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 aeschrum (T.H.Harris) Moestrup
8. Species Gymnodinium agaricoides P.H.Campbell, 1973
9. Species Gymnodinium agiliforme Schiller, 1928
10. Species Gymnodinium alaskense Bursa ex Moestrup & Calado, 2018
11. Species Gymnodinium albidum J.B.Lackey & E.W.Lackey, 1970
12. Species Gymnodinium albulum Er.Lindemann, 1928
13. Species Gymnodinium allophron J.Larsen, 1994
14. Species Gymnodinium alsiophyllum Skuja, 1964
15. Species Gymnodinium amphiconicoides J.Schiller, 1955
16. Species Gymnodinium amphityphlum J.Larsen, 1994
17. Species Gymnodinium amphora Kofoid & Swezy, 1921
18. Species Gymnodinium amplinucleum P.H.Campbell, 1973
19. Species Gymnodinium antarcticum A.E.Thessen, D.J.Patterson & S.A.Murray, 2012
20. Species Gymnodinium arcticum Wulff, 1919
21. Species Gymnodinium arcuatum Kofoid, 1931
22. Species Gymnodinium arenicola Dragesco, 1965
23. Species Gymnodinium astigmatum Moestrup & Calado, 2018
24. Species Gymnodinium atomatum J.Larsen, 1994
25. Species Gymnodinium attenuatum Kofoid & Swezy, 1921
26. Species Gymnodinium aurantium P.H.Campbell, 1973
27. Species Gymnodinium auratum Kofoid & Swezy, 1921
28. Species Gymnodinium aureolum (E.M.Hulburt) Gert Hansen, 2000
29. Species Gymnodinium aureum Kofoid & Swezy, 1921
30. Species Gymnodinium australe Playfair, 1919
31. Species Gymnodinium australense Ruiner, 1938
32. Species Gymnodinium austriacum J.Schiller, 1932
33. Species Gymnodinium baccatum Balech, 1965
34. Species Gymnodinium baicalense N.L.Antipova, 1955
35. Species Gymnodinium baumeisteri J.Schiller, 1955
36. Species Gymnodinium bicaudatum Pavillard, 1905
37. Species Gymnodinium biciliatum Ohno, 1911
38. Species Gymnodinium biconicum J.Schiller, 1928
39. Species Gymnodinium bicorne Kofoid & Swezy, 1921
40. Species Gymnodinium bifurcatum Kofoid & Swezy, 1921
41. Species Gymnodinium bilobatum Van Meel, 1969
42. Species Gymnodinium birotundatum van Goor, 1925
43. Species Gymnodinium bisaetosum Lindemann, 1928
44. Species Gymnodinium blax T.M.Harris, 1939
45. Species Gymnodinium bogoriense G.A.Klebs, 1912
46. Species Gymnodinium boguense P.H.Campbell, 1973
47. Species Gymnodinium boguensis P.H.Campbell, 1973
48. Species Gymnodinium bohemicum Fott, 1938
49. Species Gymnodinium bonaerense Akselman, 1985
50. Species Gymnodinium boreale Gaarder, 1953
51. Species Gymnodinium canus Kofoid & Swezy, 1921
52. Species Gymnodinium capitatum Conrad & Kufferath, 1954
53. Species Gymnodinium caput J.Schiller, 1928
54. Species Gymnodinium cassieorum R.E.Norris, 1961
55. Species Gymnodinium catenatum H.W.Graham, 1943
56. Species Gymnodinium caudatum Prescott, 1944
57. Species Gymnodinium chiasmonetrium Norris, 1961
58. Species Gymnodinium chiastosporum (T.M.Harris) Cridland, 1958
59. Species Gymnodinium chinensis A.E.Thessen, D.J.Patterson & S.A.Murray, 2012
60. Species Gymnodinium christenii Thessen, D.J.Patterson & Shauna Murray, 2012
61. Species Gymnodinium chukwanii D.Ballantine, 1961
62. Species Gymnodinium cinctum Kofoid & Swezy, 1921
63. Species Gymnodinium cnecoides T.M.Harris, 1940
64. Species Gymnodinium cnodax Conrad & Kufferath, 1954
65. Species Gymnodinium colymbeticum T.M.Harris, 1940
66. Species Gymnodinium concavum Skvortsov, 1968
67. Species Gymnodinium contractum Kofoid & Swezy, 1921
68. Species Gymnodinium corii J.Schiller, 1928
69. Species Gymnodinium corollarium A.M.Sundström, Kremp & Daugbjerg, 2009
70. Species Gymnodinium corpusculum (Perty) W.S.Kent, 1881
71. Species Gymnodinium costatum Kofoid & Swezy, 1921
72. Species Gymnodinium cruciatum J.Massart
73. Species Gymnodinium cryophilum (G.J.Wedemayer, L.W.Wilcox & L.E.Graham) Gert Hansen & Moestrup, 2000
74. Species Gymnodinium cucumis Schütt, 1895
75. Species Gymnodinium cyaneofungiforme Conrad & Kufferath, 1954
76. Species Gymnodinium dabendorfense (G.Alberti) J.P.Bujak & E.H.Davies, 1983 †
77. Species Gymnodinium danicans P.H.Campbell, 1973
78. Species Gymnodinium danubiense J.Schiller, 1955
79. Species Gymnodinium dentatum J.Larsen, 1994
80. Species Gymnodinium depressum Skvortsov, 1968
81. Species Gymnodinium devorans J.Schiller, 1955
82. Species Gymnodinium diamphidium R.E.Norris, 1961
