1. Species Macoma astori Dall, 1909 †
2. Species Macoma balthica (Linnaeus, 1758)
3. Species Macoma brota Dall, 1916
4. Species Macoma calcarea (Gmelin, 1791)
5. Species Macoma carlottensis Whiteaves, 1880
6. Species Macoma cerina C. B. Adams, 1845
7. Species Macoma coani Kafanov & Lutaenko, 1999
8. Species Macoma contabulata (Deshayes, 1855)
9. Species Macoma crassula (Deshayes, 1855)
10. Species Macoma cuneipyga (Scarlato, 1981)
11. Species Macoma elimata Dunnill & Coan, 1968
12. Species Macoma golikovi Scarlato & Kafanov, 1988
13. Species Macoma hemicilla (Iredale, 1936)
14. Species Macoma incongrua (E. von Martens, 1865)
15. Species Macoma inquinata (Deshayes, 1855)
16. Species Macoma izurensis (Yokoyama, 1925) †
17. Species Macoma lama Bartsch, 1929
18. Species Macoma lipara Dall, 1916
19. Species Macoma loveni (A. S. Jensen, 1905)
20. Species Macoma middendorffi Dall, 1884
21. Species Macoma moesta (Deshayes, 1855)
22. Species Macoma murrayana (A. E. Salisbury, 1934)
23. Species Macoma nasuta (Conrad, 1837)
24. Species Macoma nipponica (Tokunaga, 1906)
25. Species Macoma obliqua (J. Sowerby, 1817) †
26. Species Macoma oinomikadoi Otuka, 1939
27. Species Macoma optiva (Yokoyama, 1923) †
28. Species Macoma papyracea Rennie, 1930 †
29. Species Macoma petalum (Valenciennes, 1821)
30. Species Macoma ralphi (H. J. Finlay, 1927) †
31. Species Macoma scarlatoi Kafanov & Lutaenko, 1997
32. Species Macoma sejugata (Yokoyama, 1924) †
33. Species Macoma serana (P. J. Fischer, 1921) †
34. Species Macoma shiashkotanika (Scarlato, 1981)
35. Species Macoma shiratoriensis (Matsubara, 1994)
36. Species Macoma simizuensis L. Krishtofovich, 1954 †
37. Species Macoma tokyoensis Makiyama, 1927
38. Species Macoma torelli (A. S. Jensen, 1905)
39. Species Macoma totomiensis Makiyama, 1927 †
40. Subgenus Macoma (Macalia) H. Adams, 1861 accepted as Macalia H. Adams, 1861 (original rank)
    1. Species Macoma (Macalia) bruguieri (Hanley, 1844) represented as Macalia bruguieri (Hanley, 1844)
41. Subgenus Macoma (Macoploma) Pilsbry & Olsson, 1941 accepted as Macoploma Pilsbry & Olsson, 1941
    1. Species Macoma (Macoploma) ecuadoriana Pilsbry & Olsson, 1941 accepted as Macoploma ecuadoriana (Pilsbry & Olsson, 1941)
    2. Species Macoma (Macoploma) medioamericana Olsson, 1942 accepted as Macoploma ecuadoriana (Pilsbry & Olsson, 1941)
42. Subgenus Macoma (Psammacoma) Dall, 1900 accepted as Psammacoma Dall, 1900 (unaccepted > superseded rank)
    1. Species Macoma (Psammacoma) candida (Lamarck, 1818) accepted as Psammacoma candida (Lamarck, 1818)
    2. Species Macoma (Psammacoma) carlottensis Whiteaves, 1880 accepted as Macoma carlottensis Whiteaves, 1880
    3. Species Macoma (Psammacoma) consociata (E. A. Smith, 1885) accepted as Macomopsis moluccensis (E. von Martens, 1865)
    4. Species Macoma (Psammacoma) ecuadoriana Pilsbry & Olsson, 1941 accepted as Macoploma ecuadoriana (Pilsbry & Olsson, 1941)
    5. Species Macoma (Psammacoma) elongata A. I. Korobkov, 1994 † accepted as Macoma (Psammacoma) korobkovi Kafanov, Ogasawara & Marincovich, 2001 † accepted as Psammacoma korobkovi (Kafanov, Ogasawara & Marincovich, 2001) † (unaccepted > junior homonym, invalid: junior homonym of Macoma elongata Barinov, 1992; Macoma (Psammacoma) korobkovi is a replacement name)
    6. Species Macoma (Psammacoma) elytrum Keen, 1958 accepted as Macoploma elytrum (Keen, 1958)
