1. Species Amphidinium aculeatum Daday, 1888
2. Species Amphidinium acutissimum J.Schiller, 1932
3. Species Amphidinium acutum Lohmann, 1920
4. Species Amphidinium adriaticum Molinari & Guiry, 2021
5. Species Amphidinium akanensis Hada, 1959
6. Species Amphidinium aloxalocium Norris, 1961
7. Species Amphidinium asymmetricum Kofoid & Swezy, 1921
8. Species Amphidinium aureum Böhm, 1976
9. Species Amphidinium bipes Herdman, 1924
10. Species Amphidinium boekhoutensis Caljon, 1983
11. Species Amphidinium bulbosum Cleve-Euler, 1918
12. Species Amphidinium caerulescens J.Schiller, 1955
13. Species Amphidinium carbunculus Conrad & Kufferath, 1954
14. Species Amphidinium carota Cleve-Euler, 1918
15. Species Amphidinium carterae Hulburt, 1957
16. Species Amphidinium celestinum Conrad & Kufferath, 1954
17. Species Amphidinium coeruleum W.Conrad, 1939
18. Species Amphidinium compressum (Calkins) Taylor & Baillie, 1974
19. Species Amphidinium conradii J.Schiller, 1932
20. Species Amphidinium conus J.Schiller, 1928
21. Species Amphidinium corallinum Conrad & Kufferath, 1954
22. Species Amphidinium corpulentum Kofoid & Swezy, 1921
23. Species Amphidinium crassum Lohmann, 1908
24. Species Amphidinium cristatum Ballantine, 1964
25. Species Amphidinium cucurbita Kofoid & Swezy, 1921
26. Species Amphidinium cucurbitella Kofoid & Swezy, 1921
27. Species Amphidinium cupulatisquama M.Tamura & T.Horiguchi, 2009
28. Species Amphidinium curvatum J.Schiller, 1928
29. Species Amphidinium cyaneoturbo Conrad & Kufferath, 1954
30. Species Amphidinium dentatum Kofoid & Swezy, 1921
31. Species Amphidinium diploconus Cleve-Euler, 1918
32. Species Amphidinium discoidale (Diesing) Kofoid & Swezy, 1921
33. Species Amphidinium discoidalis (Diesing) Kofoid & Swezy
34. Species Amphidinium dubium Conrad & Kufferath, 1954
35. Species Amphidinium eilatiensis J.J.Lee
36. Species Amphidinium elongatum Cleve-Euler, 1918
37. Species Amphidinium emarginatum (Diesing) Kofoid & Swezy, 1921
38. Species Amphidinium emarginaum (Deising) Kofoid & Swezy, 1921
39. Species Amphidinium fastigium Kofoid & Swezy, 1921
40. Species Amphidinium fijiense Karafas & C.R.Tomas, 2017
41. Species Amphidinium filum Böhm, 1976
42. Species Amphidinium flagellans J.Schiller, 1928
43. Species Amphidinium flexum Herdman, 1923
44. Species Amphidinium fusiforme G.W.Martin, 1928
45. Species Amphidinium galbanum Kofoid & Swezy, 1921
46. Species Amphidinium gibbosum (L.Maranda & Y.Shimizu) Flø Jørgensen & Shauna Murray, 2004
47. Species Amphidinium glaucum W.Conrad, 1926
48. Species Amphidinium globosum Schröder, 1911
49. Species Amphidinium herdmanii Kofoid & Swezy, 1921
50. Species Amphidinium incoloratum P.H.Campbell, 1973
51. Species Amphidinium inflatum Kofoid, 1931
52. Species Amphidinium kesselitzii Schiller
53. Species Amphidinium klebsii Kofoid & Swezy, 1921
54. Species Amphidinium lanceolatum Schröder, 1911
55. Species Amphidinium lilloense Conrad & Kufferath, 1954
56. Species Amphidinium lissae J.Schiller, 1928
57. Species Amphidinium longum Lohmann, 1908
58. Species Amphidinium machapungarum P.H.Campbell, 1973
59. Species Amphidinium macrocephalum Conrad & Kufferath
60. Species Amphidinium magnum Karafas & C.R.Tomas, 2017
61. Species Amphidinium mammillatum Conrad & Kufferath, 1954
62. Species Amphidinium manannini Herdman, 1924
63. Species Amphidinium mananninii Herdman, 1924
64. Species Amphidinium massartii Biecheler, 1952
65. Species Amphidinium mitratum Vozzhennikova, 1967 †
