez, 2013
96. Species Ceratium longicorne Perty, 1849 accepted as Ceratium hirundinella (O.F.Müller) Dujardin, 1841 (synonym)
97. Species Ceratium longinum (Karsten) Jörgensen, 1911 accepted as Tripos longinus (Karsten) F.Gómez, 2013 (synonym)
98. Species Ceratium longipes (Bailey) Gran, 1902 accepted as Tripos longipes (Bailey) F.Gómez, 2013
99. Species Ceratium longirostrum Gourret, 1883 accepted as Tripos longirostrum (Gourret) Hallegraeff & Huisman, 2020
100. Species Ceratium longissimum (Schröder) Kofoid, 1907 accepted as Tripos longissimus (Schröder) F.Gómez, 2013 (synonym)
101. Species Ceratium lunula Schimper ex Karsten, 1906 accepted as Tripos lunula (Schimper ex Karsten) F.Gómez, 2013
102. Species Ceratium macroceras Schrank, 1802 accepted as Ceratium hirundinella (O.F.Müller) Dujardin, 1841 (synonym)
103. Species Ceratium macroceros (Ehrenberg) Vanhöffen, 1897 accepted as Tripos macroceros (Ehrenberg) Hallegraeff & Huisman, 2020
104. Species Ceratium macroceros (Ehrenberg) Cleve, 1899 accepted as Tripos macroceros (Ehrenberg) Hallegraeff & Huisman, 2020 (synonym)
105. Species Ceratium massiliense (Gourret) Karsten, 1906 accepted as Tripos massiliensis (Gourret) F.Gómez, 2013
106. Species Ceratium michaelis (Ehrenberg) W.S.Kent, 1881 accepted as Protoperidinium steinii (Jørgensen, 1899) Balech, 1974 (synonym)
107. Species Ceratium minus Gourret, 1883 accepted as Tripos minor (Gourret) Gómez, 2013
108. Species Ceratium minutum Jörgensen, 1920 accepted as Tripos minutus (E.G.Jørgensen) F.Gómez, 2013
109. Species Ceratium molle Kofoid, 1907 accepted as Tripos mollis (Kofoid) F.Gómez, 2013
110. Species Ceratium mollis Kofoid, 1907 accepted as Ceratium molle Kofoid, 1907 accepted as Tripos mollis (Kofoid) F.Gómez, 2013 (synonym)
111. Species Ceratium neglectum Ostenfeld, 1903 accepted as Tripos neglectus (Ostenfeld) F.Gómez, 2013 (synonym)
112. Species Ceratium obesum Pavillard, 1930 accepted as Tripos obesus (Pavillard) F.Gómez, 2013 (synonym)
113. Species Ceratium obliquum Gourret, 1883 (unaccepted)
114. Species Ceratium obtusum Gourret, 1883 (unaccepted)
115. Species Ceratium okamurae Schröder, 1906 (unaccepted)
116. Species Ceratium ostenfeldii Kofoid, 1907 (unaccepted)
117. Species Ceratium oviforme Daday, 1888 (unaccepted, synonym)
118. Species Ceratium pacificum Schröder, 1906 (unaccepted)
119. Species Ceratium palmatum (Schroder) Schroder (unaccepted, synonym)
120. Species Ceratium paradoxides Cleve, 1900 (unaccepted)
121. Species Ceratium parvum Gourret, 1883 (unaccepted)
122. Species Ceratium pavillardii Jørgensen, 1911 (unaccepted)
123. Species Ceratium pellucidum Gourret, 1883 (unaccepted)
124. Species Ceratium pennatum Kofoid, 1907 (unaccepted)
125. Species Ceratium pentagonum Gourret, 1883 (unaccepted)
126. Species Ceratium petersii Steemann Nielsen, 1934 (unaccepted)
127. Species Ceratium platycorne Daday, 1888 (unaccepted, basionym)
128. Species Ceratium praelongum (Lemmermann) Kofoid ex Jörgensen, 1911 (unaccepted)
129. Species Ceratium procerum Gourret, 1883 (unaccepted)
130. Species Ceratium protuberans (Karsten) Paulsen, 1931 (unaccepted)
131. Species Ceratium pulchellum Schröder, 1906 (unaccepted)
132. Species Ceratium ramakrishnae Subrahmanyan, 1968 (unaccepted, synonym)
133. Species Ceratium ranipes Cleve, 1900 (unaccepted)
134. Species Ceratium recurvatum Schröder, 1906 (unaccepted, synonym)
135. Species Ceratium recurvum (Jørgensen) Reinecke, 1973 (unaccepted, synonym)
136. Species Ceratium reflexum Cleve, 1900 (unaccepted)
137. Species Ceratium reticulatum (Pouchet) Cleve, 1900 (unaccepted, synonym)
138. Species Ceratium robustum Ostenfeld & Johannes Schmidt, 1901 (unaccepted, synonym)
139. Species Ceratium rostellum Gourret, 1883 (unaccepted)
140. Species Ceratium saltans Schröder, 1906 (unaccepted, synonym)
141. Species Ceratium scapiforme Kofoid, 1907 (unaccepted, synonym)
142. Species Ceratium schmidtii Jørgensen, 1911 (unaccepted, synonym)
143. Species Ceratium schrankii Kofoid, 1907 (unaccepted, synonym)
144. Species Ceratium schroederi Nie, 1936 (unaccepted, synonym)
145. Species Ceratium schroeteri B.Schröder, 1906 (unaccepted)
146. Species Ceratium setaceum Jørgensen, 1911 (unaccepted)
147. Species Ceratium strictum (Okamura & Nishikawa) Kofoid, 1906 (unaccepted, synonym)
148. Species Ceratium subcontortum Schröder, 1906 (unaccepted)
149. Species Ceratium subrobustum (Jorgensen) Steemann Nielsen, 1934 (unaccepted, synonym)
150. Species Ceratium subsalsum (Ostenfeld) Apstein, 1911 (unaccepted)
151. Species Ceratium sumatranum (Karsten) Jørgensen, 1911 (unaccepted, synonym)
152. Species Ceratium symmetricum Pavillard, 1905 (unaccepted)
153. Species Ceratium tasmaniae E.J.F.Wood, 1963 (unaccepted, Validity)
154. Species Ceratium tenuissimum Kofoid, 1907 (unaccepted, synonym)
155. Species Ceratium teres Kofoid, 1907 (unaccepted)
156. Species Ceratium tricarinatum Kofoid, 1907 (unaccepted, synonym)
157. Species Ceratium trichoceros (Ehrenberg) Kofoid, 1881 (unaccepted)
158. Species Ceratium tripodioides (Jorgensen) Steemann Nielsen, 1934 (unaccepted, synonym)
159. Species Ceratium tripos (O.F.Müller) Nitzsch, 1817 (unaccepted)
160. Species Ceratium uncinus Sournia, 1972 (unaccepted, Validity)
161. Species Ceratium uteri A.S.Campbell, 1934 (unaccepted, Validity)
162. Species Ceratium volans Cleve, 1900 (unaccepted, synonym)
163. Species Ceratium vultur Cleve, 1900 (unaccepted, synonym)
164. Species Ceratium inflatum N.Peters, 1934 (uncertain, uncertain taxonomic status subjected to verification)
165. Species Ceratium inflexum (Gourret) Schröder (uncertain, uncertain taxonomic status subjected to verification)
166. Species Ceratium quinqueforme Gourret, 1883 (uncertain > unassessed)

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