    7. Species Macoma (Psammacoma) extenuata Dall, 1900 accepted as Macoploma extenuata (Dall, 1900) (unaccepted > superseded combination)
    8. Species Macoma (Psammacoma) georgiana Dell, 1964 accepted as Dellius georgianus (Dell, 1964) (unaccepted > superseded combination)
    9. Species Macoma (Psammacoma) hesperus Dall, 1908 accepted as Macoploma hesperus (Dall, 1908)
    10. Species Macoma (Psammacoma) inexpectata Cosel, 1995 accepted as Macoploma inexpectata (Cosel, 1995) accepted as Psammacoma inexpectata (Cosel, 1995)
    11. Species Macoma (Psammacoma) korobkovi Kafanov, Ogasawara & Marincovich, 2001 † accepted as Psammacoma korobkovi (Kafanov, Ogasawara & Marincovich, 2001) †
    12. Species Macoma (Psammacoma) lamproleuca (Pilsbry & H. N. Lowe, 1932) accepted as Macoploma lamproleuca (Pilsbry & H. N. Lowe, 1932)
    13. Species Macoma (Psammacoma) panamensis Dall, 1900 accepted as Macoploma panamensis (Dall, 1900) (unaccepted > superseded combination)
    14. Species Macoma (Psammacoma) pseudofallax Cosel, 1995 accepted as Psammacoma pseudofallax (Cosel, 1995)
    15. Species Macoma (Psammacoma) pulleyi P. Boyer, 1969 accepted as Macoploma pulleyi (P. Boyer, 1969) (unaccepted > superseded combination)
    16. Species Macoma (Psammacoma) siliqua (C. B. Adams, 1852) accepted as Macoploma siliqua (C. B. Adams, 1852)
    17. Species Macoma (Psammacoma) tageliformis Dall, 1900 accepted as Macoploma tageliformis (Dall, 1900) (unaccepted > superseded combination)
    18. Species Macoma (Psammacoma) yoldiformis P. P. Carpenter, 1864 accepted as Macoploma yoldiformis (P. P. Carpenter, 1864)
    19. Species Macoma (Psammacoma) holmesii Dall, 1900 † (uncertain > unassessed)
    20. Species Macoma (Psammacoma) hosfordensis Mansfield, 1932 † (uncertain > unassessed)
    21. Species Macoma (Psammacoma) platensis Dall, 1922 (uncertain > unassessed)
43. Subgenus Macoma (Salmacoma) Iredale, 1929 accepted as Salmacoma Iredale, 1929
    1. Species Macoma (Salmacoma) retrorsa (G. B. Sowerby II, 1867) accepted as Macomopsis moluccensis (E. von Martens, 1865)
    2. Species Macoma (Salmacoma) vappa (Iredale, 1929) accepted as Salmacoma vappa Iredale, 1929
44. Subgenus Macoma (Scissulina) Dall, 1924 accepted as Scissulina Dall, 1924
45. Species Macoma acolasta Dall, 1921 accepted as Macoploma acolasta (Dall, 1921)
46. Species Macoma aequalis (Deshayes, 1855) accepted as Tellinides aequalis (Deshayes, 1855)
47. Species Macoma ala (Hanley, 1845) accepted as Tellina ala Hanley, 1845 accepted as Alaona ala (Hanley, 1845)
48. Species Macoma angusta E. A. Smith, 1915 accepted as Macoploma tenta (Say, 1838)
49. Species Macoma anser Oyama, 1950 accepted as Limecola contabulata (Deshayes, 1855) accepted as Macoma contabulata (Deshayes, 1855)
50. Species Macoma aurora (Hanley, 1844) accepted as Psammotreta psammotella (Lamarck, 1818)
51. Species Macoma awajiensis G. B. Sowerby III, 1914 accepted as Sylvanus lilium (Hanley, 1844)
52. Species Macoma balaustina (Linnaeus, 1758) accepted as Arcopagia balaustina (Linnaeus, 1758) accepted as Arcopella balaustina (Linnaeus, 1758)
53. Species Macoma biota Arruda & Domaneschi, 2005 accepted as Austromacoma biota (Arruda & Domaneschi, 2005)
54. Species Macoma blainvillei Melvill & Standen, 1907 (unaccepted > nomen nudum)
55. Species Macoma blairensis E. A. Smith, 1906 accepted as Psammacoma gubernaculum (Hanley, 1844)
