1. Species Gymnodinium abbreviatum Kofoid & Swezy, 1921
2. Species Gymnodinium achromaticum Lebour, 1917
3. Species Gymnodinium acutissimum Okolodkov, 1997
4. Species Gymnodinium acutiusculum Okolodkov, 1997
5. Species Gymnodinium adriaticum (Schmarda) Kofoid & Swezy, 1921
6. Species Gymnodinium aequatoriale Hasle, 1960
7. Species Gymnodinium agaricoides P.H.Campbell, 1973
8. Species Gymnodinium agiliforme Schiller, 1928
9. Species Gymnodinium albidum J.B.Lackey & E.W.Lackey, 1970
10. Species Gymnodinium albulum Er.Lindemann, 1928
11. Species Gymnodinium allophron J.Larsen, 1994
12. Species Gymnodinium amphityphlum J.Larsen, 1994
13. Species Gymnodinium amphora Kofoid & Swezy, 1921
14. Species Gymnodinium amplinucleum P.H.Campbell, 1973
15. Species Gymnodinium antarcticum A.E.Thessen, D.J.Patterson & S.A.Murray, 2012
16. Species Gymnodinium arcticum Wulff, 1919
17. Species Gymnodinium arcuatum Kofoid, 1931
18. Species Gymnodinium arenicola Dragesco, 1965
19. Species Gymnodinium atomatum J.Larsen, 1994
20. Species Gymnodinium attenuatum Kofoid & Swezy, 1921
21. Species Gymnodinium aurantium P.H.Campbell, 1973
22. Species Gymnodinium auratum Kofoid & Swezy, 1921
23. Species Gymnodinium aureolum (E.M.Hulburt) Gert Hansen, 2000
24. Species Gymnodinium aureum Kofoid & Swezy, 1921
25. Species Gymnodinium australense Ruiner, 1938
26. Species Gymnodinium baccatum Balech, 1965
27. Species Gymnodinium bicaudatum Pavillard, 1905
28. Species Gymnodinium biconicum J.Schiller, 1928
29. Species Gymnodinium bicorne Kofoid & Swezy, 1921
30. Species Gymnodinium bifurcatum Kofoid & Swezy, 1921
31. Species Gymnodinium bilobatum Van Meel, 1969
32. Species Gymnodinium birotundatum van Goor, 1925
33. Species Gymnodinium boguense P.H.Campbell, 1973
34. Species Gymnodinium boguensis P.H.Campbell, 1973
35. Species Gymnodinium bonaerense Akselman, 1985
36. Species Gymnodinium boreale Gaarder, 1953
37. Species Gymnodinium canus Kofoid & Swezy, 1921
38. Species Gymnodinium capitatum Conrad & Kufferath, 1954
39. Species Gymnodinium caput J.Schiller, 1928
40. Species Gymnodinium cassieorum R.E.Norris, 1961
41. Species Gymnodinium catenatum H.W.Graham, 1943
42. Species Gymnodinium chiasmonetrium Norris, 1961
43. Species Gymnodinium chukwanii D.Ballantine, 1961
44. Species Gymnodinium cinctum Kofoid & Swezy, 1921
45. Species Gymnodinium cnodax Conrad & Kufferath, 1954
46. Species Gymnodinium contractum Kofoid & Swezy, 1921
47. Species Gymnodinium corii J.Schiller, 1928
48. Species Gymnodinium corollarium A.M.Sundström, Kremp & Daugbjerg, 2009
49. Species Gymnodinium costatum Kofoid & Swezy, 1921
50. Species Gymnodinium cruciatum J.Massart
51. Species Gymnodinium cucumis Schütt, 1895
52. Species Gymnodinium cyaneofungiforme Conrad & Kufferath, 1954
53. Species Gymnodinium dabendorfense (G.Alberti) J.P.Bujak & E.H.Davies, 1983 †
54. Species Gymnodinium danicans P.H.Campbell, 1973
55. Species Gymnodinium dentatum J.Larsen, 1994
56. Species Gymnodinium diamphidium R.E.Norris, 1961
