1. Species Coscinodiscus aeginensis A.W.F.Schmidt
2. Species Coscinodiscus antiquus Grunow
3. Species Coscinodiscus apiculatus Ehrenberg, 1844
4. Species Coscinodiscus atlanticus Castracane
5. Species Coscinodiscus belgicae M.Peragallo
6. Species Coscinodiscus biangulatus A.W.F.Schmidt
7. Species Coscinodiscus bractea J.-J.Brun
8. Species Coscinodiscus clivosus Pantocsek
9. Species Coscinodiscus concinnus W.Smith, 1856
10. Species Coscinodiscus convexus A.W.F.Schmidt
11. Species Coscinodiscus crassus Bailey
12. Species Coscinodiscus cristatus J.Rattray
13. Species Coscinodiscus curvatulus Grunow ex A.Schmidt, 1878
14. Species Coscinodiscus curvulatus
15. Species Coscinodiscus denarius A.Schmidt
16. Species Coscinodiscus diophthalmus F.S.Castracane degli Antelminelli
17. Species Coscinodiscus diorama A.W.F.Schmidt
18. Species Coscinodiscus dispar M.Peragallo & Héribaud-Joseph
19. Species Coscinodiscus diversus Grunow
20. Species Coscinodiscus dubiosus Grunow
21. Species Coscinodiscus entoleion Grunow
22. Species Coscinodiscus entoleyon
23. Species Coscinodiscus evadens J.Rattray
24. Species Coscinodiscus excavatus Greville ex Ralfs, 1861
25. Species Coscinodiscus exiguus J.Rattray
26. Species Coscinodiscus fimbriatus Ehrenberg, 1844
27. Species Coscinodiscus flexuosus J.Brun
28. Species Coscinodiscus gemmifer Ehrenberg
29. Species Coscinodiscus gigas Ehrenberg, 1841
30. Species Coscinodiscus gorbunovii
31. Species Coscinodiscus grandineus J.Rattray
32. Species Coscinodiscus granii Gough, 1905
33. Species Coscinodiscus griseus Greville
34. Species Coscinodiscus grunowii Pantocsek
35. Species Coscinodiscus hartingii
36. Species Coscinodiscus hexagonalis G.H.H.Karsten
37. Species Coscinodiscus hungaricus Pantocsek
38. Species Coscinodiscus implicatus J.Rattray
39. Species Coscinodiscus intumescens Pantocsek
40. Species Coscinodiscus janischii A.Schmidt, 1878
41. Species Coscinodiscus kuetzingii A.Schmidt, 1878
42. Species Coscinodiscus marginato-lineatus A.W.F.Schmidt
43. Species Coscinodiscus moronensis J.Rattray
44. Species Coscinodiscus nitidulus Grunow
45. Species Coscinodiscus obovatus Castracane
46. Species Coscinodiscus obscurus A.Schmidt, 1878
47. Species Coscinodiscus obversus J.Rattray
48. Species Coscinodiscus oculus Ehrenberg, 1840
49. Species Coscinodiscus odontodiscus Grunow
50. Species Coscinodiscus omphalanthus Ehrenberg
51. Species Coscinodiscus opposites
52. Species Coscinodiscus pacificus (Grunow) J.Rattray
53. Species Coscinodiscus partitus E.Grove & G.Sturt
54. Species Coscinodiscus parvulus G.H.H.Karsten
55. Species Coscinodiscus payeri Grunow
56. Species Coscinodiscus perforatus Ehrenberg, 1844
57. Species Coscinodiscus perikompsos J.Rattray
58. Species Coscinodiscus plicatus Grunow
59. Species Coscinodiscus punctatus Ehrenberg
60. Species Coscinodiscus pygmaeus J.-J.Brun & M.Peragallo
61. Species Coscinodiscus robustus Greville, 1866
62. Species Coscinodiscus rothii (Ehrenberg) Grunow
63. Species Coscinodiscus senarius A.Schmidt
64. Species Coscinodiscus sphaeroidalis J.Rattray
65. Species Coscinodiscus stokesianus subtypicus Grunow
66. Species Coscinodiscus subconcavus Grunow, 1878
67. Species Coscinodiscus subglobosus Cleve & Grunow
68. Species Coscinodiscus subnotabilis J.Rattray
69. Species Coscinodiscus superbus Hardman
70. Species Coscinodiscus symmetricus Greville, 1861
71. Species Coscinodiscus traducens J.Rattray
72. Species Coscinodiscus tuberculatus A.W.F.Schmidt
73. Species Coscinodiscus undulosus A.Mann
74. Species Coscinodiscus varians G.H.H.Karsten
75. Species Coscinodiscus africanus Janisch ex A.Schmidt accepted as Azpeitia africana (Janisch ex Schmidt) G. Fryxell & T. P. Watkins in Fryxell, Sims & Watkins, 1986 accepted as Coscinodiscus africanus var. africanus Janisch in Schmidt et al., 1878
76. Species Coscinodiscus angstii Gran, 1931 accepted as Thalassiosira punctigera (Castracane) Hasle, 1983 accepted as Ethmodiscus punctiger Castracane, 1886
77. Species Coscinodiscus anguste-lineatus A.Schmidt, 1878 accepted as Thalassiosira anguste-lineata (A.Schmidt) G.Fryxell & Hasle, 1977 accepted as Coscinodiscus angustelineatus Schmidt in Schmidt et al., 1878 (basionym)
78. Species Coscinodiscus bioculatus Grunow, 1884 accepted as Thalassiosira bioculata (Grunow) Ostenfeld, 1903
79. Species Coscinodiscus cocconeiformis A.Schmidt accepted as (synonym)
80. Species Coscinodiscus commutatus Grunow, 1884 accepted as Coscinodiscopsis commutata (Grunow) E.A.Sar & I.Sunesen, 2008 (unaccepted > junior objective synonym)
81. Species Coscinodiscus coronula Frenguelli & Orlando, 1958 (unaccepted > nomen nudum, invalidly published)
82. Species Coscinodiscus crenulatus Grunow accepted as Azpeitia neocrenulata (VanLandingham) G. Fryxell & T.P. Watkins in Fryxell, Sims & Watkins, 1986 accepted as Coscinodiscus neocrenulatus var. neocrenulatus VanLandingham, 1968
83. Species Coscinodiscus excentricus Ehrenberg, 1840 accepted as Thalassiosira eccentrica (Ehrenberg) Cleve, 1904 (synonym)
84. Species Coscinodiscus granulosus Grunow accepted as Ehrenbergiulva granulosa (Grunow in Cleve & Grunow) Witkowski, Lange-Bertalot & Metzeltin in Witkowski & Lange-Bertalot, 2004 accepted as Coscinodiscus granulosus var. granulosus Grunow in Cleve & Grunow, 1880 (synonym)
85. Species Coscinodiscus hauckii Grunow, 1882 accepted as Ehrenbergiulva hauckii (Grunow in Van Heurck) Witkowski, Lange-Bertalot & Metzeltin in Witkowski & Lange-Bertalot, 2004 accepted as Coscinodiscus hauckii var. hauckii Grunow in Van Heurck, 1882 (synonym)
86. Species Coscinodiscus jonesianus (Greville) Ostenfeld, 1915 accepted as Coscinodiscopsis jonesiana (Greville) E.A.Sar & I.Sunesen, 2008
87. Species Coscinodiscus kützingii A.Schmidt, 1878 accepted as Actinocyclus kützingii (A.Schmidt) Simonsen (synonym)
88. Species Coscinodiscus lentiginosus Janisch, 1874 accepted as Thalassiosira lentiginosa (Janisch) Fryxell, 1977 accepted as Coscinodiscus lentiginosus var. lentiginosus Janisch in Schmidt et al., 1878
89. Species Coscinodiscus leptopus Grunow, 1883 accepted as Thalassiosira leptopus (Grunow ex Van Heurck) Hasle & G.Fryxell, 1977 (basionym)
90. Species Coscinodiscus margaritae Frenguelli & Orlando, 1958 (unaccepted > nomen nudum, invalidly published)
91. Species Coscinodiscus neocrenulatus S.L.VanLandingham, 1968 accepted as Azpeitia neocrenulata (VanLandingham) G. Fryxell & T.P. Watkins in Fryxell, Sims & Watkins, 1986 accepted as Coscinodiscus neocrenulatus var. neocrenulatus VanLandingham, 1968
92. Species Coscinodiscus oculusiridis Ehrenberg, 1840 accepted as Coscinodiscus oculus-iridis (Ehrenberg) Ehrenberg, 1840 (spelling variation)
93. Species Coscinodiscus stellaris Roper, 1858 accepted as Stellarima stellaris (Roper) G.R.Hasle & P.A.Sims, 1986 accepted as Coscinodiscus stellaris var. stellaris Roper, 1858 (synonym)
94. Species Coscinodiscus symbolophorus Grunow, 1884 accepted as Stellarima microtrias (Ehrenberg) G.R.Hasle & P.A.Sims, 1986 accepted as Symbolophora microtrias Ehrenberg, 1844
95. Species Coscinodiscus tabularis Grunow, 1884 accepted as Azpeitia tabularis (Grunow) G.Fryxell & P.A.Sims, 1986 accepted as Coscinodiscus tabularis var. tabularis Grunow, 1884