56. Species Macoma brasiliana (Dall, 1921) accepted as Temnoconcha galathaea (Lamarck, 1818) (unaccepted > junior subjective synonym)
57. Species Macoma brevifrons (Say, 1834) accepted as Psammotreta brevifrons (Say, 1834)
58. Species Macoma bruguieri (Hanley, 1844) accepted as Macalia bruguieri (Hanley, 1844)
59. Species Macoma bruuni Nicklès, 1955 accepted as Macomopsis bruuni (Nicklès, 1955)
60. Species Macoma caledonica G. B. Sowerby III, 1914 accepted as Jitlada philippinarum (Hanley, 1844)
61. Species Macoma cancellata (G. B. Sowerby II, 1873) accepted as Rostrimacoma cancellata (G. B. Sowerby II, 1873)
62. Species Macoma candida (Lamarck, 1818) accepted as Psammacoma candida (Lamarck, 1818)
63. Species Macoma clathrata (Deshayes, 1835) accepted as Jactellina clathrata (Deshayes, 1835)
64. Species Macoma cleryana (A. d'Orbigny, 1846) accepted as Psammotreta brevifrons (Say, 1834)
65. Species Macoma commutata Monterosato, 1884 accepted as Macomangulus tenuis (da Costa, 1778) (synonym)
66. Species Macoma consociata (E. A. Smith, 1885) accepted as Macomopsis moluccensis (E. von Martens, 1865)
67. Species Macoma constricta (Bruguière, 1792) accepted as Austromacoma constricta (Bruguière, 1792) (unaccepted > superseded combination)
68. Species Macoma contaculata [sic] accepted as Macoma contabulata (Deshayes, 1855) (misspelling)
69. Species Macoma crawfordi (G. B. Sowerby III, 1892) accepted as Macomopsis crawfordi (G. B. Sowerby III, 1892)
70. Species Macoma cumana (O. G. Costa, 1830) accepted as Macomopsis cumana (O. G. Costa, 1830)
71. Species Macoma cycladiformis (Hanley, 1844) accepted as Pinguitellina cycladiformis (Hanley, 1844)
72. Species Macoma dexioptera Baxter, 1977 accepted as Rexithaerus dexioptera (Baxter, 1977)
73. Species Macoma dispar (Conrad, 1837) accepted as Scissulina dispar (Conrad, 1837)
74. Species Macoma dubia (Deshayes, 1855) accepted as Macomopsis dubia (Deshayes, 1855)
75. Species Macoma eborea Heilprin, 1890 accepted as Heterodonax bimaculatus (Linnaeus, 1758)
76. Species Macoma ecuadoriana Pilsbry & Olsson, 1941 accepted as Macoploma ecuadoriana (Pilsbry & Olsson, 1941)
77. Species Macoma edentula (Spengler, 1798) accepted as Tellinimactra edentula (Spengler, 1798)
78. Species Macoma edgari Iredale, 1915 accepted as Bartschicoma edgari (Iredale, 1915) (superseded combination)
79. Species Macoma elytrum Keen, 1958 accepted as Macoploma elytrum (Keen, 1958)
80. Species Macoma expansa P. P. Carpenter, 1864 accepted as Rexithaerus expansa (P. P. Carpenter, 1864)
81. Species Macoma extenuata Dall, 1900 accepted as Macoploma extenuata (Dall, 1900) (unaccepted > superseded combination)
82. Species Macoma fallax Bertin, 1878 accepted as Psammacoma fallax (Bertin, 1878) (original combination)
83. Species Macoma georgiana Dell, 1964 accepted as Dellius georgianus (Dell, 1964)
84. Species Macoma grandis (Hanley, 1844) accepted as Psammotreta grandis (Hanley, 1844)
85. Species Macoma gubernaculum (Hanley, 1844) accepted as Psammacoma gubernaculum (Hanley, 1844)
86. Species Macoma hakushatonensis Nomura, 1933 accepted as Abra lunella (A. Gould, 1861)
87. Species Macoma hanleyi (Dunker, 1853) accepted as Macomopsis hanleyi (Dunker, 1853)
88. Species Macoma hesperus Dall, 1908 accepted as Macoploma hesperus (Dall, 1908)