83. Species Gymnodinium diploconus Schütt, 1895
84. Species Gymnodinium discoidale T.M.Harris, 1940
85. Species Gymnodinium dissimile Kofoid & Swezy, 1921
86. Species Gymnodinium dogielii Kofoid & Swezy, 1921
87. Species Gymnodinium doma Kofoid & Swezy, 1921
88. Species Gymnodinium dorsalisulcum (Hulbert, J.J.A.McLaughlin & Zahl) Shauna Murray, Salas & Hallegraeff, 2007
89. Species Gymnodinium elongatum B.Hope, 1954
90. Species Gymnodinium endofasciculum P.H.Campbell, 1973
91. Species Gymnodinium enorme Ballantine, 1964
92. Species Gymnodinium eucyaneum H.J.Hu, 1983
93. Species Gymnodinium eufrigidum J.Schiller, 1955
94. Species Gymnodinium eurytopum Skuja, 1948
95. Species Gymnodinium exechegloutum R.E.Norris, 1961
96. Species Gymnodinium filum Lebour, 1917
97. Species Gymnodinium flavum Kofoid & Swezy, 1921
98. Species Gymnodinium fontinale (C.E.M.Bicudo & Skvortsov) Moestrup, 2018
99. Species Gymnodinium fossarum Conrad & Kufferath, 1954
100. Species Gymnodinium frigidum Wolszynska, 1952
101. Species Gymnodinium fukushimae Hada, 1966
102. Species Gymnodinium fulgens Kofoid & Swezy, 1921
103. Species Gymnodinium fuscum (Ehrenberg) F.Stein, 1878
104. Species Gymnodinium fusiforme Kofoid & Swezy, 1921
105. Species Gymnodinium fusus Schütt, 1896
106. Species Gymnodinium galaeformis Matzenauer, 1933
107. Species Gymnodinium galeaeforme Matzenauer, 1933
108. Species Gymnodinium galeatum J.Larsen, 1994
109. Species Gymnodinium galeiforme Okolodkov, 1997
110. Species Gymnodinium galesianum P.H.Campbell, 1973
111. Species Gymnodinium gelbum Kofoid, 1931
112. Species Gymnodinium gibbera J.Schiller, 1928
113. Species Gymnodinium glandiforme Conrad & Kufferath, 1954
114. Species Gymnodinium gleba Schütt, 1895
115. Species Gymnodinium gracilentum P.H.Campbell, 1973
116. Species Gymnodinium grammaticum (Pouchet) Kofoid & Swezy, 1921
117. Species Gymnodinium granii J.Schiller, 1955
118. Species Gymnodinium guttiforme J.Larsen, 1994
119. Species Gymnodinium guttula Balech, 1976
120. Species Gymnodinium hamulus Kofoid & Swezy, 1921
121. Species Gymnodinium herbaceum Kofoid, 1921
122. Species Gymnodinium heterostriatum Kofoid & Swezy, 1921
123. Species Gymnodinium hippocastanum Cridland, 1958
124. Species Gymnodinium hiroshimaense Hada, 1968
125. Species Gymnodinium huber-pestalozzii J.Schiller, 1955
126. Species Gymnodinium hulburtii P.H.Campbell, 1973
127. Species Gymnodinium hyalinum A.J.Schilling, 1891
128. Species Gymnodinium hyperxanthoides (T.M.Harris) Moestrup, 2018
129. Species Gymnodinium hyperxanthum (T.M.Harris) Moestrup, 2018
130. Species Gymnodinium impatiens Skuja, 1964
131. Species Gymnodinium impudicum (S.Fraga & I.Bravo) Gert Hansen & Moestrup, 2000
132. Species Gymnodinium incertum E.C.Herdman, 1924
133. Species Gymnodinium incisum Kofoid & Swezy, 1921
134. Species Gymnodinium incoloratum Conrad & Kufferath, 1954
135. Species Gymnodinium inconstans van Meel, 1969
136. Species Gymnodinium inerme (Schmarda) Kent, 1881
137. Species Gymnodinium intercalare Bursa, 1961
138. Species Gymnodinium intermedium Moestrup & Calado, 2018
139. Species Gymnodinium inusitatum H.Gu, 2013
140. Species Gymnodinium inversum Nygaard, 1929
141. Species Gymnodinium irregulare B.Hope, 1954
142. Species Gymnodinium irregulare Conrad & Kufferath, 1954
143. Species Gymnodinium japonicum Hada, 1974
144. Species Gymnodinium katodiniforme Elbrachter, 1979
145. Species Gymnodinium kesslitzii (J.Schiller) Moestrup, 2018
146. Species Gymnodinium kowalevskii Pitzik, 1967
147. Species Gymnodinium lachmannii Kent, 1881
148. Species Gymnodinium lackeyi Kiselev, 1954
149. Species Gymnodinium lacustre J.Schiller, 1933
150. Species Gymnodinium lalitae Shyam & Sarma, 1980
151. Species Gymnodinium lanskoi Rouchijajnen, 1968
152. Species Gymnodinium lantzschii Utermöhl, 1925
153. Species Gymnodinium latum Skuja, 1948
154. Species Gymnodinium lazulum Hulburt, 1957
155. Species Gymnodinium legiconveniens J.Schiller, 1955
156. Species Gymnodinium leptostauron Moestrup & Calado, 2018
157. Species Gymnodinium leptum R.E.Norris, 1961
158. Species Gymnodinium limitatum Skuja, 1956
159. Species Gymnodinium limneticum Woloszynska, 1936
160. Species Gymnodinium lineatum Kofoid & Swezy, 1921