96. Species Coscinodiscus tumidus Janisch, 1874 accepted as Thalassiosira tumida (Janisch) Hasle, 1971 accepted as Coscinodiscus tumidus var. tumidus Janisch in Schmidt et al., 1878
97. Species Coscinodiscus variabilis Frenguelli, 1928 accepted as Actinocyclus ferrarioae Lameiro, Vouilloud & Cefarelli, 2023 (unaccepted > junior objective synonym)
98. Species Coscinodiscus nodulifer A.W.F.Schmidt, 1878 represented as Azpeitia nodulifera (A.W.F.Schmidt) G.A.Fryxell & P.A.Sims, 1986 (Homotypic Synonym)
99. Species Coscinodiscus actinochilus Ehrenberg, 1844 (uncertain > unassessed)
100. Species Coscinodiscus actinocycloides Pantocsek, 1886 (uncertain > unassessed)
101. Species Coscinodiscus actinocycloides M. Peragallo, 1921 (uncertain > unassessed)
102. Species Coscinodiscus actinocyclus Ehrenberg, 1854 (uncertain > unassessed)
103. Species Coscinodiscus actinoptychus A.M.Edwards (uncertain > unassessed)
104. Species Coscinodiscus actinosus Grove ex Rattray, 1890 (uncertain > unassessed)
105. Species Coscinodiscus adumbratus Østrup, 1895 (uncertain > unassessed)
106. Species Coscinodiscus aethes Rattray, 1890 (uncertain > unassessed)
107. Species Coscinodiscus agapetos Rattray, 1890 (uncertain > unassessed)
108. Species Coscinodiscus alboranii Pavillard, 1925 (uncertain > unassessed)
109. Species Coscinodiscus alienus VanLandingham, 1968 (uncertain > unassessed)
110. Species Coscinodiscus alpha Karsten, 1907 (uncertain > unassessed)
111. Species Coscinodiscus amplus Ehrenberg, 1872 (uncertain > unassessed)
112. Species Coscinodiscus anastomosans Grunow, 1884 (uncertain > unassessed)
113. Species Coscinodiscus anastomosans Pantocsek, 1892 (uncertain > unassessed)
114. Species Coscinodiscus angulatus Greville, 1864 (uncertain > unassessed)
115. Species Coscinodiscus angulosus Barker & Meakin, 1946 (uncertain > unassessed)
116. Species Coscinodiscus annulatus Grunow, 1884 (uncertain > unassessed)
117. Species Coscinodiscus anomalus VanLandingham, 1968 (uncertain > unassessed)
118. Species Coscinodiscus antarcticus Castracane, 1886 (uncertain > unassessed)
119. Species Coscinodiscus antediluvianus Rattray, 1890 (uncertain > unassessed)
120. Species Coscinodiscus antimimos Rattray, 1890 (uncertain > unassessed)
121. Species Coscinodiscus antiquus (Pantocsek) Schütt, 1896 (uncertain > unassessed)
122. Species Coscinodiscus antiquus Schütt, 1896 (uncertain > unassessed)
123. Species Coscinodiscus apages Rattray, 1890 (uncertain > unassessed)
124. Species Coscinodiscus aphrastos Rattray, 1890 (uncertain > unassessed)
125. Species Coscinodiscus apiculiferus Rattray, 1890 (uncertain > unassessed)
126. Species Coscinodiscus apollinis Ehrenberg accepted as Charcotiella apollinis (Ehr.) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
127. Species Coscinodiscus arafuraensis Janisch, 1888 (uncertain > unassessed)
128. Species Coscinodiscus aralensis Ostenfeld, 1908 (uncertain > unassessed)
129. Species Coscinodiscus arentii (Kolbe) Cleve-Euler, 1951 accepted as Cyclotella arentii Kolbe, 1948 (uncertain > unassessed)
130. Species Coscinodiscus argus Ehrenberg, 1839 (uncertain > unassessed)
131. Species Coscinodiscus armatus Greville, 1861 (uncertain > unassessed)
132. Species Coscinodiscus asonumaae Pantocsek, 1892 (uncertain > unassessed)
133. Species Coscinodiscus asperulus Grunow, 1884 (uncertain > unassessed)
134. Species Coscinodiscus asteroides Truan y Luard & Witt, 1888 (uncertain > unassessed)
135. Species Coscinodiscus asteromphalus Ehrenberg, 1844 (uncertain > unassessed)
136. Species Coscinodiscus asymmetricus Grunow in Cleve & Möller, 1878 (uncertain > unassessed)
137. Species Coscinodiscus asymmetricus Meister, 1932 (uncertain > unassessed)
138. Species Coscinodiscus auliscus Kützing, 1849 (uncertain > unassessed)
139. Species Coscinodiscus australiensis Grunow, 1884 (uncertain > unassessed)
140. Species Coscinodiscus australis Karsten, 1905 accepted as Charcotiella australis (G.Karst) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
141. Species Coscinodiscus baicalensis Henckel, 1921 (uncertain > unassessed)
142. Species Coscinodiscus balticus (Grunow) Grunow ex Cleve, 1891 accepted as Coscinodiscus polyacanthus var. baltica Grunow in Cleve & Grunow, 1880 (uncertain > unassessed)
143. Species Coscinodiscus barbadensis Greville, 1861 (uncertain > unassessed)
144. Species Coscinodiscus barkeri VanLandingham, 1968 (uncertain > unassessed)
145. Species Coscinodiscus barklyi Coates, 1861 (uncertain > unassessed)
146. Species Coscinodiscus bathyomphalus Cleve, 1883 (uncertain > unassessed)
147. Species Coscinodiscus beaufortianus (Hustedt) VanLandingham, 1979 accepted as Cosmiodiscus beaufortianus Hustedt, 1955 † (uncertain > unassessed)
148. Species Coscinodiscus bellum Jousé in Proschkina-Lavrenko, 1949 (uncertain > unassessed)
149. Species Coscinodiscus bergii Cleve-Euler, 1941 (uncertain > unassessed)
150. Species Coscinodiscus beta Karsten, 1907 (uncertain > unassessed)
151. Species Coscinodiscus biconfusus VanLandingham, 1968 (uncertain > unassessed)
152. Species Coscinodiscus biconicus Van Breemen, 1905 (uncertain > unassessed)
153. Species Coscinodiscus bifrons Castracane, 1886 accepted as Charcotiella bifrons (Castrac.) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
154. Species Coscinodiscus biharensis Pantocsek, 1886 (uncertain > unassessed)
155. Species Coscinodiscus binoculus Gombos, 1980 (uncertain > unassessed)
156. Species Coscinodiscus bipartitus Rattray, 1890 (uncertain > unassessed)
157. Species Coscinodiscus bisculptus Rattray, 1890 (uncertain > unassessed)
158. Species Coscinodiscus bisinuatus Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
159. Species Coscinodiscus bisulcatus Karsten, 1907 (uncertain > unassessed)
160. Species Coscinodiscus blandus A.Schmidt, 1878 (uncertain > unassessed)
161. Species Coscinodiscus boeckhii Pantocsek, 1889 (uncertain > unassessed)
162. Species Coscinodiscus boliviensis Grunow in Van Heurck, 1883 (uncertain > unassessed)
163. Species Coscinodiscus borealis Ehrenberg, 1861 (uncertain > unassessed)
164. Species Coscinodiscus boulei H. Peragallo in Heribaud, 1903 (uncertain > unassessed)
165. Species Coscinodiscus bouvet Karsten, 1905 (uncertain > unassessed)
166. Species Coscinodiscus brasiliensis Müller-Melchers, 1955 (uncertain > unassessed)
167. Species Coscinodiscus bremianus Pantocsek, 1886 (uncertain > unassessed)
168. Species Coscinodiscus brunii Leuduger-Fortmorel, 1898 (uncertain > unassessed)
169. Species Coscinodiscus bulla Hohn & Hellerman, 1966 (uncertain > unassessed)
170. Species Coscinodiscus bullatus Janisch, 1888 (uncertain > unassessed)
171. Species Coscinodiscus bulliens Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
172. Species Coscinodiscus caballeroi Azpeitia, 1911 (uncertain > unassessed)
173. Species Coscinodiscus californicus O'Meara, 1890 (uncertain > unassessed)
174. Species Coscinodiscus cameratus Hajós, 1968 (uncertain > unassessed)
175. Species Coscinodiscus capensis Grunow, 1884 (uncertain > unassessed)
176. Species Coscinodiscus caraibicus Truan y Luard & Witt, 1888 (uncertain > unassessed)
177. Species Coscinodiscus caspius Ehrenberg, 1872 (uncertain > unassessed)
178. Species Coscinodiscus castracanei Hajós, 1968 (uncertain > unassessed)
