1. Species Gonyaulax acuta Kofoid & Michener, 1911
2. Species Gonyaulax africana Schiller, 1929
3. Species Gonyaulax alaskensis Kofoid, 1911
4. Species Gonyaulax areolata Kofoid & J.R.Michener, 1911
5. Species Gonyaulax baltica M.E.Ellegaard, J.Lewis & I.Harding, 2002
6. Species Gonyaulax birostris Stein, 1883
7. Species Gonyaulax bispinosa Kofoid & Michener, 1911
8. Species Gonyaulax bohaiensis Gu, Mertens & Shin, 2022
9. Species Gonyaulax borealis Nordli, 1951
10. Species Gonyaulax braarudii Hasle, 1960
11. Species Gonyaulax brevisulcata P.Dangeard, 1927
12. Species Gonyaulax bruunii F.J.R.Taylor, 1976
13. Species Gonyaulax ceratocoroides Kofoid, 1910
14. Species Gonyaulax cochlea Meunier, 1919
15. Species Gonyaulax dangeardii Schiller, 1935
16. Species Gonyaulax diacantha Athanassopoulos, 1931
17. Species Gonyaulax diegensis Kofoid, 1911
18. Species Gonyaulax digitale (Pouchet) Kofoid, 1911
19. Species Gonyaulax digitalis (C.H.G.Pouchet) Kofoid, 1911
20. Species Gonyaulax elegans Rampi, 1951
21. Species Gonyaulax ellegaardiae Mertens, Aydin, Takano, Yamaguchi & Matsuoka, 2015
22. Species Gonyaulax elongata (Reid) Ellegaard, Daugbjerg, Rochon, J.Lewis & Harding, 2003
23. Species Gonyaulax expansa Kofoid & Michener, 1911
24. Species Gonyaulax fragilis (Schütt) Kofoid, 1911
25. Species Gonyaulax fusiformis H.W.Graham, 1942
26. Species Gonyaulax geomunensis Hyun Jung Kim, Zhun Li, H.Gu., K.N.Mertens & H.H. Shin, 2022
27. Species Gonyaulax globosa Stüwe, 1909
28. Species Gonyaulax grabrielae Schiller, 1935
29. Species Gonyaulax gracilis Schiller, 1935
30. Species Gonyaulax granii A.Henckel, 1909
31. Species Gonyaulax helensis Woloszynska, 1928
32. Species Gonyaulax inclinata Kofoid & Michener, 1911
33. Species Gonyaulax inflata (Kofoid) Kofoid, 1911
34. Species Gonyaulax kofoidii Pavillard, 1909
35. Species Gonyaulax lebouriae Balech, 1979
36. Species Gonyaulax ligustica Rampi, 1951
37. Species Gonyaulax loculata Meunier, 1919
38. Species Gonyaulax longicornu P.H.Campbell, 1973
39. Species Gonyaulax macroporus Mangin, 1922
40. Species Gonyaulax manginii Fauré-Fremiet, 1908
41. Species Gonyaulax matkovichii J.Schiller, 1929
42. Species Gonyaulax milneri (Murray & Whitting) Kofoid, 1911
43. Species Gonyaulax minima Matzenauer, 1933
44. Species Gonyaulax minuta Kofoid & Michener, 1911
45. Species Gonyaulax monacantha Pavillard, 1916
46. Species Gonyaulax monospina Rampi, 1952
47. Species Gonyaulax nezaniae H.Gu. & K.N.Mertens, 2021
48. Species Gonyaulax nigricans (Schiller) Balech, 1988
49. Species Gonyaulax nivicola (Meunier) Kofoid, 1911
50. Species Gonyaulax obliqua (Gourret) Lemmermann, 1899
51. Species Gonyaulax orientalis Lindemann, 1924
52. Species Gonyaulax ovalis Schiller, 1929
53. Species Gonyaulax ovata Matzenauer, 1933
54. Species Gonyaulax pacifica Kofoid, 1907
55. Species Gonyaulax parva Ramsfjell, 1959
56. Species Gonyaulax paucula Kofoid & Michener, 1911
57. Species Gonyaulax pavillardii Kofoid & Michener, 1911
58. Species Gonyaulax perpusilla (Meunier) Kofoid, 1911
59. Species Gonyaulax polygramma F.Stein, 1883
60. Species Gonyaulax reticulata Kofoid & Michener, 1911
61. Species Gonyaulax rostratum P.-A.Dangeard, 1927
62. Species Gonyaulax rotundata Rampi, 1952
63. Species Gonyaulax rugosa Wailes, 1928
64. Species Gonyaulax rugosum Wailes