161. Species Gymnodinium lineopunicum Kofoid & Swezy, 1921
162. Species Gymnodinium litoralis A.Reñé, 2011
163. Species Gymnodinium lividum Moestrup & Calado, 2018
164. Species Gymnodinium lobularis P.H.Campbell, 1973
165. Species Gymnodinium loburare P.H.Campbell, 1973
166. Species Gymnodinium lucidum D.Ballantine, 1964
167. Species Gymnodinium luteofaba Javornicky, 1965
168. Species Gymnodinium luteo-viride van Meel, 1969
169. Species Gymnodinium maguelonnense Biecheler, 1952
170. Species Gymnodinium mammosum van Meel, 1969
171. Species Gymnodinium marinum Kent, 1880
172. Species Gymnodinium massarti J.Schiller, 1932
173. Species Gymnodinium maximum Nordli, 1951
174. Species Gymnodinium mazuricum (Javornicky) Moestrup, 2018
175. Species Gymnodinium metum Hulburt, 1957
176. Species Gymnodinium microreticulatum C.J.S.Bolch, Negri & G.M.Hallegraeff, 1999
177. Species Gymnodinium minimum Lantzsch, 1914
178. Species Gymnodinium minor Lebour, 1917
179. Species Gymnodinium minus Lebour, 1917
180. Species Gymnodinium minutulum J.Larsen, 1994
181. Species Gymnodinium mirabile Penard, 1891
182. Species Gymnodinium mirum Utermöhl, 1923
183. Species Gymnodinium mitratum J.Schiller, 1933
184. Species Gymnodinium modestum Balech, 1976
185. Species Gymnodinium mucicola (W.Conrad) Moestrup, 2018
186. Species Gymnodinium multilineatum Kofoid & Swezy, 1921
187. Species Gymnodinium multistriatum Kofoid & Swezy, 1921
188. Species Gymnodinium najadeum J.Schiller, 1928
189. Species Gymnodinium nanum Schiller, 1928
190. Species Gymnodinium neapolitanum J.Schiller, 1928
191. Species Gymnodinium nolleri M.Ellegaard & Ø.Moestrup, 1999
192. Species Gymnodinium nucaceum Okolodkov, 1997
193. Species Gymnodinium obesum J.Schiller, 1932
194. Species Gymnodinium obliquum Okolodkov, 1997
195. Species Gymnodinium oceanicum Hasle, 1960
196. Species Gymnodinium ochraceum Kofoid, 1931
197. Species Gymnodinium octo J.Larsen, 1994
198. Species Gymnodinium oligoplacatum Skuja, 1956
199. Species Gymnodinium olivaceum Skvortsov, 1968
200. Species Gymnodinium oppressum Conrad, 1926
201. Species Gymnodinium opressum Conrad, 1926
202. Species Gymnodinium ostenfeldii J.Schiller, 1928
203. Species Gymnodinium ovatocapitatum Van Meel, 1969
204. Species Gymnodinium ovoideum Okolodkov, 1997
205. Species Gymnodinium ovulum Kofoid & Swezy, 1921
206. Species Gymnodinium pallidum Skuja, 1939
207. Species Gymnodinium palustre A.J.Schilling, 1891
208. Species Gymnodinium palustriforme Gert Hansen & Flaim, 2007
209. Species Gymnodinium paradoxiforme J.Schiller, 1955
210. Species Gymnodinium paradoxum A.J.Schilling, 1891
211. Species Gymnodinium partitum (Perty) Moestrup, 2018
212. Species Gymnodinium parvum J.Larsen, 1994
213. Species Gymnodinium patagonicum Balech, 1971
214. Species Gymnodinium paulseinii Schiller
215. Species Gymnodinium paulsenii J.Schiller, 1928
216. Species Gymnodinium pavlae Popovsky, 1990
217. Species Gymnodinium peisonis J.Schiller, 1955
218. Species Gymnodinium perplexum van Meel, 1969
219. Species Gymnodinium pingue van Meel, 1969
220. Species Gymnodinium placidum E.C.Herdman, 1922
221. Species Gymnodinium planctonicum Skvortsov, 1968
222. Species Gymnodinium planum (Fott) Moestrup, 2018
223. Species Gymnodinium plasticum N.Wang, Z.Luo, K.N.Mertens, F.M.G.McCarthy & H.Gu, 2017
224. Species Gymnodinium poculiferum Skuja, 1956
225. Species Gymnodinium polycomma J.Larsen, 1994
226. Species Gymnodinium posthiemale J.Schiller, 1955
227. Species Gymnodinium pratense (Baumeister) Moestrup, 2018
228. Species Gymnodinium prolatum J.Larsen, 1994
229. Species Gymnodinium pseudomirabile Gert Hansen & Flaim, 2007
230. Species Gymnodinium pulchrum J.Schiller, 1928
231. Species Gymnodinium pumilum J.Larsen, 1994
232. Species Gymnodinium punctatum Pouchet, 1887
233. Species Gymnodinium puniceum Kofoid & Swezy, 1921
234. Species Gymnodinium purpureum Skuja, 1956
235. Species Gymnodinium pusillum A.J.Schilling, 1891
236. Species Gymnodinium pygmaeum Lebour, 1925
237. Species Gymnodinium pyrenoidosum T.Horiguchi & Chihara, 1988
238. Species Gymnodinium radiatum Kofoid & Swezy, 1921
239. Species Gymnodinium rarum Litvinenko, 1963