179. Species Coscinodiscus castracanei Ostenfeld, 1915 (uncertain > unassessed)
180. Species Coscinodiscus castracanei Karsten, 1905 accepted as Charcotiella castracanei (G.Karst.) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
181. Species Coscinodiscus caudatus Karsten, 1905 (uncertain > unassessed)
182. Species Coscinodiscus centralis Ehrenberg, 1844 (uncertain > unassessed)
183. Species Coscinodiscus centranthus Ehrenberg, 1854 (uncertain > unassessed)
184. Species Coscinodiscus centrolineatus Karsten, 1905 (uncertain > unassessed)
185. Species Coscinodiscus cervinus (Brightwell) Ralfs in Pritchard, 1861 accepted as Hyalodiscus cervinus Brightw., 1860 † (uncertain > unassessed)
186. Species Coscinodiscus challengeri Janisch in Cleve & Möller, 1879 (uncertain > unassessed)
187. Species Coscinodiscus chambonis M. Peragallo & Héribaud in Héribaud, 1893 (uncertain > unassessed)
188. Species Coscinodiscus charcotii M. Peragallo, 1921 (uncertain > unassessed)
189. Species Coscinodiscus chromoradiatus Karsten, 1905 accepted as Charcotiella chromoradiata (G.Karst.) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
190. Species Coscinodiscus chunii Karsten, 1905 (uncertain > unassessed)
191. Species Coscinodiscus ciliatus Mann, 1925 (uncertain > unassessed)
192. Species Coscinodiscus cinctus Kützing, 1844 (uncertain > unassessed)
193. Species Coscinodiscus cingulatus Ehrenberg, 1844 (uncertain > unassessed)
194. Species Coscinodiscus circumdatus Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
195. Species Coscinodiscus circumscriptus Mann, 1937 (uncertain > unassessed)
196. Species Coscinodiscus circumspectus Long, Fuge & Smith, 1946 (uncertain > unassessed)
197. Species Coscinodiscus cirrus Lohman, 1938 (uncertain > unassessed)
198. Species Coscinodiscus cladiscophorus Lefébure & Chenèviere, 1939 (uncertain > unassessed)
199. Species Coscinodiscus clarescens Long, Fuge & Smith, 1946 (uncertain > unassessed)
200. Species Coscinodiscus clypeus Ehrenberg, 1854 (uncertain > unassessed)
201. Species Coscinodiscus compositus Rattray, 1890 (uncertain > unassessed)
202. Species Coscinodiscus compressus Karsten, 1905 (uncertain > unassessed)
203. Species Coscinodiscus comptus Castracane, 1886 (uncertain > unassessed)
204. Species Coscinodiscus concavus Ehrenberg, 1854 (uncertain > unassessed)
205. Species Coscinodiscus concentricus Harting, 1852 (uncertain > unassessed)
206. Species Coscinodiscus concinniformis Simonsen, 1974 (uncertain > unassessed)
207. Species Coscinodiscus conclusus Grove in Schmidt et al., 1891 (uncertain > unassessed)
208. Species Coscinodiscus condensatus (Cleve) Cleve-Euler, 1951 accepted as Thalassiosira condensata Cleve, 1900 (uncertain > unassessed)
209. Species Coscinodiscus confertus Rattray, 1890 (uncertain > unassessed)
210. Species Coscinodiscus conformis Rattray, 1890 (uncertain > unassessed)
211. Species Coscinodiscus confusus Rattray, 1890 (uncertain > unassessed)
212. Species Coscinodiscus contendens Mann, 1937 (uncertain > unassessed)
213. Species Coscinodiscus convergens Karsten, 1905 (uncertain > unassessed)
214. Species Coscinodiscus cornutus Meister, 1932 (uncertain > unassessed)
215. Species Coscinodiscus cornutus Karsten, 1905 (uncertain > unassessed)
216. Species Coscinodiscus corolla Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
217. Species Coscinodiscus costatus Hendey, 1939 (uncertain > unassessed)
218. Species Coscinodiscus craspedodiscus Kützing, 1849 (uncertain > unassessed)
219. Species Coscinodiscus cribrosus Truan y Luard & Witt, 1888 (uncertain > unassessed)
220. Species Coscinodiscus cruciatus (Ehrenberg) Kützing, 1844 accepted as Pyxidicula cruciata Ehrenberg, 1838 (uncertain > unassessed)
221. Species Coscinodiscus cuneistriatus Mann, 1937 (uncertain > unassessed)
222. Species Coscinodiscus cycloteres Castracane, 1886 (uncertain > unassessed)
223. Species Coscinodiscus decipiens Grunow ex Van Heurck, 1882 (uncertain > unassessed)
224. Species Coscinodiscus decoratus Brun, 1891 (uncertain > unassessed)
225. Species Coscinodiscus decrescenoides Jousé, 1955 (uncertain > unassessed)
226. Species Coscinodiscus decrescens Grunow, 1878 accepted as Charcotiella grunowii S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
227. Species Coscinodiscus decussatus Grove & Sturt manuscript in Rattray, 1890 (uncertain > unassessed)
228. Species Coscinodiscus decussatus Hajós, 1973 (uncertain > unassessed)
229. Species Coscinodiscus definitus Long, Fuge & Smith, 1946 (uncertain > unassessed)
230. Species Coscinodiscus deformans Schrader, 1976 (uncertain > unassessed)
231. Species Coscinodiscus deformatus Mann, 1907 (uncertain > unassessed)
232. Species Coscinodiscus deformatus Pantocsek, 1903 (uncertain > unassessed)
233. Species Coscinodiscus delawarensis Grunow in Rattray, 1890 (uncertain > unassessed)
234. Species Coscinodiscus delta Karsten, 1907 (uncertain > unassessed)
235. Species Coscinodiscus demergitus Fenner, 1978 (uncertain > unassessed)
236. Species Coscinodiscus densus Grove & Sturt manuscript in Rattray, 1890 (uncertain > unassessed)
237. Species Coscinodiscus denticulatus Castracane, 1886 (uncertain > unassessed)
238. Species Coscinodiscus depressus Gregory manuscript in Rattray, 1890 (uncertain > unassessed)
239. Species Coscinodiscus detritus Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
240. Species Coscinodiscus devius Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
241. Species Coscinodiscus dichotomus Brun, 1896 (uncertain > unassessed)
242. Species Coscinodiscus difficilis Karsten, 1907 (uncertain > unassessed)
243. Species Coscinodiscus dimorphus Castracane, 1886 (uncertain > unassessed)
244. Species Coscinodiscus disciger Ehrenberg, 1843 (uncertain > unassessed)
245. Species Coscinodiscus discoplea Ehrenberg, 1854 (uncertain > unassessed)
246. Species Coscinodiscus dispersepunctatus Hajós, 1968 (uncertain > unassessed)
247. Species Coscinodiscus dissonus Schulz, 1935 accepted as Eupyxidicula dissona (P.F.F.Schulz) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
248. Species Coscinodiscus distinctus Long, Fuge & Smith, 1946 (uncertain > unassessed)
249. Species Coscinodiscus divisus Grunow, 1878 (uncertain > unassessed)
250. Species Coscinodiscus doljensis Pantocsek, 1886 (uncertain > unassessed)
251. Species Coscinodiscus domifactus Hendey, 1958 (uncertain > unassessed)
252. Species Coscinodiscus dubius Rattray, 1890 (uncertain > unassessed)
253. Species Coscinodiscus duplex Long, Fuge & Smith, 1946 (uncertain > unassessed)
254. Species Coscinodiscus duplex Z.I.Glezer (uncertain > unassessed)
255. Species Coscinodiscus duriusculus Rattray, 1890 (uncertain > unassessed)
256. Species Coscinodiscus echinatus Rattray, 1890 (uncertain > unassessed)
257. Species Coscinodiscus egregius Rattray, 1890 (uncertain > unassessed)
258. Species Coscinodiscus ehrenbergii O'Meara, 1875 (uncertain > unassessed)
259. Species Coscinodiscus elegans Greville, 1866 (uncertain > unassessed)
260. Species Coscinodiscus elegantulus Greville, 1861 (uncertain > unassessed)
261. Species Coscinodiscus ellipticus Grunow, 1867 (1870) (uncertain > unassessed)