57. Species Gymnodinium diploconus Schütt, 1895
58. Species Gymnodinium dissimile Kofoid & Swezy, 1921
59. Species Gymnodinium dogielii Kofoid & Swezy, 1921
60. Species Gymnodinium doma Kofoid & Swezy, 1921
61. Species Gymnodinium dorsalisulcum (Hulbert, J.J.A.McLaughlin & Zahl) Shauna Murray, Salas & Hallegraeff, 2007
62. Species Gymnodinium elongatum B.Hope, 1954
63. Species Gymnodinium endofasciculum P.H.Campbell, 1973
64. Species Gymnodinium enorme Ballantine, 1964
65. Species Gymnodinium exechegloutum R.E.Norris, 1961
66. Species Gymnodinium filum Lebour, 1917
67. Species Gymnodinium flavum Kofoid & Swezy, 1921
68. Species Gymnodinium fossarum Conrad & Kufferath, 1954
69. Species Gymnodinium fukushimae Hada, 1966
70. Species Gymnodinium fulgens Kofoid & Swezy, 1921
71. Species Gymnodinium fuscum (Ehrenberg) F.Stein, 1878
72. Species Gymnodinium fusiforme Kofoid & Swezy, 1921
73. Species Gymnodinium fusus Schütt, 1896
74. Species Gymnodinium galaeformis Matzenauer, 1933
75. Species Gymnodinium galeaeforme Matzenauer, 1933
76. Species Gymnodinium galeatum J.Larsen, 1994
77. Species Gymnodinium galeiforme Okolodkov, 1997
78. Species Gymnodinium galesianum P.H.Campbell, 1973
79. Species Gymnodinium gelbum Kofoid, 1931
80. Species Gymnodinium gibbera J.Schiller, 1928
81. Species Gymnodinium glandiforme Conrad & Kufferath, 1954
82. Species Gymnodinium gleba Schütt, 1895
83. Species Gymnodinium gracilentum P.H.Campbell, 1973
84. Species Gymnodinium grammaticum (Pouchet) Kofoid & Swezy, 1921
85. Species Gymnodinium guttiforme J.Larsen, 1994
86. Species Gymnodinium guttula Balech, 1976
87. Species Gymnodinium hamulus Kofoid & Swezy, 1921
88. Species Gymnodinium herbaceum Kofoid, 1921
89. Species Gymnodinium heterostriatum Kofoid & Swezy, 1921
90. Species Gymnodinium hiroshimaense Hada, 1968
91. Species Gymnodinium hulburtii P.H.Campbell, 1973
92. Species Gymnodinium impudicum (S.Fraga & I.Bravo) Gert Hansen & Moestrup, 2000
93. Species Gymnodinium incertum E.C.Herdman, 1924
94. Species Gymnodinium incisum Kofoid & Swezy, 1921
95. Species Gymnodinium incoloratum Conrad & Kufferath, 1954
96. Species Gymnodinium inconstans van Meel, 1969
97. Species Gymnodinium intercalare Bursa, 1961
98. Species Gymnodinium inusitatum H.Gu, 2013
99. Species Gymnodinium irregulare B.Hope, 1954
100. Species Gymnodinium japonicum Hada, 1974
101. Species Gymnodinium katodiniforme Elbrachter, 1979
102. Species Gymnodinium kesslitzii (J.Schiller) Moestrup, 2018
103. Species Gymnodinium kowalevskii Pitzik, 1967
104. Species Gymnodinium lachmannii Kent, 1881
105. Species Gymnodinium lanskoi Rouchijajnen, 1968
106. Species Gymnodinium lazulum Hulburt, 1957
107. Species Gymnodinium leptum R.E.Norris, 1961
108. Species Gymnodinium lineatum Kofoid & Swezy, 1921
109. Species Gymnodinium lineopunicum Kofoid & Swezy, 1921
110. Species Gymnodinium litoralis A.Reñé, 2011
111. Species Gymnodinium lobularis P.H.Campbell, 1973
112. Species Gymnodinium loburare P.H.Campbell, 1973
113. Species Gymnodinium lucidum D.Ballantine, 1964