89. Species Macoma hesterna A. W. B. Powell & Bartrum, 1929 † accepted as Tellina hesterna (Bartrum & A. W. B. Powell, 1928) † (superseded combination)
90. Species Macoma hokkaidoensis Amano & Lutaenko, 1999 accepted as Rexithaerus hokkaidoensis (Amano & Lutaenko, 1999)
91. Species Macoma inclinata (G. B. Sowerby III, 1904) accepted as Macoploma inclinata (G. B. Sowerby III, 1904)
92. Species Macoma inconspicua (Broderip & G. B. Sowerby I, 1829) accepted as Limecola balthica (Linnaeus, 1758) accepted as Macoma balthica (Linnaeus, 1758) (unaccepted > junior subjective synonym)
93. Species Macoma indentata P. P. Carpenter, 1864 accepted as Rexithaerus indentata (P. P. Carpenter, 1864)
94. Species Macoma inexpectata Cosel, 1995 accepted as Macoploma inexpectata (Cosel, 1995) accepted as Psammacoma inexpectata (Cosel, 1995)
95. Species Macoma inflata Dawson, 1872 accepted as Macoma crassula (Deshayes, 1855)
96. Species Macoma inflatula Dall, 1897 accepted as Macoma carlottensis Whiteaves, 1880
97. Species Macoma innominata Bertin, 1878 accepted as Austromacoma nymphalis (Lamarck, 1818) (original combination)
98. Species Macoma inornata (Hanley, 1844) accepted as Macoploma inornata (Hanley, 1844)
99. Species Macoma jacalitosana Arnold, 1910 accepted as Macoma nasuta (Conrad, 1837)
100. Species Macoma japonica E. von Martens, 1872 accepted as Heteromacoma japonica (E. von Martens, 1872) (unaccepted > superseded combination)
101. Species Macoma jeanae Dance & Eames, 1966 accepted as Donax townsendi G. B. Sowerby III, 1894
102. Species Macoma kelseyi Dall, 1900 accepted as Macoma nasuta (Conrad, 1837)
103. Species Macoma kerica Hendrickson, 1928 accepted as Cryptomya californica (Conrad, 1837)
104. Species Macoma lamproleuca (Pilsbry & H. N. Lowe, 1932) accepted as Macoploma lamproleuca (Pilsbry & H. N. Lowe, 1932)
105. Species Macoma leptonoidea Dall, 1895 accepted as Macoma carlottensis Whiteaves, 1880 (unaccepted > junior subjective synonym)
106. Species Macoma levior (G. B. Sowerby III, 1904) accepted as Psammacoma levior (G. B. Sowerby III, 1904)
107. Species Macoma limula Dall, 1895 accepted as Macoploma limula (Dall, 1895) (original combination)
108. Species Macoma lingua-felis (Linnaeus, 1758) accepted as Scutarcopagia linguafelis (Linnaeus, 1758) (unaccepted generic combination, and uncorrected hyphen in species name)
109. Species Macoma litoralis (Krauss, 1848) accepted as Salmacoma litoralis (Krauss, 1848)
110. Species Macoma lucerna (Hanley, 1844) accepted as Austromacoma lucerna (Hanley, 1844)
111. Species Macoma lukini Kamenev, 1990 accepted as Macoma golikovi Scarlato & Kafanov, 1988
112. Species Macoma lunella A. Gould, 1861 accepted as Abra lunella (A. Gould, 1861) (original combination)
113. Species Macoma matadoa (Gmelin, 1791) accepted as Gastrana matadoa (Gmelin, 1791) (unaccepted > superseded combination)
114. Species Macoma medioamericana Olsson, 1942 accepted as Macoploma ecuadoriana (Pilsbry & Olsson, 1941)
115. Species Macoma melo (G. B. Sowerby II, 1866) accepted as Macomopsis melo (G. B. Sowerby II, 1866)
116. Species Macoma mitchelli Dall, 1895 accepted as Ameritella mitchelli (Dall, 1895) (original combination)
117. Species Macoma moluccensis (E. von Martens, 1865) accepted as Macomopsis moluccensis (E. von Martens, 1865) (unaccepted > superseded combination)
118. Species Macoma moretonensis (Deshayes, 1855) accepted as Sylvanus lilium (Hanley, 1844)