240. Species Gymnodinium ravenescens Kofoid & Swezy, 1921
241. Species Gymnodinium regulare van Meel, 1969
242. Species Gymnodinium rete Schutt, 1895
243. Species Gymnodinium rhinophoron (Javornicky) Litvinenko, 1977
244. Species Gymnodinium rhomboides Schütt, 1895
245. Species Gymnodinium roseostigma P.H.Campbell, 1973
246. Species Gymnodinium rubricauda Kofoid & Swezy, 1921
247. Species Gymnodinium rubrocinctum Lebour, 1925
248. Species Gymnodinium rubrum Koifoid & Swezy, 1921
249. Species Gymnodinium ruttneri (J.Schiller) Moestrup, 2018
250. Species Gymnodinium saginatum T.M.Harris, 1940
251. Species Gymnodinium sanctipaulense (C.E.M.Bicudo & Skvortsov) Moestrup, 2018
252. Species Gymnodinium scaphium van Meel, 1969
253. Species Gymnodinium schaefferi S.Morris, 1937
254. Species Gymnodinium schilleri (Woloszynska) Moestrup, 2018
255. Species Gymnodinium schuettii J.Schiller, 1955
256. Species Gymnodinium scopulosum Kofoid & Swezy, 1921
257. Species Gymnodinium semidivisum J.Schiller, 1928
258. Species Gymnodinium servatum W.Busch, 1927
259. Species Gymnodinium simile Skuja, 1956
260. Species Gymnodinium sinuatum Skvortsov, 1968
261. Species Gymnodinium situla Kofoid & Swezy, 1921
262. Species Gymnodinium skvortzovii J.Schiller, 1933
263. Species Gymnodinium smaydae N.S.Kang, H.J.Jeong & Ø. Moestrup., 2014
264. Species Gymnodinium soyai Hada, 1970
265. Species Gymnodinium sphaericum (Calkins) Kofoid & Swezy, 1921
266. Species Gymnodinium sphaeroideum Kofoid, 1931
267. Species Gymnodinium sphagnicola (W.Conrad) Moestrup & Calado, 2018
268. Species Gymnodinium spirodinioides Moestrup & Calado, 2018
269. Species Gymnodinium stellatum Hulburt, 1957
270. Species Gymnodinium striassimum Hulbert
271. Species Gymnodinium subroseum P.H.Campbell, 1973
272. Species Gymnodinium subrufescens G.W.Martin, 1929
273. Species Gymnodinium suffuscum van Meel, 1969
274. Species Gymnodinium sulcatum Kofoid & Swezy, 1921
275. Species Gymnodinium telma van Meel, 1969
276. Species Gymnodinium terrum Baumeister, 1943
277. Species Gymnodinium thomasii Christen, 1959
278. Species Gymnodinium thompsonii Kiselev ex Moestrup & Calado, 1954
279. Species Gymnodinium titubans Christen, 1958
280. Species Gymnodinium translucens Kofoid & Swezy, 1921
281. Species Gymnodinium translucens P.H.Campbell, 1973
282. Species Gymnodinium trapeziforme Attaran-Fariman & Bolch, 2007
283. Species Gymnodinium triangularis Lebour, 1917
284. Species Gymnodinium triceratium Skuja, 1939
285. Species Gymnodinium tridentatum J.Schiller, 1933
286. Species Gymnodinium tylotum Mapletoft, M.Montgomery, J.Waters & P.Wells, 1966
287. Species Gymnodinium uberrimum (G.J.Allman) Kofoid & Swezy, 1921
288. Species Gymnodinium undulatum Woloszynska, 1925
289. Species Gymnodinium valdecompressum P.H.Campbell, 1973
290. Species Gymnodinium variabile E.C.Herdman, 1924
291. Species Gymnodinium varians Maskell, 1888
292. Species Gymnodinium vas Van Meel, 1969
293. Species Gymnodinium venator Flo Jørgensen & Murray, 2004
294. Species Gymnodinium vernum Moestrup, 2018
295. Species Gymnodinium verruculosum P.H.Campbell, 1973
296. Species Gymnodinium vierae (Javornicky) Moestrup, 2018
297. Species Gymnodinium violescens Kofoid & Swezy, 1921
298. Species Gymnodinium virescens Wood, 1963
299. Species Gymnodinium viridaliut J.Schiller, 1955
300. Species Gymnodinium viridans van Meel, 1969
301. Species Gymnodinium viridescens Kofoid, 1931
302. Species Gymnodinium voukii J.Schiller, 1928
303. Species Gymnodinium waltzii Baumeister, 1957
304. Species Gymnodinium wawrikae J.Schiller, 1955
305. Species Gymnodinium wigrense Woloszynska, 1925
306. Species Gymnodinium wilczekii Pouchet, 1894
307. Species Gymnodinium wulffii J.Schiller, 1933
308. Species Gymnodinium absumens J.Schiller, 1955 accepted as Gymnodinium albulum Er.Lindemann, 1928
309. Species Gymnodinium achroum J.Schiller, 1955 accepted as Gymnodinium albulum Er.Lindemann, 1928
310. Species Gymnodinium acidotum Nygaard, 1950 accepted as Nusuttodinium acidotum (Nygaard) Y.Takano & T.Horiguchi, 2014 (synonym)
311. Species Gymnodinium acuminatum Christen, 1954 accepted as Biecheleria pseudopalustris (J.Schiller) Moestrup, K.Lindberg & Daugbjerg, 2009