114. Species Gymnodinium luteo-viride van Meel, 1969
115. Species Gymnodinium maguelonnense Biecheler, 1952
116. Species Gymnodinium mammosum van Meel, 1969
117. Species Gymnodinium marinum Kent, 1880
118. Species Gymnodinium massarti J.Schiller, 1932
119. Species Gymnodinium maximum Nordli, 1951
120. Species Gymnodinium metum Hulburt, 1957
121. Species Gymnodinium microreticulatum C.J.S.Bolch, Negri & G.M.Hallegraeff, 1999
122. Species Gymnodinium minor Lebour, 1917
123. Species Gymnodinium minus Lebour, 1917
124. Species Gymnodinium minutulum J.Larsen, 1994
125. Species Gymnodinium modestum Balech, 1976
126. Species Gymnodinium multilineatum Kofoid & Swezy, 1921
127. Species Gymnodinium multistriatum Kofoid & Swezy, 1921
128. Species Gymnodinium najadeum J.Schiller, 1928
129. Species Gymnodinium nanum Schiller, 1928
130. Species Gymnodinium neapolitanum J.Schiller, 1928
131. Species Gymnodinium nolleri M.Ellegaard & Ø.Moestrup, 1999
132. Species Gymnodinium nucaceum Okolodkov, 1997
133. Species Gymnodinium obliquum Okolodkov, 1997
134. Species Gymnodinium oceanicum Hasle, 1960
135. Species Gymnodinium ochraceum Kofoid, 1931
136. Species Gymnodinium octo J.Larsen, 1994
137. Species Gymnodinium oppressum Conrad, 1926
138. Species Gymnodinium opressum Conrad, 1926
139. Species Gymnodinium ostenfeldii J.Schiller, 1928
140. Species Gymnodinium ovatocapitatum Van Meel, 1969
141. Species Gymnodinium ovoideum Okolodkov, 1997
142. Species Gymnodinium ovulum Kofoid & Swezy, 1921
143. Species Gymnodinium pallidum Skuja, 1939
144. Species Gymnodinium parvum J.Larsen, 1994
145. Species Gymnodinium patagonicum Balech, 1971
146. Species Gymnodinium paulseinii Schiller
147. Species Gymnodinium paulsenii J.Schiller, 1928
148. Species Gymnodinium perplexum van Meel, 1969
149. Species Gymnodinium pingue van Meel, 1969
150. Species Gymnodinium placidum E.C.Herdman, 1922
151. Species Gymnodinium polycomma J.Larsen, 1994
152. Species Gymnodinium prolatum J.Larsen, 1994
153. Species Gymnodinium pulchrum J.Schiller, 1928
154. Species Gymnodinium pumilum J.Larsen, 1994
155. Species Gymnodinium punctatum Pouchet, 1887
156. Species Gymnodinium puniceum Kofoid & Swezy, 1921
157. Species Gymnodinium purpureum Skuja, 1956
158. Species Gymnodinium pygmaeum Lebour, 1925
159. Species Gymnodinium pyrenoidosum T.Horiguchi & Chihara, 1988
160. Species Gymnodinium radiatum Kofoid & Swezy, 1921
161. Species Gymnodinium ravenescens Kofoid & Swezy, 1921
162. Species Gymnodinium regulare van Meel, 1969
163. Species Gymnodinium rete Schutt, 1895
164. Species Gymnodinium rhomboides Schütt, 1895
165. Species Gymnodinium roseostigma P.H.Campbell, 1973
166. Species Gymnodinium rubricauda Kofoid & Swezy, 1921
167. Species Gymnodinium rubrocinctum Lebour, 1925
168. Species Gymnodinium rubrum Koifoid & Swezy, 1921
169. Species Gymnodinium scaphium van Meel, 1969
170. Species Gymnodinium schaefferi S.Morris, 1937
171. Species Gymnodinium scopulosum Kofoid & Swezy, 1921