66. Species Amphidinium mootonorum Shauna Murray & D.J.Patterson, 2002
67. Species Amphidinium obliquum Schiller, 1955
68. Species Amphidinium oceanicum Lohmann, 1920
69. Species Amphidinium operculatum Claparède & Lachmann, 1859
70. Species Amphidinium ornithocephalum W.Conrad, 1939
71. Species Amphidinium ovum E.C.Herdman, 1924
72. Species Amphidinium pacificum Kofoid & Swezy
73. Species Amphidinium pagoense Phua & Wakeman, 2022
74. Species Amphidinium paucianulatum Karafas & C.R.Tomas, 2017
75. Species Amphidinium pelagicum Lebour, 1925
76. Species Amphidinium pellucidun E.C.Herdman, 1922
77. Species Amphidinium prismaticum (Conrad) J.Schiller, 1932
78. Species Amphidinium psammophilum Conrad & Kufferath, 1954
79. Species Amphidinium pseudomassartii Karafas & C.R.Tomas, 2017
80. Species Amphidinium psittacus Larsen, 1985
81. Species Amphidinium purpureum Conrad & Kufferath, 1954
82. Species Amphidinium rhynchocephalum Anisimova, 1926
83. Species Amphidinium roseolum (Schmarda) J.Schiller, 1932
84. Species Amphidinium salinum Ruinen, 1938
85. Species Amphidinium schroederi J.Schiller, 1928
86. Species Amphidinium scissum Koifoid & Swezy, 1921
87. Species Amphidinium sphenoides Wulff, 1919
88. Species Amphidinium stallatum Conrad & Kufferath, 1954
89. Species Amphidinium steinii (Lemmermann) Kofoid & Swezy, 1921
90. Species Amphidinium stellatum Conrad & Kufferath, 1954
91. Species Amphidinium stenii
92. Species Amphidinium stigmatum J.Schiller, 1928
93. Species Amphidinium stirisquamtum Z.Luo, Na Wang & H.Gu, 2021
94. Species Amphidinium sulcatum Kofferath
95. Species Amphidinium theodorei C.R.Tomas & Karafas, 2017
96. Species Amphidinium thermaeum Dolapsakis & Economou-Amilli, 2009
97. Species Amphidinium tomasii Karafas, 2017
98. Species Amphidinium tortum Conrad & Kufferath, 1954
99. Species Amphidinium trochodinoides Conrad & Kufferath, 1954
100. Species Amphidinium trulla Shauna Murray, Rhodes & Flø Jørgensen, 2004
101. Species Amphidinium truncatum Kofoid & Swezy, 1921
102. Species Amphidinium turbo Kofoid & Swezy, 1921
103. Species Amphidinium uduigamense Phua & Wakeman, 2022
104. Species Amphidinium vigrense Wołoszyńska, 1925
105. Species Amphidinium vitreum E.C.Herdman, 1924
106. Species Amphidinium vittatum Conrad & Kufferath, 1954
107. Species Amphidinium wigrense Woloszynska, 1925
108. Species Amphidinium yuroogurrum Shauna Murray & D.J.Patterson, 2002
109. Species Amphidinium aculeatum Schröder, 1911 accepted as Amphidinium adriaticum Molinari & Guiry, 2021
110. Species Amphidinium acutum J.Schiller, 1928 accepted as Amphidinium acutissimum J.Schiller, 1932
111. Species Amphidinium aeschrum T.M.Harris, 1940 accepted as Gymnodinium aeschrum (T.H.Harris) Moestrup
112. Species Amphidinium amphidinioides (Geitler) J.Schiller, 1932 accepted as Nusuttodinium amphidinioides (Geitler) Y.Takano & T.Horiguchi, 2014
113. Species Amphidinium bidentatum J.Schiller, 1955 accepted as Nusuttodinium bidentatum (J.Schiller) Moestrup & Calado, 2018
114. Species Amphidinium boekhoutnesis Caljon, 1983 accepted as Amphidinium boekhoutensis Caljon, 1983 (misspelling)
115. Species Amphidinium boggayum Shauna Murray & D.J.Patterson, 2002 accepted as Bindiferia boggaya (Sh.Murray & D.J.Patterson) Sh.Murray & Hoppenrath, 2021
116. Species Amphidinium bourrellyi Wawrik, 1983 accepted as Nusuttodinium amphidinioides (Geitler) Y.Takano & T.Horiguchi, 2014 (synonym)