262. Species Coscinodiscus ellipticus Hajós, 1973 (uncertain > unassessed)
263. Species Coscinodiscus elongatus Grunow in Van Heurck, 1883 (uncertain > unassessed)
264. Species Coscinodiscus endoi Kanaya, 1959 (uncertain > unassessed)
265. Species Coscinodiscus epiphanes Rattray, 1890 (uncertain > unassessed)
266. Species Coscinodiscus eta Karsten, 1907 (uncertain > unassessed)
267. Species Coscinodiscus euryomma Schmidt in Schmidt et al., 1891 (uncertain > unassessed)
268. Species Coscinodiscus evermanni Hanna & Grant, 1926 (uncertain > unassessed)
269. Species Coscinodiscus exasperans Rattray, 1890 (uncertain > unassessed)
270. Species Coscinodiscus exceptus VanLandingham, 1968 (uncertain > unassessed)
271. Species Coscinodiscus expectus VanLandingham, 1968 (uncertain > unassessed)
272. Species Coscinodiscus extravagans Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
273. Species Coscinodiscus exutus Rattray, 1890 (uncertain > unassessed)
274. Species Coscinodiscus fallax (Meunier) Cleve-Euler, 1951 accepted as Thalassiosira fallax Meunier, 1910 (uncertain > unassessed)
275. Species Coscinodiscus fasciatus Ehrenberg, 1855 (uncertain > unassessed)
276. Species Coscinodiscus fasciculatus Schmidt, 1878 (uncertain > unassessed)
277. Species Coscinodiscus favorabilis Hajós, 1973 (uncertain > unassessed)
278. Species Coscinodiscus favus Frenguelli, 1936 (uncertain > unassessed)
279. Species Coscinodiscus fenestratus Ehrenberg, 1854 (uncertain > unassessed)
280. Species Coscinodiscus filiformis Karsten, 1905 (uncertain > unassessed)
281. Species Coscinodiscus fimbriatus-limbatus Ehrenberg, 1854 (uncertain > unassessed)
282. Species Coscinodiscus finicus Misra, 1956 (uncertain > unassessed)
283. Species Coscinodiscus flabellatus Rubina, 1976 (uncertain > unassessed)
284. Species Coscinodiscus flagrans Rattray, 1890 (uncertain > unassessed)
285. Species Coscinodiscus flavicans Ehrenberg, 1854 (uncertain > unassessed)
286. Species Coscinodiscus flexilis Rattray, 1890 (uncertain > unassessed)
287. Species Coscinodiscus florescens Grunow in Rattray, 1890 (uncertain > unassessed)
288. Species Coscinodiscus floridulus Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
289. Species Coscinodiscus fluviatilis (F.Hustedt) Cleve-Euler, 1951 accepted as Thalassiosira fluviatilis f. fluviatilis Hustedt, 1926 (uncertain > unassessed)
290. Species Coscinodiscus foraminosus Greville manuscript in Coll. British Museum ex Rattray, 1890 (uncertain > unassessed)
291. Species Coscinodiscus fragilissimus Grunow in Van Heurck, 1883 (uncertain > unassessed)
292. Species Coscinodiscus frigidus A.P.Jousé, 1965 (uncertain > unassessed)
293. Species Coscinodiscus fulguralis Brun, 1891 (uncertain > unassessed)
294. Species Coscinodiscus furcatus Karsten, 1905 (uncertain > unassessed)
295. Species Coscinodiscus fuscus G.Norman, 1861 (uncertain > unassessed)
296. Species Coscinodiscus gainii M. Peragallo, 1921 (uncertain > unassessed)
297. Species Coscinodiscus galapagensis (Grunow in Van Heurck) Rattray, 1890 accepted as Coscinodiscus griseus var. gallopagensis Grunow in Van Heurck, 1883 (uncertain > unassessed)
298. Species Coscinodiscus galapagensis Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
299. Species Coscinodiscus gamma Karsten, 1907 (uncertain > unassessed)
300. Species Coscinodiscus gazellae C.Janisch ex Grunow, 1879 (uncertain > unassessed)
301. Species Coscinodiscus gelatinosus (Cleve) Lemmermann (uncertain > unassessed)
302. Species Coscinodiscus gerlachii Van Heurck, 1909 (uncertain > unassessed)
303. Species Coscinodiscus glaberrimus Rattray, 1890 (uncertain > unassessed)
304. Species Coscinodiscus globosus Hajós, 1968 (uncertain > unassessed)
305. Species Coscinodiscus gracilentus Rattray, 1890 (uncertain > unassessed)
306. Species Coscinodiscus gracilis Karsten, 1905 (uncertain > unassessed)
307. Species Coscinodiscus graecus Kützing accepted as Discoplea graeca Ehrenberg, 1840 accepted as Lindavia graeca (Ehrenberg) Nakov et al., 2015 (uncertain > unassessed)
308. Species Coscinodiscus grandenucleatus Karsten, 1905 (uncertain > unassessed)
309. Species Coscinodiscus granulatus Ehrenberg, 1845 (uncertain > unassessed)
310. Species Coscinodiscus gravidus (Cleve) Cleve-Euler, 1951 accepted as Thalassiosira gravida f. gravida Cleve, 1896 (uncertain > unassessed)
311. Species Coscinodiscus grayianus Rattray, 1890 (uncertain > unassessed)
312. Species Coscinodiscus gregorianus O' Meara, 1867 (uncertain > unassessed)
313. Species Coscinodiscus gregorii O'Meara, 1876 (uncertain > unassessed)
314. Species Coscinodiscus grossheimii Gleser in Scheschukova & Gleser, 1962 (uncertain > unassessed)
315. Species Coscinodiscus groveanus Rattray, 1890 (uncertain > unassessed)
316. Species Coscinodiscus guineensis Grunow, 1884 (uncertain > unassessed)
317. Species Coscinodiscus guineensis Karsten, 1905 (uncertain > unassessed)
318. Species Coscinodiscus gyratus Janisch, 1888 (uncertain > unassessed)
319. Species Coscinodiscus hainanensis Kuo, 1976 (uncertain > unassessed)
320. Species Coscinodiscus hajosiae Fenner, 1984 (uncertain > unassessed)
321. Species Coscinodiscus haradaae Pantocsek, 1892 (uncertain > unassessed)
322. Species Coscinodiscus heliozoides Siddall, 1912 (uncertain > unassessed)
323. Species Coscinodiscus heteromorphus Rattray, 1890 (uncertain > unassessed)
324. Species Coscinodiscus heteroporus Ehrenberg, 1844 (uncertain > unassessed)
325. Species Coscinodiscus heterostigma Ehrenberg, 1872 (uncertain > unassessed)
326. Species Coscinodiscus hexagonus Cheng & Chin, 1980 (uncertain > unassessed)
327. Species Coscinodiscus hirosakiensis Kanaya, 1959 (uncertain > unassessed)
328. Species Coscinodiscus hirtulus (Grunow in Van Heurck) Rattray, 1890 accepted as Cestodiscus hirtulus Grunow in Van Heurck, 1883 † (uncertain > unassessed)
329. Species Coscinodiscus hispidulus Pantocsek, 1889 (uncertain > unassessed)
330. Species Coscinodiscus hokkaidoensis Okuno, 1959 (uncertain > unassessed)
331. Species Coscinodiscus horridus Karsten, 1905 (uncertain > unassessed)
332. Species Coscinodiscus humilis Rattray, 1890 (uncertain > unassessed)
333. Species Coscinodiscus hustedtii Müller-Melchers, 1953/1955 (uncertain > unassessed)
334. Species Coscinodiscus hyalinus Grunow, 1880 (uncertain > unassessed)
335. Species Coscinodiscus hyperboreus Grunow accepted as Coscinodiscus lacustris var. hyperborea (Grunow) Rattray, 1890 (uncertain > unassessed)
336. Species Coscinodiscus ildicoi Hajós, 1974 (uncertain > unassessed)
337. Species Coscinodiscus imbertii E. Manguin, 1960 (uncertain > unassessed)
338. Species Coscinodiscus immaculatus Hanna, 1927 (uncertain > unassessed)
339. Species Coscinodiscus imperator Janisch ms. in Rattray, 1890 (uncertain > unassessed)
340. Species Coscinodiscus impolitus Rattray, 1890 (uncertain > unassessed)
341. Species Coscinodiscus inaequalis Grove & Sturt, 1887 (uncertain > unassessed)
342. Species Coscinodiscus inaequisculptus Rattray, 1890 (uncertain > unassessed)
343. Species Coscinodiscus incertus Leuduger-Fortmorel, 1898 (uncertain > unassessed)
344. Species Coscinodiscus incertus Karsten, 1907 (uncertain > unassessed)
345. Species Coscinodiscus inclusus Rattray, 1890 (uncertain > unassessed)