172. Species Gymnodinium semidivisum J.Schiller, 1928
173. Species Gymnodinium servatum W.Busch, 1927
174. Species Gymnodinium situla Kofoid & Swezy, 1921
175. Species Gymnodinium smaydae N.S.Kang, H.J.Jeong & Ø. Moestrup., 2014
176. Species Gymnodinium soyai Hada, 1970
177. Species Gymnodinium sphaericum (Calkins) Kofoid & Swezy, 1921
178. Species Gymnodinium sphaeroideum Kofoid, 1931
179. Species Gymnodinium stellatum Hulburt, 1957
180. Species Gymnodinium striassimum Hulbert
181. Species Gymnodinium subroseum P.H.Campbell, 1973
182. Species Gymnodinium subrufescens G.W.Martin, 1929
183. Species Gymnodinium suffuscum van Meel, 1969
184. Species Gymnodinium sulcatum Kofoid & Swezy, 1921
185. Species Gymnodinium telma van Meel, 1969
186. Species Gymnodinium translucens Kofoid & Swezy, 1921
187. Species Gymnodinium translucens P.H.Campbell, 1973
188. Species Gymnodinium trapeziforme Attaran-Fariman & Bolch, 2007
189. Species Gymnodinium triangularis Lebour, 1917
190. Species Gymnodinium uberrimum (G.J.Allman) Kofoid & Swezy, 1921
191. Species Gymnodinium valdecompressum P.H.Campbell, 1973
192. Species Gymnodinium variabile E.C.Herdman, 1924
193. Species Gymnodinium vas Van Meel, 1969
194. Species Gymnodinium venator Flo Jørgensen & Murray, 2004
195. Species Gymnodinium verruculosum P.H.Campbell, 1973
196. Species Gymnodinium violescens Kofoid & Swezy, 1921
197. Species Gymnodinium virescens Wood, 1963
198. Species Gymnodinium viridaliut J.Schiller, 1955
199. Species Gymnodinium viridans van Meel, 1969
200. Species Gymnodinium viridescens Kofoid, 1931
201. Species Gymnodinium voukii J.Schiller, 1928
202. Species Gymnodinium wilczekii Pouchet, 1894
203. Species Gymnodinium wulffii J.Schiller, 1933
204. Species Gymnodinium acutiusclum Okolodkov, 1997 accepted as Gymnodinium acutiusculum Okolodkov, 1997
205. Species Gymnodinium affine Dogiel, 1906 accepted as Chytriodinium affine (Dogiel) Chatton, 1920
206. Species Gymnodinium agile Kofoid & Swezy, 1921 accepted as Durinskia agilis (Kofoid & Swezy) Saburova, Chomérat & Hoppenrath, 2012 (synonym)
207. Species Gymnodinium agile Herdman, 1922 accepted as Herdmania litoralis J.D.Dodge, 1981 (synonym)
208. Species Gymnodinium archimedis Pouchet, 1883 accepted as Cochlodinium archimedes (Pouchet) Lemmermann, 1899 (synonym)
209. Species Gymnodinium arenicolum Dragesco, 1965 accepted as Gymnodinium arenicola Dragesco, 1965
210. Species Gymnodinium asymmetricum Massart, 1920 accepted as Katodinium asymmetricum (Massart) A.R.Loeblich, III, 1965 (synonym)
211. Species Gymnodinium bei H.J.Spero, 1987 accepted as Pelagodinium bei (H.J.Spero) Siano, Montresor, Probert & Vargas, 2010 (deleted in Algaebase)
212. Species Gymnodinium breve C.C.Davis, 1948 accepted as Karenia brevis (C.C.Davis) Gert Hansen & Moestrup, 2000 (basionym)
213. Species Gymnodinium brevisulcatum F.H.Chang, 1999 accepted as Karenia brevisulcata (F.H.Chang) Gert Hansen & Moestrup, 2000 (basionym)