117. Species Amphidinium britannicum (Herdman) Lebour, 1925 accepted as Togula britannica (Herdman) Flø Jørgensen, Shauna Murray & Daugbjerg, 2004 (synonym)
118. Species Amphidinium chattonii (Hovasse) D.L.Taylor, 1971 accepted as Scrippsiella chattonii (Hovasse) A.T.Banaszak, R.Iglesias-Prieto & R.K.Trench, 1993
119. Species Amphidinium coprosum Baumeister, 1943 accepted as Nusuttodinium amphidinioides (Geitler) Y.Takano & T.Horiguchi, 2014
120. Species Amphidinium corrugatum J.Larsen & D.J.Patterson, 1990 accepted as Testudodinium corrugatum (Larsen & D.J.Patterson) T.Horiguchi, TM.amura & A. Yamaguchi, 2012 (synonym)
121. Species Amphidinium cryophilum G.J.Wedemayer, L.W.Wilcox & L.E.Graham, 1982 accepted as Gymnodinium cryophilum (G.J.Wedemayer, L.W.Wilcox & L.E.Graham) Gert Hansen & Moestrup, 2000 (synonym)
122. Species Amphidinium elegans Grell & Wohlfarth-Bottermann, 1957 accepted as Amphidinium operculatum Claparède & Lachmann, 1859 (synonym)
123. Species Amphidinium elenkinii Skvortsov, 1925 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005
124. Species Amphidinium eludens Lebour, 1925 accepted as Adenoides eludens (Herdman) Balech, 1956 (synonym)
125. Species Amphidinium eludens Schiller, 1933 accepted as Adenoides eludens (Herdman) Balech, 1956 (synonym)
126. Species Amphidinium eludens Herdman, 1922 accepted as Adenoides eludens (Herdman) Balech, 1956 (synonym)
127. Species Amphidinium eucephalum J.Schiller, 1955 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
128. Species Amphidinium extensum Wulff, 1919 accepted as Kapelodinium vestifici (Schütt) Boutrup, Moestrup & Daugbjerg, 2016
129. Species Amphidinium geitleri Huber-Pestalozzi, 1950 accepted as Nusuttodinium amphidinioides (Geitler) Y.Takano & T.Horiguchi, 2014 (synonym)
130. Species Amphidinium glabrum M.Hoppenrath & Y.B.Okolodkov, 2000 accepted as Apicoporus glaber (M.Hoppenrath & Okolodkov) S.F.Sparmann, B.S.Leander & M.Hoppenrath, 2008
131. Species Amphidinium gyrinum T.M.Harris, 1940 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
132. Species Amphidinium hoefleri Schiller & Diskus, 1955 accepted as Amphidinium massartii Biecheler, 1952
133. Species Amphidinium hofleri Schiller & Diskus, 1955 accepted as Amphidinium massartii Biecheler, 1952 (synonym)
134. Species Amphidinium hyalinum Entz, 1930 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
135. Species Amphidinium inconstans J.Schiller, 1955 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
136. Species Amphidinium kesslitzii J.Schiller, 1928 accepted as Gymnodinium kesslitzii (J.Schiller) Moestrup, 2018
137. Species Amphidinium klebsii N.Carter, 1937 accepted as Amphidinium carterae Hulburt, 1957 (synonym)
138. Species Amphidinium kofoidi Lebour, 1925 accepted as Adenoides kofoidii (Herdman) J.D.Dodge, 1982 accepted as Pseudadenoides kofoidii (Herdman) F.Gómez, R. Onuma, Artigas & Horiguchi, 2015 (synonym)
139. Species Amphidinium kofoidi Schiller, 1933 accepted as Adenoides kofoidii (Herdman) J.D.Dodge, 1982 accepted as Pseudadenoides kofoidii (Herdman) F.Gómez, R. Onuma, Artigas & Horiguchi, 2015 (synonym)
140. Species Amphidinium kofoidii Lebour, 1925 accepted as Pseudadenoides kofoidii (Herdman) F.Gómez, R. Onuma, Artigas & Horiguchi, 2015 (synonym)
141. Species Amphidinium kofoidii Schiller, 1933 accepted as Pseudadenoides kofoidii (Herdman) F.Gómez, R. Onuma, Artigas & Horiguchi, 2015