346. Species Coscinodiscus incompositus Boyer, 1922 (uncertain > unassessed)
347. Species Coscinodiscus incomptus Nygaard, 1932 (uncertain > unassessed)
348. Species Coscinodiscus increscens Karsten, 1907 (uncertain > unassessed)
349. Species Coscinodiscus incretus Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
350. Species Coscinodiscus incurvus Karsten, 1905 (uncertain > unassessed)
351. Species Coscinodiscus indicus Ehrenberg, 1854 (uncertain > unassessed)
352. Species Coscinodiscus indistinctus Karsten, 1905 (uncertain > unassessed)
353. Species Coscinodiscus inexpectatus Rattray, 1890 (uncertain > unassessed)
354. Species Coscinodiscus inflatus Karsten, 1905 (uncertain > unassessed)
355. Species Coscinodiscus inordinatus Long, Fuge & Smith, 1946 (uncertain > unassessed)
356. Species Coscinodiscus inornatus Karsten, 1905 (uncertain > unassessed)
357. Species Coscinodiscus inscriptus Karsten, 1907 (uncertain > unassessed)
358. Species Coscinodiscus insulindicus Reinhold, 1937 (uncertain > unassessed)
359. Species Coscinodiscus insutus Rattray, 1890 (uncertain > unassessed)
360. Species Coscinodiscus interlineatus Rattray, 1890 (uncertain > unassessed)
361. Species Coscinodiscus intermedius Ehrenberg, 1854 (uncertain > unassessed)
362. Species Coscinodiscus intermittens Karsten, 1905 (uncertain > unassessed)
363. Species Coscinodiscus intermixtus Rattray, 1890 (uncertain > unassessed)
364. Species Coscinodiscus intersectus Brun, 1891 (uncertain > unassessed)
365. Species Coscinodiscus intramarginatus Hajós, 1973 (uncertain > unassessed)
366. Species Coscinodiscus irradiatus Harting, 1864 (uncertain > unassessed)
367. Species Coscinodiscus irregularis Rattray, 1890 (uncertain > unassessed)
368. Species Coscinodiscus isoporus Ehrenberg, 1854 (uncertain > unassessed)
369. Species Coscinodiscus jambori Hajós, 1971 (uncertain > unassessed)
370. Species Coscinodiscus janus Castracane, 1886 accepted as Charcotiella janus (Castrac.) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
371. Species Coscinodiscus japonicus Pantocsek, 1892 (uncertain > unassessed)
372. Species Coscinodiscus javanensis Grunow in Cleve & Möller, 1878 (uncertain > unassessed)
373. Species Coscinodiscus jeremianus Boyer, 1922 (uncertain > unassessed)
374. Species Coscinodiscus jimboi Pantocsek, 1892 (uncertain > unassessed)
375. Species Coscinodiscus joergensenii Ostenfeld, 1910 (uncertain > unassessed)
376. Species Coscinodiscus johnsonianus (Greville) Rattray, 1890 accepted as Cestodiscus johnsonianus Greville, 1865 † (uncertain > unassessed)
377. Species Coscinodiscus josefinus Grunow, 1884 (uncertain > unassessed)
378. Species Coscinodiscus karstenii Sournia, 1968 (uncertain > unassessed)
379. Species Coscinodiscus karstenii Woodhead & Tweed, 1960 (uncertain > unassessed)
380. Species Coscinodiscus karstenii VanLandingham, 1968 (uncertain > unassessed)
381. Species Coscinodiscus kerguelensis Karsten, 1905 (uncertain > unassessed)
382. Species Coscinodiscus kinkerianus Truan y Luard & Witt, 1888 (uncertain > unassessed)
383. Species Coscinodiscus kochii Pantocsek, 1886 (uncertain > unassessed)
384. Species Coscinodiscus kolbei A.P.Jousé, 1965 (uncertain > unassessed)
385. Species Coscinodiscus kruizingai Reinhold, 1937 (uncertain > unassessed)
386. Species Coscinodiscus kryophilus Grunow, 1884 (uncertain > unassessed)
387. Species Coscinodiscus kurzii Grunow, 1888 (uncertain > unassessed)
388. Species Coscinodiscus kusnetzkianus Pantocsek, 1892 (uncertain > unassessed)
389. Species Coscinodiscus labyrinthus Roper, 1858 (uncertain > unassessed)
390. Species Coscinodiscus lactucae-patella Bone & Gosden, 1967 (uncertain > unassessed)
391. Species Coscinodiscus lacunosus A. Berg, 1952 (uncertain > unassessed)
392. Species Coscinodiscus laevis Karsten, 1905 (uncertain > unassessed)
393. Species Coscinodiscus lanceolatus Castracane, 1886 (uncertain > unassessed)
394. Species Coscinodiscus latimarginatus Guo, 1981 (uncertain > unassessed)
395. Species Coscinodiscus levanderi (Van Goor) Cleve-Euler, 1951 accepted as Thalassiosira levanderi van Goor, 1924 (uncertain > unassessed)
396. Species Coscinodiscus limbatus Ehrenberg, 1840 (uncertain > unassessed)
397. Species Coscinodiscus lineatus Ehrenberg, 1841 (uncertain > unassessed)
398. Species Coscinodiscus lineolatus Ehrenberg, 1872 (1873) (uncertain > unassessed)
399. Species Coscinodiscus liocentrum Ehrenberg, 1871 (uncertain > unassessed)
400. Species Coscinodiscus litos Hohn & Hellerman, 1966 (uncertain > unassessed)
401. Species Coscinodiscus lobatus Barker & Meakin, 1946 (uncertain > unassessed)
402. Species Coscinodiscus lobatus Rubina, 1967 (uncertain > unassessed)
403. Species Coscinodiscus lohmanites VanLandingham, 1968 (uncertain > unassessed)
404. Species Coscinodiscus longi Reinhold, 1937 (uncertain > unassessed)
405. Species Coscinodiscus longispinus Grunow in Rattray, 1890 (uncertain > unassessed)
406. Species Coscinodiscus luctuosus Grove manuscript in Rattray, 1890 (uncertain > unassessed)
407. Species Coscinodiscus ludovicianus Rattray, 1890 (uncertain > unassessed)
408. Species Coscinodiscus lunae Ehrenberg, 1844 (uncertain > unassessed)
409. Species Coscinodiscus lunatus Grove manuscript in Rattray, 1890 (uncertain > unassessed)
410. Species Coscinodiscus lutescens Rattray, 1890 (uncertain > unassessed)
411. Species Coscinodiscus luxuriosus Rattray, 1890 (uncertain > unassessed)
412. Species Coscinodiscus macraeanus Greville, 1865 (uncertain > unassessed)
413. Species Coscinodiscus maculosus Long, Fuge & Smith, 1946 (uncertain > unassessed)
414. Species Coscinodiscus margaritaceus Castracane, 1886 (uncertain > unassessed)
415. Species Coscinodiscus marginatus Ehrenberg, 1844 (uncertain > unassessed)
416. Species Coscinodiscus marginulatus Grunow in Schmidt et al., 1878 (uncertain > unassessed)
417. Species Coscinodiscus marylandicus Grunow in Cleve & Möller, 1879 (uncertain > unassessed)
418. Species Coscinodiscus matraensis Hajós, 1968 (uncertain > unassessed)
419. Species Coscinodiscus mecsekensis Hajós, 1973 (uncertain > unassessed)
420. Species Coscinodiscus megacentrum Grove manuscript in Rattray, 1890 (uncertain > unassessed)
421. Species Coscinodiscus megacoccus Castracane, 1886 (uncertain > unassessed)
422. Species Coscinodiscus megalomma Schmidt in Schmidt et al., 1891 (uncertain > unassessed)
423. Species Coscinodiscus megaporus Ehrenberg, 1861 (uncertain > unassessed)
424. Species Coscinodiscus mesacmaeus Ehrenberg, 1854 (uncertain > unassessed)
425. Species Coscinodiscus mesodictyon Ehrenberg, 1854 (uncertain > unassessed)
426. Species Coscinodiscus micans Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
427. Species Coscinodiscus microcentrum Ehrenberg, 1872 (uncertain > unassessed)
428. Species Coscinodiscus minimus Karsten, 1905 (uncertain > unassessed)
429. Species Coscinodiscus minor Ehrenberg, 1840 (uncertain > unassessed)
430. Species Coscinodiscus minuens Rattray, 1890 (uncertain > unassessed)
431. Species Coscinodiscus minutellus Rattray, 1890 (uncertain > unassessed)
432. Species Coscinodiscus minutifasciculatus Kuo, 1976 (uncertain > unassessed)
433. Species Coscinodiscus minutiosus Karsten, 1905 (uncertain > unassessed)