214. Species Gymnodinium chlorophorum Elbrächter & Schnepf, 1996 accepted as Lepidodinium chlorophorum (M.Elbrächter & E.Schnepf) Gert Hansen, Botes & Salas, 2007 (synonym)
215. Species Gymnodinium coeruleum Dogiel, 1906 accepted as Balechina coerulea (Dogiel) F.J.R.Taylor, 1976 accepted as Cucumeridinium coeruleum (Dogiel) F.Gomez, P.López-García, H.Takayama & D.Moreira, 2015 (synonym)
216. Species Gymnodinium conicum Kofoid & Swezy, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (synonym)
217. Species Gymnodinium fissum Levander, 1894 accepted as Levanderina fissa (Levander) Moestrup, Hakanen, Gert Hansen, Daugbjerg & M.Ellegaard, 2014 (basionym)
218. Species Gymnodinium frigidum Balech, 1965 accepted as Gymnodinium antarcticum A.E.Thessen, D.J.Patterson & S.A.Murray, 2012
219. Species Gymnodinium fungiforme Anisimova, 1926 accepted as Speroidium fungiforme (Anisimova) Moestrup & Calado, 2018
220. Species Gymnodinium galatheanum Braarud, 1957 accepted as Karlodinium veneficum (D.Ballantine) J.Larsen, 2000 (synonym)
221. Species Gymnodinium geminatum Schütt, 1895 accepted as Cochlodinium geminatum (Schütt) Schütt, 1896 accepted as Polykrikos geminatus (Schütt) D.Qiu & S.Lin, 2013 (synonym)
222. Species Gymnodinium glandula E.C.Herdman, 1924 accepted as Aduncodinium glandula (E.C.Herdman) N.S.Kang, H.J.Jeong & Moestrup, 2015
223. Species Gymnodinium glaucum Conrad, 1926 accepted as Amphidinium conradii J.Schiller, 1932 (synonym)
224. Species Gymnodinium gracile Bergh, 1882 accepted as Balechina gracilis (Bergh) F.Gómez, Artigas & Gast, 2021
225. Species Gymnodinium halophilum Biecheler, 1952 accepted as Biecheleria halophila (Biecheler) Moestrup, Lindberg & Daugbjerg, 2009
226. Species Gymnodinium helix Pouchet, 1887 accepted as Cochlodinium helix Lemmermann,1899 (synonym)
227. Species Gymnodinium helix Schütt, 1895 accepted as Cochlodinium helix Lemmermann,1899 (synonym)
228. Species Gymnodinium hiemale Woloszynska, 1917 accepted as Jadwigia hiemalis (Woloszynska) Moestrup, 2018
229. Species Gymnodinium instriatum (Freudenthal & J.J.Lee) D.W.Coats, 2002 accepted as Levanderina fissa (Levander) Moestrup, Hakanen, Gert Hansen, Daugbjerg & M.Ellegaard, 2014
230. Species Gymnodinium lebourae Pavillard, 1921 accepted as Gymnodinium lebouriae Pavillard, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (misspelling)
231. Species Gymnodinium lebouriae Pavillard, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968
232. Species Gymnodinium leopoliensis Woloszynska, 1917 accepted as Woloszynskia leopoliensis (Woloszynska) R.H.Thompson, 1951 accepted as Tovellia leopoliensis (Woloszynska) Moestrup, K.Lindberg & Daugbjerg, 2005 (synonym)
233. Species Gymnodinium linucheae R.V.Trench & L.-V.Thinh, 1995 accepted as Symbiodinium linucheae (Trench & Thinh) T.C.LaJenesse, 2001
234. Species Gymnodinium lira Kofoid & Swezy, 1921 accepted as Cucumeridinium lira (Kofoid & Swezy) F.Gómez, P. López-García, H.Takayama & D.Moreira, 2015
235. Species Gymnodinium lohmannii Paulsen, 1908 accepted as Gymnodinium gracile Bergh, 1882 accepted as Balechina gracilis (Bergh) F.Gómez, Artigas & Gast, 2021 (synonym)