312. Species Gymnodinium acutiusclum Okolodkov, 1997 accepted as Gymnodinium acutiusculum Okolodkov, 1997
313. Species Gymnodinium aeruginosum F.Stein, 1883 accepted as Nusuttodinium aeruginosum (F.Stein) Y.Takano & T.Horiguchi, 2014
314. Species Gymnodinium aesculum Baumeister, 1943 accepted as Biecheleria aesculus (Baumeister) Moestrup, 2018
315. Species Gymnodinium affine Dogiel, 1906 accepted as Chytriodinium affine (Dogiel) Chatton, 1920
316. Species Gymnodinium agile Kofoid & Swezy, 1921 accepted as Durinskia agilis (Kofoid & Swezy) Saburova, Chomérat & Hoppenrath, 2012 (synonym)
317. Species Gymnodinium agile Herdman, 1922 accepted as Herdmania litoralis J.D.Dodge, 1981 (synonym)
318. Species Gymnodinium alatum Litvienko, 1963 accepted as Tyrannodinium edax (A.J.Schilling) Calado, 2011 (synonym)
319. Species Gymnodinium amphidinioides Geitler, 1924 accepted as Nusuttodinium amphidinioides (Geitler) Y.Takano & T.Horiguchi, 2014 (synonym)
320. Species Gymnodinium archimedes Pouchet accepted as Gymnodinium archimedis Pouchet, 1883 accepted as Cochlodinium archimedes (Pouchet) Lemmermann, 1899 (misspelling)
321. Species Gymnodinium archimedis Pouchet, 1883 accepted as Cochlodinium archimedes (Pouchet) Lemmermann, 1899 (synonym)
322. Species Gymnodinium arenicolum Dragesco, 1965 accepted as Gymnodinium arenicola Dragesco, 1965
323. Species Gymnodinium asymmetricum Massart, 1920 accepted as Katodinium asymmetricum (Massart) A.R.Loeblich, III, 1965 (synonym)
324. Species Gymnodinium autumnale Christen, 1959 accepted as Gymnodinium leptostauron Moestrup & Calado, 2018 (synonym)
325. Species Gymnodinium autumnale Skvortsov, 1968 accepted as Nusuttodinium aeruginosum (F.Stein) Y.Takano & T.Horiguchi, 2014
326. Species Gymnodinium bei H.J.Spero, 1987 accepted as Pelagodinium bei (H.J.Spero) Siano, Montresor, Probert & Vargas, 2010 (deleted in Algaebase)
327. Species Gymnodinium bisetosum Lindemann, 1928 accepted as Cystodinium cornifax (A.J.Schilling) G.A.Klebs, 1912
328. Species Gymnodinium breve C.C.Davis, 1948 accepted as Karenia brevis (C.C.Davis) Gert Hansen & Moestrup, 2000 (basionym)
329. Species Gymnodinium brevis Davis, 1948 accepted as Karenia brevis (C.C.Davis) Gert Hansen & Moestrup, 2000 (synonym)
330. Species Gymnodinium brevisulcatum F.H.Chang, 1999 accepted as Karenia brevisulcata (F.H.Chang) Gert Hansen & Moestrup, 2000 (basionym)
331. Species Gymnodinium caerulescens J.Schiller, 1955 accepted as Nusuttodinium caerulescens (J.Schiller) Moestrup & Calado, 2018
332. Species Gymnodinium campaniforme Popovsky, 1971 accepted as Nusuttodinium campaniforme (Popovsky) Moestrup & Calado, 2018 (synonym)
333. Species Gymnodinium carinatum A.J.Schilling, 1891 accepted as Gymnodinium palustre A.J.Schilling, 1891 (synonym)
334. Species Gymnodinium cestocoetes R.H.Thompson, 1947 accepted as Biecheleria cestocoetes (R.H.Thompson) Moestrup, 2018 (synonym)
335. Species Gymnodinium chlorophorum Elbrächter & Schnepf, 1996 accepted as Lepidodinium chlorophorum (M.Elbrächter & E.Schnepf) Gert Hansen, Botes & Salas, 2007 (synonym)
336. Species Gymnodinium cladochromum J. Larsen, 1996 accepted as Takayama cladochroma (J.Larsen) M.F.Salas, Bolch & Hallegraeff, 2003 (basionym)
337. 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)
338. Species Gymnodinium coeruleum Antipova, 1955 accepted as Gyrodinium helveticum (Penard) Y.Takano & T.Horiguchi, 2004 (synonym)
339. Species Gymnodinium conicum Kofoid & Swezy, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (synonym)
340. Species Gymnodinium constrictum Schütt accepted as Cochlodinium constrictum (Schütt) Lemmennann, 1899 (synonym)
341. Species Gymnodinium cornutum Schütt, 1895 accepted as Gyrodinium schuettii (Lemmermann) Kofoid & Swezy, 1921 (synonym)
342. Species Gymnodinium coronatum Woloszynska, 1917 accepted as Tovellia coronata (Woloszynska) Moestrup, K.Lindberg & Daugbjerg, 2005 (synonym)
343. Species Gymnodinium crassum Pouchet, 1885 accepted as Gyrodinium crassum (Pouchet) Kofoid & Swezy, 1921 (synonym)
344. Species Gymnodinium cruciatum R.H.Thompson, 1950 accepted as Gymnodinium thompsonii Kiselev ex Moestrup & Calado, 1954 (synonym)