65. Species Gonyaulax scrippsae Kofoid, 1911
66. Species Gonyaulax senta Kofoid & Michener, 1911
67. Species Gonyaulax sousae Balech, 1959
68. Species Gonyaulax sphaeroidea Kofoid, 1911
69. Species Gonyaulax spinifera (Claparède & Lachmann) Diesing, 1866
70. Species Gonyaulax spinosa Athanassopoulos, 1931
71. Species Gonyaulax subulata Kofoid & Michener, 1911
72. Species Gonyaulax symmetricus Athanassopoulos, 1931
73. Species Gonyaulax taylorii M.C.Carbonell-Moore, 1996
74. Species Gonyaulax trottii Rampi, 1951
75. Species Gonyaulax turbynei Murray & Whitting, 1899
76. Species Gonyaulax unicornis Lebour, 1925
77. Species Gonyaulax whaseongensis A.S.Lim, H.J.Jeong & Ji Hye Kim, 2018
78. Species Gonyaulax acatenella Whedon & Kofoid, 1936 accepted as Alexandrium catenella (Whedon & Kofoid) Balech, 1985 (basionym)
79. Species Gonyaulax apiculata Entz, 1904 accepted as Gonyaulax clevei Ostenfeld, 1902
80. Species Gonyaulax balechii Steidinger, 1971 accepted as Alexandrium balechii (Steidinger) Balech, 1995 (basionym)
81. Species Gonyaulax buxus Balech, 1967 accepted as Amylax triacantha var. buxus (Balech) Gárate-Lizárraga, 2014
82. Species Gonyaulax catenata (Levander) Kofoid, 1911 accepted as Peridiniella catenata (Levander) Balech, 1977 (synonym)
83. Species Gonyaulax catenella Whedon & Kofoid, 1936 accepted as Alexandrium catenella (Whedon & Kofoid) Balech, 1985 (basionym)
84. Species Gonyaulax cohorticula Balech, 1967 accepted as Alexandrium cohorticula (Balech) Balech, 1985 (synonym)
85. Species Gonyaulax concava (Gaarder) Balech, 1967 accepted as Alexandrium concavum (Gaarder) Balech, 1985 (synonym)
86. Species Gonyaulax culmula G.Norris, 1965 † accepted as Dichadogonyaulax culmula (G.Norris) A.R.Loeblich Jr.& A.R.Loeblich III
87. Species Gonyaulax depressum (Gaarder) Balech, 1979 accepted as Gonyaulax depressus (K.R.Gaarder) Balech, 1979 accepted as Alexandrium depressum (K.R.Gaarder) Balech & Tangen, 1985 (synonym)
88. Species Gonyaulax depressus (K.R.Gaarder) Balech, 1979 accepted as Alexandrium depressum (K.R.Gaarder) Balech & Tangen, 1985
89. Species Gonyaulax diacantha (Meunier) Schiller, 1937 accepted as Sourniaea diacantha (Meunier) H.Gu., K.N.Mertens, Zhun Li & H.H.Shin, 2020 (unaccepted > superseded combination)
90. Species Gonyaulax digitale Lemmermann, 1899 accepted as Gonyaulax digitale (Pouchet) Kofoid, 1911 (synonym)
91. Species Gonyaulax dimorpha Biecheler, 1952 accepted as Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985
92. Species Gonyaulax excavata (Braarud) Balech, 1971 accepted as Alexandrium catenella (Whedon & Kofoid) Balech, 1985 (synonym)
93. Species Gonyaulax fratercula Balech, 1964 accepted as Gonyaulax fraterculus Balech, 1964 accepted as Alexandrium fraterculus (Balech) Balech, 1985 (synonym)
94. Species Gonyaulax fraterculus Balech, 1964 accepted as Alexandrium fraterculus (Balech) Balech, 1985
95. Species Gonyaulax globosa Schiller, 1929 accepted as Gonyaulax sphaeroidea Kofoid, 1911
96. Species Gonyaulax globosa (Braarud) Balech, 1971 accepted as Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985 (Synonym)
97. Species Gonyaulax glyptorhynchus Murray & Whitting, 1899 accepted as Gonyaulax birostris Stein, 1883 (synonym)
98. Species Gonyaulax grindleyi Reinecke, 1967 accepted as Protoceratium reticulatum (Claparède & Lachmann) Bütschli, 1885 (synonym)