119. Species Macoma morroensis T. A. Burch, 1945 accepted as Macoploma acolasta (Dall, 1921)
120. Species Macoma murrayi (Grabau & S. G. King, 1928) accepted as Macoma murrayana (A. E. Salisbury, 1934)
121. Species Macoma neptuni W. H. Turton, 1932 accepted as Salmacoma litoralis (Krauss, 1848) (junior synonym)
122. Species Macoma nobilis (Hanley, 1845) accepted as Salmacoma nobilis (Hanley, 1845)
123. Species Macoma nymphalis (Lamarck, 1818) accepted as Austromacoma nymphalis (Lamarck, 1818) (superseded generic combination)
124. Species Macoma obliquilineata (Conrad, 1837) accepted as Jactellina clathrata (Deshayes, 1835)
125. Species Macoma occidentalis Dall, 1890 accepted as Cymatoica undulata (Hanley, 1844)
126. Species Macoma oneroaensis A. W. B. Powell & Bartrum, 1929 † accepted as Bartrumia oneroaensis (A. W. B. Powell & Bartrum, 1929) † (superseded combination)
127. Species Macoma orientalis Dall, 1890 accepted as Cymatoica orientalis (Dall, 1890) (original combination)
128. Species Macoma orientalis Scarlato, 1967 accepted as Macoma scarlatoi Kafanov & Lutaenko, 1997 (invalid: non Dall, 1890; Macoma scarlatoi Kafanov & Lutaenko, 1997 is a replacement name)
129. Species Macoma pacis Pilsbry & H. N. Lowe, 1932 accepted as Psammotreta pura (Gould, 1853)
130. Species Macoma panamensis Dall, 1900 accepted as Macoploma panamensis (Dall, 1900) (unaccepted > superseded combination)
131. Species Macoma parkeri Tryon, 1869 accepted as Tellina subangulata G. B. Sowerby II, 1869 (unnecessary replacement name for Tellina subtrigona G. B. Sowerby II, 1867)
132. Species Macoma parthenopa Pilsbry & H. N. Lowe, 1932 accepted as Macoploma lamproleuca (Pilsbry & H. N. Lowe, 1932)
133. Species Macoma patula W. H. Turton, 1932 accepted as Salmacoma litoralis (Krauss, 1848) (junior synonym)
134. Species Macoma pellucida (R. A. Philippi, 1843) accepted as Macomopsis moluccensis (E. von Martens, 1865)
135. Species Macoma phenax Dall, 1900 accepted as Ameritella mitchelli (Dall, 1895)
136. Species Macoma praerupta (A. E. Salisbury, 1934) accepted as Psammacoma gubernaculum (Hanley, 1844)
137. Species Macoma praetexta (E. von Martens, 1865) accepted as Praetextellina praetexta (E. von Martens, 1865) (unaccepted > superseded combination)
138. Species Macoma pseudocandida Bertin, 1878 accepted as Austromacoma birmanica (R. A. Philippi, 1849)
139. Species Macoma pseudofallax Cosel, 1995 accepted as Psammacoma pseudofallax (Cosel, 1995)
140. Species Macoma pseudomera Dall & C. T. Simpson, 1901 accepted as Pseudomacalia antillarum (A. d'Orbigny, 1853)
141. Species Macoma quadrana Dall, 1916 accepted as Macoma carlottensis Whiteaves, 1880
142. Species Macoma retrorsa (G. B. Sowerby II, 1867) (unaccepted)
143. Species Macoma robini H. J. Finlay, 1924 † (unaccepted, superseded combination)
144. Species Macoma rousi (G. B. Sowerby III, 1892) (unaccepted)
145. Species Macoma secta (Conrad, 1837) (unaccepted > superseded combination)
146. Species Macoma sectior Oyama, 1950 (unaccepted)
147. Species Macoma senegalensis Bertin, 1878 (unaccepted)
148. Species Macoma sicca Scarlato & Ivanova, 1981 (unaccepted > junior subjective synonym)
149. Species Macoma siliqua (C. B. Adams, 1852) (unaccepted)
150. Species Macoma sitkana Dall, 1900 (unaccepted > junior subjective synonym)
151. Species Macoma subovata (G. B. Sowerby II, 1867) (unaccepted)