345. Species Gymnodinium cyaneum H.J.Hu, M.Yu & X.Zhang, 1980 accepted as Nusuttodinium eucyaneum (H.J.Hu) Moestrup & Calado, 2018 (synonym)
346. Species Gymnodinium cyaneum J.Schiller, 1955 accepted as Nusuttodinium cyaneum (J.Schiller) Moestrup & Calado, 2018
347. Species Gymnodinium dimorphe Baumeister, 1938 accepted as Cystodinium dimorphe (Baumeister) Huber-Pestalozzi, 1950 (synonym)
348. Species Gymnodinium dodgei R.Sarma & Y.S.R.K.Shyam, 1974 accepted as Tovellia dodgei (R.Sarma & Y.S.R.K.Shyam) K.N.Mertens & H.Gu, 2016
349. Species Gymnodinium excavatum Nygaard, 1945 accepted as Biecheleria pseudopalustris (J.Schiller) Moestrup, K.Lindberg & Daugbjerg, 2009
350. Species Gymnodinium fissum Levander, 1894 accepted as Levanderina fissa (Levander) Moestrup, Hakanen, Gert Hansen, Daugbjerg & M.Ellegaard, 2014 (basionym)
351. Species Gymnodinium frigidum Balech, 1965 accepted as Gymnodinium antarcticum A.E.Thessen, D.J.Patterson & S.A.Murray, 2012
352. Species Gymnodinium frigidum Skvortsov, 1968 accepted as Gymnodinium chinensis A.E.Thessen, D.J.Patterson & S.A.Murray, 2012
353. Species Gymnodinium fucorum Kuster, 1908 accepted as Crypthecodinium cohnii (Seligo) Javornicky, 1962 (synonym)
354. Species Gymnodinium fungiforme Anisimova, 1926 accepted as Speroidium fungiforme (Anisimova) Moestrup & Calado, 2018
355. Species Gymnodinium galatheanum Braarud, 1957 accepted as Karlodinium veneficum (D.Ballantine) J.Larsen, 2000 (synonym)
356. Species Gymnodinium geminatum Schütt, 1895 accepted as Cochlodinium geminatum (Schütt) Schütt, 1896 accepted as Polykrikos geminatus (Schütt) D.Qiu & S.Lin, 2013 (synonym)
357. Species Gymnodinium gessneri (Baumeister) Bourrelly, 1970 accepted as Gymnodinium fuscum (Ehrenberg) F.Stein, 1878
358. Species Gymnodinium glandula E.C.Herdman, 1924 accepted as Aduncodinium glandula (E.C.Herdman) N.S.Kang, H.J.Jeong & Moestrup, 2015
359. Species Gymnodinium glaucum Conrad, 1926 accepted as Amphidinium conradii J.Schiller, 1932 (synonym)
360. Species Gymnodinium gracile Bergh, 1882 accepted as Balechina gracilis (Bergh) F.Gómez, Artigas & Gast, 2021
361. Species Gymnodinium halophilum Biecheler, 1952 accepted as Biecheleria halophila (Biecheler) Moestrup, Lindberg & Daugbjerg, 2009
362. Species Gymnodinium helix Pouchet, 1887 accepted as Cochlodinium helix Lemmermann,1899 (synonym)
363. Species Gymnodinium helix Schütt, 1895 accepted as Cochlodinium helix Lemmermann,1899 (synonym)
364. Species Gymnodinium helveticum Penard, 1891 accepted as Gyrodinium helveticum (Penard) Y.Takano & T.Horiguchi, 2004
365. Species Gymnodinium hiemale Woloszynska, 1917 accepted as Jadwigia hiemalis (Woloszynska) Moestrup, 2018
366. Species Gymnodinium hiemale (J.Schiller) Popovsky, 1990 accepted as Nusuttodinium hiemale (J.Schiller) Moestrup & Calado, 2018
367. Species Gymnodinium hiemale Skvortsov, 1927 accepted as Jadwigia neglecta (A.J.Schilling) Moestrup, 2018 (synonym)
368. Species Gymnodinium impar T.M.Harris, 1939 accepted as Gymnodinium triceratium Skuja, 1939 (synonym)
369. Species Gymnodinium indicum R.Shyam & Y.S.R.K.Sarma, 1980 accepted as Nusuttodinium indicum (R.Shyam & Y.S.R.K.Sarma) Moestrup & Calado, 2018
370. Species Gymnodinium instriatum (Freudenthal & J.J.Lee) D.W.Coats, 2002 accepted as Levanderina fissa (Levander) Moestrup, Hakanen, Gert Hansen, Daugbjerg & M.Ellegaard, 2014
371. Species Gymnodinium irregulare Christen, 1959 accepted as Gymnodinium uberrimum (G.J.Allman) Kofoid & Swezy, 1921
372. Species Gymnodinium klebsii Er.Lindemann, 1928 accepted as Hypnodinium sphaericum G.A.Klebs, 1912
373. Species Gymnodinium knollii J.Schiller, 1955 accepted as Gymnodinium albulum Er.Lindemann, 1928
374. Species Gymnodinium lebourae Pavillard, 1921 accepted as Gymnodinium lebouriae Pavillard, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968 (misspelling)
375. Species Gymnodinium lebouriae Pavillard, 1921 accepted as Spatulodinium pseudonoctiluca (Pouchet) J.Cachon & M.Cachon, 1968
376. Species Gymnodinium leopoliense Woloszynska, 1917 accepted as Tovellia leopoliensis (Woloszynska) Moestrup, K.Lindberg & Daugbjerg, 2005 (synonym)
377. 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)
