• Didymograptus Hall, 1865 † accepted as Didymograptus M'Coy in Sedgwick & McCoy, 1851 †
• Didymograptus M'Coy in Sedgwick & McCoy, 1851 †
• Didymograptus abnormis Hsu, 1934 †
• Didymograptus acriculus Keble & Harris, 1934 †
• Didymograptus adamantinus T.S. Hall, 1914 †
• Didymograptus arcuatus Hall †
• Didymograptus artus Elles & Wood, 1901 †
• Didymograptus asperus Harris & Thomas, 1938 †
• Didymograptus aureus T.S. Hall, 1914 †
• Didymograptus balticus Tullberg, 1938 †
• Didymograptus bartrumi Benson & Keble, 1935 †
• Didymograptus bidens Keble, 1927 †
• Didymograptus bifidus Hall †
• Didymograptus caducens Salter †
• Didymograptus cognatus Harris & Thomas, 1935 †
• Didymograptus compressus Harris & Thomas, 1935 †
• Didymograptus constrictus (J. Hall, 1865) †
• Didymograptus cuspidatus Ruedemann, 1904 †
• Didymograptus dependulus Harris & Keble, R A, 1932 †
• Didymograptus dilatans T.S. Hall, 1914 †
• Didymograptus distinctus Harris & Thomas, 1935 †
• Didymograptus dubitatus Harris & Thomas, 1935 †
• Didymograptus ellesae Ruedemann, 1908 †
• Didymograptus elongatus Harris & Thomas, 1914 †
• Didymograptus ensjoensis Monsen, 1937 †
• Didymograptus eocaduceus Harris, 1933 †
• Didymograptus extensus (J. Hall, 1858) †
• Didymograptus gracilis Tornquist, 1890 †
• Didymograptus hemicyclus Harris, 1933 †
• Didymograptus latens Hall, 1914 †
• Didymograptus latus Harris & Thomas, 1938 †
• Didymograptus mendicus Harris & Keble, R A, 1934 †
• Didymograptus mundus (T.S. Hall, 1914) †
• Didymograptus murchisoni Beck †
• Didymograptus nicholsoni Lapworth, 1875 †
• Didymograptus nitidus (J. Hall, 1858) †
• Didymograptus nodosus Harris †
• Didymograptus perditus T.S. Hall, 1914 †
• Didymograptus pritchardi Hall, 1899 †
• Didymograptus procumbens T.S. Hall, 1914 †
• Didymograptus protobifidus Elles, 1933 †
• Didymograptus similis (J. Hall, 1865) †
• Didymograptus stabilis Elles & Wood, 1901 †
• Didymograptus stavus Legg, 1976 †
• Didymograptus suecicus Tullberg, 1880 †
• Didymograptus superstes Lapworth, 1876 †
• Didymograptus taylori T.S. Hall, 1899 †
• Didymograptus undulatus Tornquist †
• Didymograptus uniformis Elles, G L & Wood, E †
• Didymograptus validus Monsen, 1937 †
• Didymograptus v-deflexus (Harris, 1924) †
• Didymograptus vicinus Harris & Thomas, 1938 †