152. Species Macoma subtriquetra Bartrum & A. W. B. Powell, 1928 † (unaccepted, superseded combination)
153. Species Macoma suteri E. A. Smith, 1898 (unaccepted, junior subjective synonym)
154. Species Macoma syndesmyoides Melvill & Standen, 1907 (unaccepted > superseded combination)
155. Species Macoma tageliformis Dall, 1900 (unaccepted > superseded combination)
156. Species Macoma takahokoensis G. Yamamoto & Habe, 1959 (unaccepted > junior subjective synonym)
157. Species Macoma tenera Leach, 1819 (unaccepted > junior subjective synonym)
158. Species Macoma tenta (Say, 1834) (unaccepted)
159. Species Macoma textilis (Deshayes, 1855) (unaccepted)
160. Species Macoma transcalpta G. B. Sowerby III, 1915 (unaccepted, original combination)
161. Species Macoma truncaria Dall, 1916 (unaccepted)
162. Species Macoma truncata (Jonas, 1843) (unaccepted)
163. Species Macoma undulata (Hanley, 1844) (unaccepted)
164. Species Macoma uruguayensis (E. A. Smith, 1885) (unaccepted)
165. Species Macoma vanvlecki Arnold, 1910 (unaccepted)
166. Species Macoma vappa (Iredale, 1929) (unaccepted)
167. Species Macoma ventricosa (Deshayes, 1855) (unaccepted)
168. Species Macoma yoldiformis P. P. Carpenter, 1864 (unaccepted)
169. Subgenus Macoma (Cymatoica) Dall, 1890 (alternative representation)
170. Subgenus Macoma (Macoma) Leach, 1819 (alternative representation)
     1. Species Macoma (Macoma) orientalis Golikov & Scarlato, 1967 accepted as Macoma scarlatoi Kafanov & Lutaenko, 1997 (unaccepted > junior homonym)
     2. Species Macoma (Macoma) brota Dall, 1916 represented as Macoma brota Dall, 1916
     3. Species Macoma (Macoma) coani Kafanov & Lutaenko, 1999 represented as Macoma coani Kafanov & Lutaenko, 1999
     4. Species Macoma (Macoma) cuneipyga (Scarlato, 1981) represented as Macoma cuneipyga (Scarlato, 1981)
     5. Species Macoma (Macoma) elimata Dunnill & Coan, 1968 represented as Macoma elimata Dunnill & Coan, 1968
     6. Species Macoma (Macoma) inquinata (Deshayes, 1855) represented as Macoma inquinata (Deshayes, 1855)
     7. Species Macoma (Macoma) lipara Dall, 1916 represented as Macoma lipara Dall, 1916
     8. Species Macoma (Macoma) nasuta (Conrad, 1837) represented as Macoma nasuta (Conrad, 1837)
     9. Species Macoma (Macoma) oinomikadoi Otuka, 1939 represented as Macoma oinomikadoi Otuka, 1939
     10. Species Macoma (Macoma) optiva (Yokoyama, 1923) † represented as Macoma optiva (Yokoyama, 1923) †
     11. Species Macoma (Macoma) scarlatoi Kafanov & Lutaenko, 1997 represented as Macoma scarlatoi Kafanov & Lutaenko, 1997
     12. Species Macoma (Macoma) simizuensis Krishtofovich, 1957 † represented as Macoma simizuensis L. Krishtofovich, 1954 †
171. Subgenus Macoma (Pinguimacoma) Iredale, 1936 represented as Macoma Leach, 1819
     1. Species Macoma (Pinguimacoma) hemicilla (Iredale, 1936) represented as Macoma hemicilla (Iredale, 1936)
172. Species Macoma alumensis Dall, 1900 † (uncertain > unassessed)
173. Species Macoma dilatata (Deshayes, 1855) (uncertain > nomen dubium)
174. Species Macoma gardnerae Mansfield, 1932 † (uncertain > unassessed)
175. Species Macoma izirii Otuka, 1943 † (uncertain > unassessed)
176. Species Macoma truncatoides Khomenko, 1931 † (uncertain > taxon inquirendum)
177. Species Macoma virginiana Conrad, 1866 † (uncertain > unassessed)

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