142. Species Amphidinium kofoidii Herdman, 1922 accepted as Pseudadenoides kofoidii (Herdman) F.Gómez, R. Onuma, Artigas & Horiguchi, 2015
143. Species Amphidinium lacunarum Skuja, 1964 accepted as Nusuttodinium lacunarum (Skuja) Moestrup & Calado, 2018
144. Species Amphidinium lacustre F.Stein, 1883 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
145. Species Amphidinium lacustriforme J.Schiller, 1928 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
146. Species Amphidinium larvale Lindemann, 1928 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005
147. Species Amphidinium latum Lebour, 1925 accepted as Nusuttodinium latum (Lebour) Y.Takano & T.Horiguchi, 2014
148. Species Amphidinium lohammarii Skuja, 1956 accepted as Prosoaulax multiplex (J.Schiller) Calado & Moestrup, 2005
149. Species Amphidinium microcephalum R.E.Norris accepted as Amphidinium carterae Hulburt, 1957 (synonym)
150. Species Amphidinium mucicola W.Conrad, 1941 accepted as Gymnodinium mucicola (W.Conrad) Moestrup, 2018
151. Species Amphidinium multiplex J.Schiller, 1955 accepted as Prosoaulax multiplex (J.Schiller) Calado & Moestrup, 2005 (synonym)
152. Species Amphidinium obrae Er.Lindemann, 1919 accepted as Lissaiella obrae (Er.Lindemann) Er.Lindemann, 1928
153. Species Amphidinium oculatum J.Schiller, 1955 accepted as Nusuttodinium oculatum (J.Schiller) Moestrup, 2018
154. Species Amphidinium operculatum auct. accepted as Amphidinium herdmanii Kofoid & Swezy, 1921 (Synonym)
155. Species Amphidinium operculatum Herdman, 1911 accepted as Amphidinium herdmanii Kofoid & Swezy, 1921 (synonym)
156. Species Amphidinium pellucidum Redeke, 1935 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995 (synonym)
157. Species Amphidinium pellucidum E.C.Herdman, 1922 accepted as Gymnodinium venator Flo Jørgensen & Murray, 2004 (synonym)
158. Species Amphidinium phaeocysticola Lebour, 1925 accepted as Amphidinium crassum Lohmann, 1908 (synonym)
159. Species Amphidinium phthartum Skuja, 1939 accepted as Nusuttodinium phthartum (Skuja) Moestrup & Calado, 2018
160. Species Amphidinium poecilochroum J.Larsen, 1985 accepted as Nusuttodinium poecilochroum (J.Larsen) Y.Takano & T.Horiguchi, 2014
161. Species Amphidinium pseudogalbanum Conrad & Kufferath, 1954 accepted as Amphidinium mammillatum Conrad & Kufferath, 1954 (synonym)
162. Species Amphidinium radiatum Javornicky, 1957 accepted as Gymnodinium radiatum (Javornicky) Moestrup & Calado, 2018 (synonym)
163. Species Amphidinium redekei Conrad & Kufferath, 1954 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995 (synonym)
164. Species Amphidinium rostratum Proshkina-Lavrenko, 1945 accepted as Amphidinium steinii (Lemmermann) Kofoid & Swezy, 1921 (synonym)
165. Species Amphidinium rotundatum Lohmann, 1908 accepted as Heterocapsa rotundata (Lohmann) Gert Hansen, 1995 (synonym)
166. Species Amphidinium ruttneri J.Schiller, 1955 accepted as Gymnodinium ruttneri (J.Schiller) Moestrup, 2018
167. Species Amphidinium sauerzopfii J.Schiller, 1955 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
168. Species Amphidinium schroderi Schiller, 1928 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005
169. Species Amphidinium schroederii Schiller, 1928 accepted as Amphidinium schroederi J.Schiller, 1928
170. Species Amphidinium scissoides Lebour, 1925 accepted as Amphidinium scissum Koifoid & Swezy, 1921 (synonym)
171. Species Amphidinium semilunatum Lebour, 1925 accepted as Thecadinium semilunatum (Herdman) J.D.Dodge, 1982 accepted as Ankistrodinium semilunatum (Herdman) Hoppenrath, Shauna Murray, Sparmann & Leander, 2012 (synonym)