99. Species Gonyaulax highlei Murray & Whitting, 1899 accepted as Gonyaulax highleyi Murray & Whitting, 1899 accepted as Gonyaulax birostris Stein, 1883 (synonym)
100. Species Gonyaulax highleyi Murray & Whitting, 1899 accepted as Gonyaulax birostris Stein, 1883
101. Species Gonyaulax hyalina Ostenfeld & Schmidt, 1901 accepted as Gonyaulax fragilis (Schütt) Kofoid, 1911
102. Species Gonyaulax hyperborea (Cleve) Paulsen, 1903 accepted as Amylax triacantha (Jørgensen) Sournia, 1984 (synonym)
103. Species Gonyaulax jolliffei Murray & Whitting, 1899 accepted as Spiraulax jolliffei (Murray & Whitting) Kofoid, 1911 (synonym)
104. Species Gonyaulax kutnerae Balech, 1979 accepted as Alexandrium kutnerae (Balech, 1979) Balech, 1985 (synonym)
105. Species Gonyaulax lebourae Balech, 1979 accepted as Gonyaulax lebouriae Balech, 1979
106. Species Gonyaulax levanderi (Lemmermann) Paulsen, 1907 accepted as Gonyaulax spinifera (Claparède & Lachmann) Diesing, 1866 (synonym)
107. Species Gonyaulax longispina Lebour, 1925 accepted as Sourniaea diacantha (Meunier) H.Gu., K.N.Mertens, Zhun Li & H.H.Shin, 2020 (unaccepted > junior subjective synonym)
108. Species Gonyaulax membranacea (M.Rossignol) Ellegaard, Daugbjerg, Rochon, J.Lewis & Harding, 2003 † accepted as Gonyaulax spinifera (Claparède & Lachmann) Diesing, 1866
109. Species Gonyaulax mitra (Schütt) Kofoid, 1911 accepted as Schuettiella mitra (Schütt) Balech, 1988 (synonym)
110. Species Gonyaulax monilata J.F.Howell, 1953 accepted as Alexandrium monilatum (J.F.Howell) Balech, 1995 (basionym)
111. Species Gonyaulax monilatum (Howell) Loeblich III accepted as Alexandrium monilatum (J.F.Howell) Balech, 1995 (synonym)
112. Species Gonyaulax ostenfeldii (Paulsen) Paulsen, 1949 accepted as Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985
113. Species Gonyaulax phoenus (Woloszynbska & Conrad) F.J.R. Taylor, 1975 accepted as Gonyaulax phoneus (Woloszynsky & Conrad) Loeblich & Loeblich accepted as Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985 (synonym)
114. Species Gonyaulax phoneus (Woloszynsky & Conrad) Loeblich & Loeblich accepted as Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985
115. Species Gonyaulax polyedra F.Stein, 1883 accepted as Lingulaulax polyedra (F.Stein) M.J.Head, K.N.Mertens & R.A.Fensome 2024 (unaccepted > superseded combination)
116. Species Gonyaulax spinifera Murray & Whitting, 1899 accepted as Gonyaulax ceratocoroides Kofoid, 1910
117. Species Gonyaulax tamarensis Lebour, 1925 accepted as Alexandrium tamarense (Lebour) Balech, 1995 (basionym)
118. Species Gonyaulax triacantha Jörgensen, 1899 accepted as Amylax triacantha (Jørgensen) Sournia, 1984 (basionym)
119. Species Gonyaulax trygvei Parke, 1976 accepted as Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985 (synonym)
120. Species Gonyaulax verior Sournia, 1973 accepted as Sourniaea diacantha (Meunier) H.Gu., K.N.Mertens, Zhun Li & H.H.Shin, 2020 (unaccepted > junior subjective synonym)
121. Species Gonyaulax washingtonensis Hsu, 1967 accepted as Alexandrium catenella (Whedon & Kofoid) Balech, 1985 (synonym)
122. Species Gonyaulax conjuncta E.J.F.Wood, 1954 (uncertain)
123. Species Gonyaulax striata Mangin, 1922 (uncertain)

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