434. Species Coscinodiscus minutus Kützing, 1844 (uncertain > unassessed)
435. Species Coscinodiscus miocaenicus Krasske, 1934 (uncertain > unassessed)
436. Species Coscinodiscus miocenicus Schrader, 1973 (uncertain > unassessed)
437. Species Coscinodiscus mirabilis Jousé, 1955 (uncertain > unassessed)
438. Species Coscinodiscus mirificus Castracane, 1886 (uncertain > unassessed)
439. Species Coscinodiscus modestus Rattray, 1890 (uncertain > unassessed)
440. Species Coscinodiscus moelleri A.Schmidt accepted as Eupyxidicula moelleri (A.W.F.Schmidt) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
441. Species Coscinodiscus moholensis Schrader, 1974 (uncertain > unassessed)
442. Species Coscinodiscus monicae (Grunow) Rattray, 1890 accepted as Coscinodiscus janischii var. monicae Grunow, 1884 (uncertain > unassessed)
443. Species Coscinodiscus moniliformis Pavillard, 1930 (uncertain > unassessed)
444. Species Coscinodiscus monodon Mereschkowsky, 1902-1903 (uncertain > unassessed)
445. Species Coscinodiscus moravicus Grunow in Schmidt et al., 1888 (uncertain > unassessed)
446. Species Coscinodiscus morenoensis Hanna, 1927 (uncertain > unassessed)
447. Species Coscinodiscus morsianus (Grunow) Sims, 1989 accepted as Coscinodiscus oculusiridis var. morsiana Grunow, 1884 (uncertain > unassessed)
448. Species Coscinodiscus moseleyi O'Meara, 1875 (uncertain > unassessed)
449. Species Coscinodiscus mossianus Greville, 1865 (uncertain > unassessed)
450. Species Coscinodiscus mutabilis Strelnikova, 1974 (uncertain > unassessed)
451. Species Coscinodiscus nankoorensis Desikachary & Ranjitha Devi, 1986 (uncertain > unassessed)
452. Species Coscinodiscus naviculoides Truan y Luard & Witt, 1888 (uncertain > unassessed)
453. Species Coscinodiscus nebula Ehrenberg, 1872 (uncertain > unassessed)
454. Species Coscinodiscus neglectus Karsten, 1905 (uncertain > unassessed)
455. Species Coscinodiscus neogradensis Pantocsek, 1886 (uncertain > unassessed)
456. Species Coscinodiscus neoradiatus Cleve-Euler, 1941 (uncertain > unassessed)
457. Species Coscinodiscus nobilis Grunow, 1879 (uncertain > unassessed)
458. Species Coscinodiscus nodatus Mann, 1937 (uncertain > unassessed)
459. Species Coscinodiscus nodulolineatus Hendey, 1958 (uncertain > unassessed)
460. Species Coscinodiscus nordenskioeldii (P.T. Cleve) Cleve-Euler, 1951 accepted as Thalassiosira nordenskioeldii f. nordenskioeldii Cleve, 1873 (uncertain > unassessed)
461. Species Coscinodiscus normanianus Greville, 1866 (uncertain > unassessed)
462. Species Coscinodiscus normanii Gregory ex Greville, 1859 (uncertain > unassessed)
463. Species Coscinodiscus normannicus Gregory ex Greville Gregory in Van Heurck, 1883 accepted as Coscinodiscus normanii Gregory ex Greville, 1859 (uncertain > unassessed)
464. Species Coscinodiscus norwegicus Schrader in Schrader & Fenner, 1976 (uncertain > unassessed)
465. Species Coscinodiscus notabilis Rattray, 1890 (uncertain > unassessed)
466. Species Coscinodiscus oamaruensis Grove & Sturt, 1887 (uncertain > unassessed)
467. Species Coscinodiscus obliquus Rattray, 1890 (uncertain > unassessed)
468. Species Coscinodiscus obnubilus Rattray, 1890 (uncertain > unassessed)
469. Species Coscinodiscus oceanicus (Ehrenberg) Kützing, 1849 accepted as Endictya oceanica Ehrenberg, 1845 (uncertain > unassessed)
470. Species Coscinodiscus oculoides Karsten, 1905 (uncertain > unassessed)
471. Species Coscinodiscus oculus-iridis (Ehrenberg) Ehrenberg, 1840 (uncertain > unassessed)
472. Species Coscinodiscus odontophorus Grunow, 1884 accepted as Coscinodiscus subtilis var. odontophorus Grunow, 1884 (uncertain > unassessed)
473. Species Coscinodiscus oestrupii Van Heurck, 1909 (uncertain > unassessed)
474. Species Coscinodiscus okamurae Skvortzow, 1932 (uncertain > unassessed)
475. Species Coscinodiscus okunoi Iwahashi, 1936 (uncertain > unassessed)
476. Species Coscinodiscus oligocenicus Jousé, 1973 (uncertain > unassessed)
477. Species Coscinodiscus oliverianus (O'Meara) Cleve, 1901 (uncertain > unassessed)
478. Species Coscinodiscus oppositus Karsten, 1905 (uncertain > unassessed)
479. Species Coscinodiscus oruetae Azpeitia Moros, 1911 (uncertain > unassessed)
480. Species Coscinodiscus ovalis Roper, 1858 (uncertain > unassessed)
481. Species Coscinodiscus ovicentrum Grove in Schmidt et al., 1893 (uncertain > unassessed)
482. Species Coscinodiscus paleaceus (Grunow in Van Heurck) Rattray, 1890 accepted as Stoschia paleacea Grunow in Van Heurck, 1883 † (uncertain > unassessed)
483. Species Coscinodiscus pantocsekii (Grunow in Pantocsek) Schütt, 1896 accepted as Anisodiscus pantocsekii f. pantocsekii Grunow in Pantocsek, 1886 (uncertain > unassessed)
484. Species Coscinodiscus pantocsekites VanLandingham, 1968 (uncertain > unassessed)
485. Species Coscinodiscus papillosus Hajós, 1968 (uncertain > unassessed)
486. Species Coscinodiscus papuanus Castracane, 1886 (uncertain > unassessed)
487. Species Coscinodiscus papulosus Forti, 1910 (uncertain > unassessed)
488. Species Coscinodiscus paradoxus Cheng & Chin, 1980 (uncertain > unassessed)
489. Species Coscinodiscus parvus Hajós, 1971 (uncertain > unassessed)
490. Species Coscinodiscus parvus (Grunow) A.Henckel (uncertain > unassessed)
491. Species Coscinodiscus patellaeformis Greville, 1861 (uncertain > unassessed)
492. Species Coscinodiscus patera Castracane, 1886 (uncertain > unassessed)
493. Species Coscinodiscus patina Ehrenberg, 1839 (uncertain > unassessed)
494. Species Coscinodiscus pauper Truan y Luard & Witt, 1888 (uncertain > unassessed)
495. Species Coscinodiscus pavillardii Forti, 1922 (uncertain > unassessed)
496. Species Coscinodiscus pectinatus Rattray, 1890 (uncertain > unassessed)
497. Species Coscinodiscus pelagicus N.Woodhead & R.D.Tweed, 1960 (uncertain > unassessed)
498. Species Coscinodiscus pellucidus Grunow in Van Heurck, 1883 (uncertain > unassessed)
499. Species Coscinodiscus pentas (Ehrenberg) A.Mann, 1907 accepted as Symbolophora pentas Ehrenberg, 1844 (uncertain > unassessed)
500. Species Coscinodiscus peragalloi Pantocsek, 1892 (uncertain > unassessed)
501. Species Coscinodiscus perminutus Rattray, 1890 (uncertain > unassessed)
502. Species Coscinodiscus peruanus Grunow in Schmidt et al., 1878 (uncertain > unassessed)
503. Species Coscinodiscus planetophorus Meister, 1932 (uncertain > unassessed)
504. Species Coscinodiscus planithecus Kuo, 1976 (uncertain > unassessed)
505. Species Coscinodiscus planiusculus Rattray, 1890 (uncertain > unassessed)
506. Species Coscinodiscus planus Karsten, 1905 (uncertain > unassessed)
507. Species Coscinodiscus plicatulus Grunow, 1884 (uncertain > unassessed)
508. Species Coscinodiscus polurrhaptos Rattray, 1890 (uncertain > unassessed)
509. Species Coscinodiscus polyacanthus auct. (uncertain > unassessed)
510. Species Coscinodiscus polyactis Cleve-Euler, 1941 (uncertain > unassessed)
511. Species Coscinodiscus polychordus Gran, 1897 (uncertain > unassessed)
512. Species Coscinodiscus polycora Ehrenberg, 1855 (uncertain > unassessed)
513. Species Coscinodiscus polygonus Castracane, 1886 (uncertain > unassessed)
514. Species Coscinodiscus polymorphus Strelnikova, 1974 (uncertain > unassessed)