378. Species Gymnodinium limneticum J.B.Lackey, 1936 accepted as Nusuttodinium limneticum Moestrup & Calado, 2018
379. Species Gymnodinium linucheae R.V.Trench & L.-V.Thinh, 1995 accepted as Symbiodinium linucheae (Trench & Thinh) T.C.LaJenesse, 2001
380. Species Gymnodinium lira Kofoid & Swezy, 1921 accepted as Cucumeridinium lira (Kofoid & Swezy) F.Gómez, P. López-García, H.Takayama & D.Moreira, 2015
381. Species Gymnodinium lohmannii Paulsen, 1908 accepted as Gymnodinium gracile Bergh, 1882 accepted as Balechina gracilis (Bergh) F.Gómez, Artigas & Gast, 2021 (synonym)
382. Species Gymnodinium lunula Schütt, 1895 accepted as Pyrocystis lunula (Schütt) Schütt, 1896 (synonym)
383. Species Gymnodinium luridum Deflandre, 1938 † accepted as Tubotuberella lurida (Deflandre) Davies, 1983 †
384. Species Gymnodinium macronucleum Litvinenko, 1963 accepted as Gymnodinium lantzschii Utermöhl, 1925 (synonym)
385. Species Gymnodinium manchuriense Thessen, D.J.Patterson & Shauna Murray, 2012 accepted as Nusuttodinium aeruginosum (F.Stein) Y.Takano & T.Horiguchi, 2014
386. Species Gymnodinium marylandicum R.H.Thompson, 1947 accepted as Borghiella marylandica (R.H.Thompson) Moestrup, 2018
387. Species Gymnodinium microadriaticum (Freudenthal) F.J.R.Taylor, 1971 accepted as Symbiodinium microadriaticum LaJeunesse, 2017 (synonym)
388. Species Gymnodinium micrum (B.Leadbeater & J.D.Dodge) Loeblich III, 1970 accepted as Karlodinium veneficum (D.Ballantine) J.Larsen, 2000 (synonym)
389. Species Gymnodinium mikimotoi Miyake & Kominami ex Oda, 1935 accepted as Karenia mikimotoi (Miyake & Kominami ex Oda) Gert Hansen & Moestrup, 2000 (synonym)
390. Species Gymnodinium minimum Klebs, 1912 accepted as Gymnodinium varians Maskell, 1888 (synonym)
391. Species Gymnodinium minutum Lebour, 1925 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995 (synonym)
392. Species Gymnodinium monadicum (Deising) W.S.Kent, 1881 accepted as Gymnodinium partitum (Perty) Moestrup, 2018
393. Species Gymnodinium musei Danysz, 1886 accepted as Opisthoaulax musei (Danysz) Calado, 2011 (synonym)
394. Species Gymnodinium musei Danysz, 1887 accepted as Katodinium musei (Danysz) Fott, 1957 accepted as Opisthoaulax musei (Danysz) Calado, 2011 (synonym)
395. 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
396. Species Gymnodinium nagasakiense H.Takayama & M.Adachi, 1985 accepted as Karenia mikimotoi (Miyake & Kominami ex Oda) Gert Hansen & Moestrup, 2000 (synonym)
397. Species Gymnodinium natalense T.Horiguchi & R.N.Pienaar, 1994 accepted as Ansanella natalensis (T.Horiguchi & R.N.Pienaar) Dawut, Sym & T.Horiguchi, 2018
398. Species Gymnodinium neglectum (A.J.Schilling) Er.Lindemann, 1928 accepted as Jadwigia neglecta (A.J.Schilling) Moestrup, 2018 (synonym)
399. Species Gymnodinium nelsonii G.W.Martin, 1929 accepted as Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000 (synonym)
400. Species Gymnodinium novaculosum Baumeister, 1939 accepted as Cystodinium cornifax (A.J.Schilling) G.A.Klebs, 1912
401. Species Gymnodinium nygaardii Christen, 1958 accepted as Tovellia nygaardii Moestrup, K.Lindberg & Daugberg, 2008 (synonym)
402. Species Gymnodinium opimum Schütt, 1895 accepted as Gyrodinium opimum (Schütt) Lebour, 1925 (synonym)
403. Species Gymnodinium ordinatum Skuja, 1939 accepted as Biecheleria ordinata (Skuja) Moestrup, 2018 (synonym)
404. Species Gymnodinium ovato-capitatum van Meel, 1969 accepted as Gymnodinium ovatocapitatum Van Meel, 1969
405. Species Gymnodinium ovatum Gourret accepted as Gyrodinium ovatum (Gourret) Kofoid & Swezy, 1921 (synonym)
406. Species Gymnodinium ovum Schütt accepted as Gyrodinium ovum (Schütt) Kofoid & Swezy, 1921 (synonym)
407. Species Gymnodinium pachydermatum Kofoid & Swezy, 1921 (unaccepted)
408. Species Gymnodinium parasiticum Dogiel, 1906 (unaccepted)
409. Species Gymnodinium parvulum Schütt, 1895 (unaccepted)
410. Species Gymnodinium pascheri (Suchlandt) Schiller, 1954 (unaccepted, synonym)
411. Species Gymnodinium p-dohrnii Wawrick, 1956 (unaccepted, synonym)
412. Species Gymnodinium pellucidum Wulff, 1916 (unaccepted, synonym)
413. Species Gymnodinium pellucidum (E.C.Herdman) Flø Jørgensen & Shauna Murray, 2004 (unaccepted, synonym)