172. Species Amphidinium semilunatum Schiller, 1933 accepted as Thecadinium semilunatum (Herdman) J.D.Dodge, 1982 accepted as Ankistrodinium semilunatum (Herdman) Hoppenrath, Shauna Murray, Sparmann & Leander, 2012 (synonym)
173. Species Amphidinium semilunatum Herdman, 1924 accepted as Ankistrodinium semilunatum (Herdman) Hoppenrath, Shauna Murray, Sparmann & Leander, 2012
174. Species Amphidinium skujae Christen, 1958 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
175. Species Amphidinium sphagnicola Conrad, 1943 accepted as Gymnodinium sphagnicola (W.Conrad) Moestrup & Calado, 2018
176. Species Amphidinium subsalum Biecheler, 1952 accepted as Amphidinium pellucidum E.C.Herdman, 1922 accepted as Gymnodinium venator Flo Jørgensen & Murray, 2004 (synonym)
177. Species Amphidinium sulcatum Herdman accepted as Thecadinium kofoidii (Herdman) J.Schiller, 1931 (synonym)
178. Species Amphidinium tatrae Wołoszyńska, 1936 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
179. Species Amphidinium tenagodes T.M.Harris, 1940 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005
180. Species Amphidinium testudo E.C.Herdman, 1924 accepted as Testudodinium testudo (Herdman) Horiguchi, Tamura, Katsumata & A.Yamaguchi, 2012
181. Species Amphidinium turicense Huber-Pestalozzi, 1950 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 (synonym)
182. Species Amphidinium vasculum Kofoid & Swezy, 1921 accepted as Balechina gracilis (Bergh) F.Gómez, Artigas & Gast, 2021
183. Species Amphidinium vernale Skvortsov, 1946 accepted as Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005
184. Species Amphidinium viride J.Schiller, 1955 accepted as Prosoaulax viridis (J.Schiller) Calado & Moestrup, 2005 (synonym)
185. Species Amphidinium vorax Schiller, 1955 accepted as Prosoaulax multiplex (J.Schiller) Calado & Moestrup, 2005 (synonym)
186. Species Amphidinium wislouchii Hulburt, 1957 accepted as Amphidinium steinii (Lemmermann) Kofoid & Swezy, 1921 (synonym)
187. Species Amphidinium yoorugurrum Sh.Murray & D.J.Patterson, 2002 accepted as Amphidinium yuroogurrum Shauna Murray & D.J.Patterson, 2002 (misspelling)
188. Species Amphidinium achromaticum Skvortsov, 1958 (uncertain)
189. Species Amphidinium alinii Skvortsov, 1958 (uncertain)
190. Species Amphidinium amygdalus A.Cleve, 1918 (uncertain)
191. Species Amphidinium glaucovirescens J.Schiller, 1955 (uncertain)
192. Species Amphidinium hadae Balech, 1976 (uncertain)
193. Species Amphidinium lefevrei Skvortsov, 1968 (uncertain)
194. Species Amphidinium luteum Skuja, 1939 (uncertain)
195. Species Amphidinium massartiae Biecheler, 1952 (uncertain)
196. Species Amphidinium nasutum Skvortsov, 1958 (uncertain)
197. Species Amphidinium ovoideum (Lemmermann) Lemmermann, 1900 (uncertain)
198. Species Amphidinium pusillum J.Schiller, 1955 (uncertain)
199. Species Amphidinium rostratum Conrad & Kufferath, 1954 (uncertain)
200. Species Amphidinium schilleri Skvortsov, 1968 (uncertain)
201. Species Amphidinium semilunatum Kofoid & Swezy, 1921 (uncertain)
202. Species Amphidinium subsalsum Biecheler, 1952 (uncertain)
203. Species Amphidinium sulcatum Kofoid, 1907 (uncertain)
204. Species Amphidinium trachodinioides Conrad & Kufferath (uncertain)
205. Species Amphidinium urnula A.Cleve, 1918 (uncertain)

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