515. Species Coscinodiscus polyradiatus Castracane, 1886 (uncertain > unassessed)
516. Species Coscinodiscus polystigma Ehrenberg, 1843 (uncertain > unassessed)
517. Species Coscinodiscus praelineatus Jousé, 1968 (uncertain > unassessed)
518. Species Coscinodiscus praenodulifer Barron, 1983 (uncertain > unassessed)
519. Species Coscinodiscus praepaleaceus Schrader, 1973 (uncertain > unassessed)
520. Species Coscinodiscus praetextus Janisch, 1888 (uncertain > unassessed)
521. Species Coscinodiscus praetor Grove manuscript in Rattray, 1890 (uncertain > unassessed)
522. Species Coscinodiscus praeyabei Schrader, 1973 (uncertain > unassessed)
523. Species Coscinodiscus princeps Jousé, 1973 (uncertain > unassessed)
524. Species Coscinodiscus problematicus VanLandingham, 1968 (uncertain > unassessed)
525. Species Coscinodiscus profundus Ehrenberg, 1854 (uncertain > unassessed)
526. Species Coscinodiscus proteus (Grunow) Rattray accepted as Cestodiscus proteus Hardman ex Grunow in Van Heurck, 1883 † (uncertain > unassessed)
527. Species Coscinodiscus proximus Makarova, 1961 (uncertain > unassessed)
528. Species Coscinodiscus pseudanastomosans Desikachary, Gowthaman & Latha, 1987 (uncertain > unassessed)
529. Species Coscinodiscus pseudoactinocyclus Forti, 1913 (uncertain > unassessed)
530. Species Coscinodiscus pseudodenticulatus Hustedt, 1958 (uncertain > unassessed)
531. Species Coscinodiscus pseudolineatus Pantocsek, 1886 (uncertain > unassessed)
532. Species Coscinodiscus pseudonitidulus Karsten, 1905 (uncertain > unassessed)
533. Species Coscinodiscus pseudoradiolatus M. Peragallo, 1921 (uncertain > unassessed)
534. Species Coscinodiscus pulchellus Greville accepted as Cestodiscus pulchellus var. pulchellus Greville, 1866 (uncertain > unassessed)
535. Species Coscinodiscus pulcherrimus Rattray, 1890 (uncertain > unassessed)
536. Species Coscinodiscus pumilio Ehrenberg, 1872 (uncertain > unassessed)
537. Species Coscinodiscus pumilus Grunow in Rattray, 1890 (uncertain > unassessed)
538. Species Coscinodiscus punctiger (Castracane) H.Peragallo, 1889 accepted as Ethmodiscus punctiger Castracane, 1886 (uncertain > unassessed)
539. Species Coscinodiscus punctulatus Gregory, 1857 (uncertain > unassessed)
540. Species Coscinodiscus pusillus Grove ms. in Rattray, 1890 (uncertain > unassessed)
541. Species Coscinodiscus pustulatus Mann, 1907 (uncertain > unassessed)
542. Species Coscinodiscus pyrenoidophorus Karsten, 1905 (uncertain > unassessed)
543. Species Coscinodiscus pyxidicula Kützing, 1849 (uncertain > unassessed)
544. Species Coscinodiscus pyxis Ehrenberg, 1854 (uncertain > unassessed)
545. Species Coscinodiscus quadrifarius Manguin, 1960 (uncertain > unassessed)
546. Species Coscinodiscus quindenarius Ehrenberg, 1854 accepted as Actinocyclus quindenarius Ehrenberg, 1840 (uncertain > unassessed)
547. Species Coscinodiscus radiatus Ehrenberg, 1840 (uncertain > unassessed)
548. Species Coscinodiscus radiofurcatus MacKay in L.W. Bailey, MacKay & Kendall, 1915 (uncertain > unassessed)
549. Species Coscinodiscus radiolatus Ehrenberg, 1854 (uncertain > unassessed)
550. Species Coscinodiscus radiopunctatus Hajós, 1968 (uncertain > unassessed)
551. Species Coscinodiscus radiopunctatus Harting, 1864 (uncertain > unassessed)
552. Species Coscinodiscus rectangulus Karsten, 1905 (uncertain > unassessed)
553. Species Coscinodiscus regina G.C.Wallich (uncertain > unassessed)
554. Species Coscinodiscus relatus Bailey, 1924 (uncertain > unassessed)
555. Species Coscinodiscus reniformis Castracane, 1886 (uncertain > unassessed)
556. Species Coscinodiscus rex Wallich in Schmidt, 1888 (uncertain > unassessed)
557. Species Coscinodiscus rhombicus Castracane, 1886 (uncertain > unassessed)
558. Species Coscinodiscus ritscheri Hustedt, 1958 (uncertain > unassessed)
559. Species Coscinodiscus rotula Grunow, 1878 (uncertain > unassessed)
560. Species Coscinodiscus rotulus (A.F.Meunier) Cleve-Euler, 1951 accepted as Thalassiosira rotula Meunier, 1910 accepted as Thalassiosira gravida Cleve, 1896 (uncertain > unassessed)
561. Species Coscinodiscus rotundus Karsten, 1905 (uncertain > unassessed)
562. Species Coscinodiscus rudis Castracane, 1886 (uncertain > unassessed)
563. Species Coscinodiscus salisburyanus Lohman, 1948 (uncertain > unassessed)
564. Species Coscinodiscus sarmaticus Pantocsek, 1886 (uncertain > unassessed)
565. Species Coscinodiscus sawamurae Akiba, 1980 (uncertain > unassessed)
566. Species Coscinodiscus schimperi Karsten, 1905 (uncertain > unassessed)
567. Species Coscinodiscus scintillans Greville, 1863 (uncertain > unassessed)
568. Species Coscinodiscus scitulus Mann, 1925 (uncertain > unassessed)
569. Species Coscinodiscus secernendus Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
570. Species Coscinodiscus sectoralis Gleser, Dolmatova & Lupikina, 1986 (uncertain > unassessed)
571. Species Coscinodiscus sellatus Jousé, 1973 (uncertain > unassessed)
572. Species Coscinodiscus semipennatus Grunow, 1884 (uncertain > unassessed)
573. Species Coscinodiscus septentrionalis Grunow, 1884 (uncertain > unassessed)
574. Species Coscinodiscus sexradiatus Jousé, 1951 (uncertain > unassessed)
575. Species Coscinodiscus shantouensis Kuo, 1976 (uncertain > unassessed)
576. Species Coscinodiscus sheshukovaensis Hajós, 1973 (uncertain > unassessed)
577. Species Coscinodiscus signatus A.Mann, 1937 (uncertain > unassessed)
578. Species Coscinodiscus simbirskianus Grunow, 1884 (uncertain > unassessed)
579. Species Coscinodiscus similis Karsten, 1905 (uncertain > unassessed)
580. Species Coscinodiscus simonis Karsten, 1905 (uncertain > unassessed)
581. Species Coscinodiscus sinensis O'Meara, 1879 (uncertain > unassessed)
582. Species Coscinodiscus sinicus Skvortzow, 1946 (uncertain > unassessed)
583. Species Coscinodiscus sol C.G.Wallich, 1860 (uncertain > unassessed)
584. Species Coscinodiscus solitarius Karsten, 1905 (uncertain > unassessed)
585. Species Coscinodiscus soloensis Reinhold, 1937 (uncertain > unassessed)
586. Species Coscinodiscus spiniferus (Grove & Sturt) Grove & Sturt ex Grunow, 1888 accepted as Coscinodiscus elegans var. spinifera Grove & Sturt, 1887 (uncertain > unassessed)
587. Species Coscinodiscus spinosus Chin, 1965 (uncertain > unassessed)
588. Species Coscinodiscus spinuligerus (Grunow) Rattray, 1890 accepted as Coscinodiscus asteromphalus var. spinuligera Grunow, 1884 (uncertain > unassessed)
589. Species Coscinodiscus spinulosus Ehrenberg, 1845 (uncertain > unassessed)
590. Species Coscinodiscus spiralis Karsten, 1905 (uncertain > unassessed)
591. Species Coscinodiscus splendidulus Rattray, 1890 (uncertain > unassessed)
592. Species Coscinodiscus splendidus Greville, 1865 (uncertain > unassessed)
593. Species Coscinodiscus stefaninii G. Frenguelli, 1933 (uncertain > unassessed)
594. Species Coscinodiscus steinyi Hanna, 1927 (uncertain > unassessed)
595. Species Coscinodiscus stellaris Tempère & Peragallo, 1912 (uncertain > unassessed)
596. Species Coscinodiscus stellatus Kitton, 1871 (uncertain > unassessed)
597. Species Coscinodiscus stelliger Grunow in Schmidt et al., 1878 (uncertain > unassessed)
598. Species Coscinodiscus stephanopyxioides Karsten, 1905 (uncertain > unassessed)