414. Species Gymnodinium pigmentosum (Dodge) Loeblich, 1970 (unaccepted, synonym)
415. Species Gymnodinium pirum Schütt, 1895 (unaccepted, synonym)
416. Species Gymnodinium polonicum (Woloszynska) Woloszynska, 1917 (unaccepted, synonym)
417. Species Gymnodinium polyphemus Pouchet (unaccepted, synonym)
418. Species Gymnodinium pouchetii Lemmermann, 1899 (unaccepted)
419. Species Gymnodinium profundum J.Schiller, 1932 (unaccepted, synonym)
420. Species Gymnodinium pseudonoctiluca Pouchet, 1885 (unaccepted, synonym)
421. Species Gymnodinium pseudopalustre J.Schiller, 1932 (unaccepted, synonym)
422. Species Gymnodinium pulchellum J.Larsen, 1994 (unaccepted, synonym)
423. Species Gymnodinium pulvisculus (Ehrenberg) Pouchet, 1885 (unaccepted, synonym)
424. Species Gymnodinium pyrocystis Jørgensen, 1912 (unaccepted, synonym)
425. Species Gymnodinium quadrilobatum T.Horiguchi & R.N.Pienaar, 1994 (unaccepted > superseded combination)
426. Species Gymnodinium roseolum (Schmarda) Stein, 1878 (unaccepted)
427. Species Gymnodinium roseum Lohmann, 1908 (unaccepted, synonym)
428. Species Gymnodinium roseum Dogiel, 1906 (unaccepted)
429. Species Gymnodinium rotundatum Klebs, 1912 (unaccepted, basionym)
430. Species Gymnodinium rufescens (Penard) Lemmermann, 1910 (unaccepted, synonym)
431. Species Gymnodinium sangineum Hirasaka, 1924 (unaccepted)
432. Species Gymnodinium sanguineum K.Hirasaka, 1922 (unaccepted, synonym)
433. Species Gymnodinium simplex (Lohmann) Kofoid & Swezy, 1921 (unaccepted)
434. Species Gymnodinium spirale Bergh, 1882 (unaccepted, synonym)
435. Species Gymnodinium splendens Lebour, 1925 (unaccepted, basionym)
436. Species Gymnodinium stagnale J.Schiller, 1955 (unaccepted, synonym)
437. Species Gymnodinium steinii (G.A.Klebs) Lindemann, 1928 (unaccepted)
438. Species Gymnodinium stigmaticum Er.Lindemann, 1928 (unaccepted)
439. Species Gymnodinium strangulatum F.Schütt, 1895 (unaccepted, synonym)
440. Species Gymnodinium striatissimum E.M.Hulburt, 1957 (unaccepted, synonym)
441. Species Gymnodinium submontanum J.Schiller, 1955 (unaccepted)
442. Species Gymnodinium sugashimanii J.Cachon, H.Saton, M.Cachon & S.Sato, 1989 (unaccepted, synonym)
443. Species Gymnodinium tatricum Wołoszyńska, 1919 (unaccepted)
444. Species Gymnodinium tenuissimum Lauterborn, 1894 (unaccepted)
445. Species Gymnodinium teredo Pouchet, 1885 (unaccepted, synonym)
446. Species Gymnodinium tintinnicola Lohmann, 1908 (unaccepted)
447. Species Gymnodinium uncatenatum (Hulburt) Hallegraeff, 2002 (unaccepted, synonym)
448. Species Gymnodinium unicorne (G.A.Klebs) Er.Lindemann, 1928 (unaccepted, synonym)
449. Species Gymnodinium veneficum D.Ballantine, 1956 (unaccepted, synonym)
450. Species Gymnodinium veris Er.Lindemann, 1925 (unaccepted, synonym)
451. Species Gymnodinium vernale Skvortsov, 1968 (unaccepted)
452. Species Gymnodinium vestifici Schütt, 1895 (unaccepted)
453. Species Gymnodinium viride Lebour, 1917 (unaccepted, synonym)
454. Species Gymnodinium viride Penard, 1891 (unaccepted)
455. Species Gymnodinium viridis Lebour, 1917 (unaccepted, synonym)
456. Species Gymnodinium vitiligo D.Ballantine, 1956 (unaccepted, synonym)
457. Species Gymnodinium vorticella F.Stein, 1883 (unaccepted, synonym)
458. Species Gymnodinium woloszynskae Pascher, 1923 (unaccepted, synonym)
459. Species Gymnodinium zachariasii Lemmermann, 1900 (unaccepted)
460. Species Gymnodinium aestivale Skvortsov, 1968 (uncertain)
461. Species Gymnodinium deformabile J.Schiller, 1955 (uncertain)
462. Species Gymnodinium elongatum (J.Schiller) Moestrup & Calado, 2018 (uncertain, uncertain taxonomic status subjected to verification)
463. Species Gymnodinium excavatum Van Meel, 1969 (uncertain)
464. Species Gymnodinium falcatum V.G.Madhav & B.Kondalarao, 2004 (uncertain > unassessed)
465. Species Gymnodinium glaucum J.Schiller, 1955 (uncertain)
466. Species Gymnodinium lens Fott, 1957 (uncertain, synonym)
467. Species Gymnodinium meervallii Redeke, 1919 (uncertain)
468. Species Gymnodinium radiatum (Javornicky) Moestrup & Calado, 2018 (uncertain, uncertain taxonomic status subjected to verification)

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