236. Species Gymnodinium lunula Schütt, 1895 accepted as Pyrocystis lunula (Schütt) Schütt, 1896 (synonym)
237. Species Gymnodinium microadriaticum (Freudenthal) F.J.R.Taylor, 1971 accepted as Symbiodinium microadriaticum LaJeunesse, 2017 (synonym)
238. Species Gymnodinium micrum (B.Leadbeater & J.D.Dodge) Loeblich III, 1970 accepted as Karlodinium veneficum (D.Ballantine) J.Larsen, 2000 (synonym)
239. Species Gymnodinium mikimotoi Miyake & Kominami ex Oda, 1935 accepted as Karenia mikimotoi (Miyake & Kominami ex Oda) Gert Hansen & Moestrup, 2000 (synonym)
240. Species Gymnodinium minutum Lebour, 1925 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995 (synonym)
241. Species Gymnodinium monadicum (Deising) W.S.Kent, 1881 accepted as Gymnodinium partitum (Perty) Moestrup, 2018
242. Species Gymnodinium myriopyrenoides H.Yamaguchi, T.Nakayama, A.Kai & I.Inouye, 2011 accepted as Nusuttodinium myriopyrenoides (H.Yamaguchi, T.Nakayama, A.Kai & I.Inouye) Y.Takano & H.Yamaguichi, 2014
243. Species Gymnodinium nagasakiense H.Takayama & M.Adachi, 1985 accepted as Karenia mikimotoi (Miyake & Kominami ex Oda) Gert Hansen & Moestrup, 2000 (synonym)
244. Species Gymnodinium natalense T.Horiguchi & R.N.Pienaar, 1994 accepted as Ansanella natalensis (T.Horiguchi & R.N.Pienaar) Dawut, Sym & T.Horiguchi, 2018
245. Species Gymnodinium nelsonii G.W.Martin, 1929 accepted as Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000 (synonym)
246. Species Gymnodinium ovato-capitatum van Meel, 1969 accepted as Gymnodinium ovatocapitatum Van Meel, 1969
247. Species Gymnodinium pachydermatum Kofoid & Swezy, 1921 accepted as Balechina pachydermata (Kofoid & Swezy) A.R.Loeblich Jr. & A.R.Loeblich III, 1968 accepted as Balechina gracilis (Bergh) F.Gómez, Artigas & Gast, 2021
248. Species Gymnodinium parasiticum Dogiel, 1906 accepted as Chytriodinium parasititum (Dogiel) Chatton, 1912
249. Species Gymnodinium parvulum Schütt, 1895 accepted as Gyrodinium parvulum (Schütt) Kofoid & Swezy, 1921
250. Species Gymnodinium pascheri (Suchlandt) Schiller, 1954 accepted as Borghiella pascheri (Suchlandt) Moestrup, 2018 (synonym)
251. Species Gymnodinium pellucidum Wulff, 1916 accepted as Gyrodinium pellucidum (Wulff) J.Schiller, 1933 (synonym)
252. Species Gymnodinium pellucidum (E.C.Herdman) Flø Jørgensen & Shauna Murray, 2004 accepted as Gymnodinium venator Flo Jørgensen & Murray, 2004 (synonym)
253. Species Gymnodinium pigmentosum (Dodge) Loeblich, 1970 accepted as Aureodinium pigmentosum Dodge, 1967 (synonym)
254. Species Gymnodinium pirum Schütt, 1895 accepted as Cochlodinium pirum (Schütt) Lemmermann, 1921 (synonym)
255. Species Gymnodinium polyphemus Pouchet accepted as Warnowia polyphemus (Pouchet) J.Schiller, 1933 (synonym)
256. Species Gymnodinium pouchetii Lemmermann, 1899 accepted as Oodinium pouchetii (Lemmermann) Chatton, 1912
257. Species Gymnodinium pseudonoctiluca Pouchet, 1885 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (synonym)