599. Species Coscinodiscus stoschii A. Schmidt, 1889 (uncertain > unassessed)
600. Species Coscinodiscus striatus Kützing, 1844 (uncertain > unassessed)
601. Species Coscinodiscus strigillatus Witt in Schmidt et al., 1888 accepted as Haynaldiopsis strigillata (O.N.Witt) S.Blanco & C.E.Wetzel, 2016 (uncertain > unassessed)
602. Species Coscinodiscus subangulatus Grunow, 1884 (uncertain > unassessed)
603. Species Coscinodiscus subapiculatus Hanna in Hertlein, 1933 (uncertain > unassessed)
604. Species Coscinodiscus subareolatus Rattray, 1890 (uncertain > unassessed)
605. Species Coscinodiscus subaulacodiscoidalis Rattray, 1890 (uncertain > unassessed)
606. Species Coscinodiscus subbulliens E.G.Jörgensen, 1905 (uncertain > unassessed)
607. Species Coscinodiscus subdivisus Truan y Luard & Witt, 1888 (uncertain > unassessed)
608. Species Coscinodiscus subfasciculatus Karsten, 1907 (uncertain > unassessed)
609. Species Coscinodiscus subnitidus Rattray, 1890 (uncertain > unassessed)
610. Species Coscinodiscus suboculatus Rattray, 1890 (uncertain > unassessed)
611. Species Coscinodiscus subsalsus Juhlin-Dannfelt, 1882 (uncertain > unassessed)
612. Species Coscinodiscus subtabulatus Cleve-Euler, 1951 (uncertain > unassessed)
613. Species Coscinodiscus subtilis Ehrenberg, 1841 (uncertain > unassessed)
614. Species Coscinodiscus subtilissimus Ehrenberg, 1861 (uncertain > unassessed)
615. Species Coscinodiscus subtilissimus Karsten, 1907 (uncertain > unassessed)
616. Species Coscinodiscus subvelatus Grunow in Schmidt et al., 1881 (uncertain > unassessed)
617. Species Coscinodiscus succinctus Scheschukova-Poretskaya & Gleser, 1964 (uncertain > unassessed)
618. Species Coscinodiscus suspectus Janisch in Schmidt et al., 1878 (uncertain > unassessed)
619. Species Coscinodiscus symbolophoroides Frenguelli, 1928 (uncertain > unassessed)
620. Species Coscinodiscus tabulatus Tempere & Brun in Schmidt, 1891 (uncertain > unassessed)
621. Species Coscinodiscus temperei Brun in Brun & Tempère, 1889 (uncertain > unassessed)
622. Species Coscinodiscus tenellus Ehrenberg, 1854 (uncertain > unassessed)
623. Species Coscinodiscus tener Rubina, 1967 (uncertain > unassessed)
624. Species Coscinodiscus tenerrimus Jousé, 1973 (uncertain > unassessed)
625. Species Coscinodiscus tenerrimus Ehrenberg, 1872 (uncertain > unassessed)
626. Species Coscinodiscus tenuis (Grunow in Van Heurck) Rattray, 1890 accepted as Cosmiodiscus tenuis Grunow in Van Heurck, 1883 (uncertain > unassessed)
627. Species Coscinodiscus tenuis J.W. Bailey in L.W. Bailey, 1861 (uncertain > unassessed)
628. Species Coscinodiscus tenuisculptus Rattray, 1890 (uncertain > unassessed)
629. Species Coscinodiscus tenuithecus Kuo, 1976 (uncertain > unassessed)
630. Species Coscinodiscus theskelos Rattray, 1890 (uncertain > unassessed)
631. Species Coscinodiscus theta Karsten, 1907 (uncertain > unassessed)
632. Species Coscinodiscus thorii Pavillard, 1925 (uncertain > unassessed)
633. Species Coscinodiscus thumii Cleve, 1885 (uncertain > unassessed)
634. Species Coscinodiscus transversalis Karsten, 1905 (uncertain > unassessed)
635. Species Coscinodiscus travertinorum Rochoux d'Aubert in Héribaud et al., 1920 (uncertain > unassessed)
636. Species Coscinodiscus trigonus Karsten, 1905 (uncertain > unassessed)
637. Species Coscinodiscus trinitatis (Grunow in Van Heurck) Rattray, 1890 accepted as Cestodiscus trinitatis Grunow in Van Heurck, 1883 † (uncertain > unassessed)
638. Species Coscinodiscus trioculatus F.J.R.Taylor, 1966 (uncertain > unassessed)
639. Species Coscinodiscus trochiskos Truan y Luard & Witt, 1888 (uncertain > unassessed)
640. Species Coscinodiscus trompii Cleve, 1900 (uncertain > unassessed)
641. Species Coscinodiscus tubifex Jurilj, 1957 (uncertain > unassessed)
642. Species Coscinodiscus tubiformis Tempère & Brun in Brun & Tempère, 1889 (uncertain > unassessed)
643. Species Coscinodiscus tumulus Brun, 1895 (uncertain > unassessed)
644. Species Coscinodiscus turgidus Rattray, 1890 (uncertain > unassessed)
645. Species Coscinodiscus umbonatus Castracane, 1886 (uncertain > unassessed)
646. Species Coscinodiscus umbonatus Gregory, 1857 (uncertain > unassessed)
647. Species Coscinodiscus undatus (Cleve) Grunow in Pantocsek, 1886 accepted as Actinocyclus alienus var. undatus Cleve, 1885 (uncertain > unassessed)
648. Species Coscinodiscus undulans Rattray, 1890 (uncertain > unassessed)
649. Species Coscinodiscus undulatus Castracane, 1886 (uncertain > unassessed)
650. Species Coscinodiscus undulatus Cleve, 1881 (uncertain > unassessed)
651. Species Coscinodiscus uralensis Jousé in Proschkina-Lavrenko, 1949 (uncertain > unassessed)
652. Species Coscinodiscus vacuus Rattray, 1890 (uncertain > unassessed)
653. Species Coscinodiscus valdiviae Karsten, 1905 (uncertain > unassessed)
654. Species Coscinodiscus variolatus Castracane, 1886 (uncertain > unassessed)
655. Species Coscinodiscus varius Schumann, 1867 (uncertain > unassessed)
656. Species Coscinodiscus velatus Schmidt in Schmidt et al., 1878 (uncertain > unassessed)
657. Species Coscinodiscus venulosus Castracane, 1886 (uncertain > unassessed)
658. Species Coscinodiscus verecundus A.Mann, 1907 (uncertain > unassessed)
659. Species Coscinodiscus vesiculosus Brun, 1894 (uncertain > unassessed)
660. Species Coscinodiscus vetustissimus Pantocsek (uncertain > unassessed)
661. Species Coscinodiscus vicinus Schumann, 1867 (uncertain > unassessed)
662. Species Coscinodiscus victoriae Karsten, 1905 (uncertain > unassessed)
663. Species Coscinodiscus vidovichi Müller-Melchers, 1953 (uncertain > unassessed)
664. Species Coscinodiscus vigilans Schmidt in Schmidt et al., 1888 (uncertain > unassessed)
665. Species Coscinodiscus volutus Baldauf in Baldauf & Barron, 1982 (uncertain > unassessed)
666. Species Coscinodiscus vulgaris Schumann, 1867 (uncertain > unassessed)
667. Species Coscinodiscus vulnificus Gombos, 1976 (uncertain > unassessed)
668. Species Coscinodiscus wailesii Gran & Angst, 1931 (uncertain > unassessed)
669. Species Coscinodiscus wakuraensis Ichikawa, 1960 (uncertain > unassessed)
670. Species Coscinodiscus wallichianus Grunow in Cleve & Möller, 1879 (uncertain > unassessed)
671. Species Coscinodiscus weissflogianus Pantocsek, 1903 (uncertain > unassessed)
672. Species Coscinodiscus weissflogii A. Schmidt in Schmidt et al., 1874 (uncertain > unassessed)
673. Species Coscinodiscus weissflogii Pantocsek, 1889 (uncertain > unassessed)
674. Species Coscinodiscus werffi Reinhold, 1937 (uncertain > unassessed)
675. Species Coscinodiscus weyprechtii Grunow, 1884 (uncertain > unassessed)
676. Species Coscinodiscus whampoensis Grove manuscript in Rattray, 1890 (uncertain > unassessed)
677. Species Coscinodiscus wittianus Pantocsek, 1889 (uncertain > unassessed)
678. Species Coscinodiscus woodwardii Eulenstein, 1878 (uncertain > unassessed)
679. Species Coscinodiscus yabei Kanaya, 1959 (uncertain > unassessed)
680. Species Coscinodiscus zebuensis Grunow manuscript, Rattray, 1890 (uncertain > unassessed)
681. Species Coscinodiscus zeta Karsten, 1907 (uncertain > unassessed)
682. Species Coscinodiscus zonulatus Rattray, 1890 (uncertain > unassessed)

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