258. Species Gymnodinium pulchellum J.Larsen, 1994 accepted as Takayama pulchella (Larsen) de Salas, Bolch & Hallegraeff, 2003 (synonym)
259. Species Gymnodinium pyrocystis Jørgensen, 1912 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (synonym)
260. Species Gymnodinium quadrilobatum T.Horiguchi & R.N.Pienaar, 1994 accepted as Dinothrix quadrilobata (T.Horiguchi & R.N.Pienaar) R.Onuma & T.Horiguchi (unaccepted > superseded combination)
261. Species Gymnodinium roseum Dogiel, 1906 accepted as Chytriodinium roseum (Dogiel) Chatton, 1912
262. Species Gymnodinium sangineum Hirasaka, 1924 accepted as Gymnodinium sanguineum K.Hirasaka, 1922 accepted as Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000
263. Species Gymnodinium sanguineum K.Hirasaka, 1922 accepted as Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000 (synonym)
264. Species Gymnodinium simplex (Lohmann) Kofoid & Swezy, 1921 accepted as Protodinium simplex Lohmann, 1908
265. Species Gymnodinium spirale Bergh, 1882 accepted as Gyrodinium spirale (Bergh) Kofoid & Swezy, 1921 (synonym)
266. Species Gymnodinium splendens Lebour, 1925 accepted as Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000 (basionym)
267. Species Gymnodinium strangulatum F.Schütt, 1895 accepted as Cochlodinium strangulatum (F.Schütt) F.Schütt, 1896 (synonym)
268. Species Gymnodinium striatissimum E.M.Hulburt, 1957 accepted as Gyrodinium striatissimum (E.M.Hulburt) Gert Hansen & Ø.Moestrup, 2000 (synonym)
269. Species Gymnodinium sugashimanii J.Cachon, H.Saton, M.Cachon & S.Sato, 1989 accepted as Gyrodinium sugashimanii J.Cachon, H.Saton, M.Cachon & S.Sato, 1989 (synonym)
270. Species Gymnodinium tenuissimum Lauterborn, 1894 accepted as Borghiella tenuissima (Lauterborn) Moestrup, Gert Hansen & Daugbjerg, 2008
271. Species Gymnodinium tintinnicola Lohmann, 1908 accepted as Duboscquella tintinnicola (Lohmann) Chatton
272. Species Gymnodinium uncatenatum (Hulburt) Hallegraeff, 2002 accepted as Levanderina fissa (Levander) Moestrup, Hakanen, Gert Hansen, Daugbjerg & M.Ellegaard, 2014 (synonym)
273. Species Gymnodinium veneficum D.Ballantine, 1956 accepted as Karlodinium veneficum (D.Ballantine) J.Larsen, 2000 (synonym)
274. Species Gymnodinium vestifici Schütt, 1895 accepted as Kapelodinium vestifici (Schütt) Boutrup, Moestrup & Daugbjerg, 2016
275. Species Gymnodinium viride Lebour, 1917 accepted as Gymnodinium conicum Kofoid & Swezy, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (synonym)
276. Species Gymnodinium viridis Lebour, 1917 accepted as Gymnodinium conicum Kofoid & Swezy, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (synonym)
277. Species Gymnodinium vitiligo D.Ballantine, 1956 accepted as Karlodinium vitiligo (D.Ballantine) J.Larsen, 2000 (synonym)
278. Species Gymnodinium excavatum Van Meel, 1969 (uncertain)
279. Species Gymnodinium falcatum V.G.Madhav & B.Kondalarao, 2004 (uncertain > unassessed)

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