After Bulman, 1955

<==o †Dendroidea Nicholson, 1872
   |?-o †Cactograptus Ruedemann, 1908; ?Camb. Aust., Sil. NA.
   |  `-- †c. crassus Ruedemann, 1908
   |?-o †Ceramograptus Hudson, 1915; Ord. NA.
   |  `-- †C. ruedemanni Hudson, 1915
   |?-o †Coelograptus Ruedemann, 1947; Sil. NA.
   |  `-- †C. problematica (Spencer, 1878) [Inocaulis problematica Spencer, 1878]
   |?-o †Ruedemannograptus Termier, 1948 [pro Streptograptus Ruedemann, 1947, non Streptograptus Yin, 1937] Ord. NA.
   |  `-- †R. rectangularis (Ruedemann, 1947) S.D. Bulman, 1955 [Streptograptus rectangularis Ruedemann, 1947]
   |--o †Dendrograptidae Roemer, in Frech, 1897
   |  |--o †Dendrograptus Hall, 1858; ?M. Camb.-L.Carb. [Callodendrograptus Decker, 1945; ?Ophiograptus Poulsen, 1937]
   |  |  |-- †D. hallianus (Prout, 1851) [Graptolithus hallianus Prout, 1851]
   |  |  `-- †D. fruticosus Hall
   |  |--o †Aspidograptus Bulman, 1934; L.Ord.
   |  |  `-- †A. implicatus (Hopkinson, 1875) [Clematograptus implicatus Hopkinson, 1875]
   |  |--o †Callograptus Hall, 1865 [Odontocaulis Lapworth, 1881]; U.Camb.-L.Carb.
   |  |  |-- †C elegans Hall, 1865; Miller, 1889?
   |  |  `-- †C. salteri Hall
   |  |--o †Desmographus Hopkinson, 1875 [Rhizograpsus Spencer, 1878; Rhizograptus Spencer, 1884] Ord.-L.Carb.
   |  |  `-- †D. cancellatus (Hopkinson, 1875) [Dictyograptus cancellatus Hopkinson, 1875]
   |  |--o †Dictyonema Hall, 1851 [Phyllograpta Angelin, 1854; Rhabdinopora Eichwald, 1855; Graptopora Salter, 1858; Dictyograptus Hopkinson, 1875; Damesograptus Jahn, 1892; Dictyodendron; Dictyograptus Westergård, 1909; Airograptus Ruedemann, 1916; Nephelograptus Ruedemann, 1947]
   |  |  |-- †D. retiformis (Hall, 1843) Miller, 1889 [Gorgonia retiformis Hall, 1843]
   |  |  |-- †D. crassibasale Bassler
   |  |  `-- †D. flabelliforme (Eichwald)
   |  |--o †Licnograptus Ruedemann, 1947; L.Ord.
   |  |  `-- †L. elegans Ruedemann, 1947
   |  |--o †Marsipograptus Ruedemann, 1936 [Marsipograptus Ulrich & Ruedemann, 1931, nomen nudum] Ord.-?Sil.
   |  |  `-- †M. bullatus Ruedemann, 1936
   |  |--o †Ptiograptus Ruedemann, 1908
   |  |  `-- †P. percorrugatus Ruedemann, 1908
   |  |--o †Reticulograptus Wiman, 1901
   |  |  `-- †R. tuberosum (Wiman, 1895) [Dictyonema tuberosum Wiman, 1895]
   |  |--o †Rhipidodendrum Kozlowski, 1949
   |  |  `-- †R. samsonowiczi Kozlowski, 1949
   |  `--o †Syrrhipidograptus Poulsen, 1924
   |     `-- †S. nathorsti Poulsen, 1924
   |--o †Anisograptidae Bulman, 1950
   |  |--o †Anisograptus Ruedemann, 1937
   |  |  `-- †A. matanensis Ruedemann, 1937
   |  |--o †Adelograptus Bulman, 1941 [Bryograptus]
   |  |  `-- †A. hunnebergensis (Moberg, 1892) [Bryograptus? hunnebergensis Moberg, 1892]
   |  |--o †Bryograptus Lapworth, 1880
   |  |  |-- †B. kjerulfiLapworth, 1880; Gurley, 1896
   |  |  `-- †B. patens Matthew
   |  |--o †Clonograptus Hall & Micholson, 1873 emend. Lapworth, 1873 [pro Clonograpsus Hall & Micholson, 1873; incl.? Herrmannograptus Monsen, 1937]
   |  |  |-- †C. rigidus (Hall, 1858) Miller, 1889  [Graptolithus rigidus Hall, 1858]
   |  |  `-- †C. tenellus Linnarsson
   |  |--o †Radiographus M.S. Lapworth, in Bulman, 1950; L.Ord. NA.
   |  |  `-- †R. rosieranus M.S. Lapworth, in Bulman, 1950
   |  |--o †Staurograptus Emmons, 1855 emend. Hall, 1865 [pro Staurograpsus Emmons, 1855] L.Ord. NA. NWEu. Aust.
   |  |  `-- †S. dichotomus Emmons, 1855
   |  `--o †Triographus Monsen, 1925; L.Ord. NWEu. ENA.
   |     |-- †T. osloensis Monsen, 1925
   |     `-- †T. canadensis
   |--o †Acanthograptidae Bulman, 1938
   |  |--o †Acanthograptus Spencer, 1878 emend. Spencer, 1884 [pro Acanthograpsus Spencer, 1878] ?U.Camb.-Sil. NA. Eu. As. Aust.
   |  |  |-- †A. granti Spencer, 1878
   |  |  `-- †A. musciformis (Wiman)
   |  |--o †Koremagraptus Bulman, 1927; U.Ord.-M.Dev. Eu.
   |  |  `-- †K. onniensis Bulman, 1927
   |  `--o †Palaeodictyota Whitfield, 1902
   |     `-- †P. anastomotica (Ringueberg, 1888) [Inocaulus anastomotica Ringueberg, 1888]
   |--o †Inocaulidae Ruedemann, 1947
   |  |?-o ?†Diplospirograptus Ruedemann, 1925; Sil. NA.
   |  |  `-- †D. goldringae Ruedemann, 1925
   |  |?-o ?†Medusaegraptus Ruedemann, 1925; Sil. NA.
   |  |  `-- †M. mirabilis Ruedemann, 1925
   |  |--o †Inocaulis Hall, 1851; Ord.-Sil. NA. Eu.
   |  |  `-- †I. plumulosa Hall, 1851
   |  `--o †Thallograptus Ruedemann, 1925 [non Öpik, 1928]
   |     `-- †T. succulentus (Ruedemann, 1904) [Dentrograptus? succulentus Ruedemann, 1904]
   |--o †Ptilograptidae Hopkinson, 1875
   |  `--o †Psilograptus Hall, 1865 [Denticulograptus Schmidt, 1939] L.Ord.-U.Sil. Eu. NA. Aust.
   |     |-- †P. plumosus S.D. Miller, 1889
   |     `-- †P. delicatulus Ruedemann
   `--o †Chaunograptidae Bulman, in Moore, 1955
      |?-o ?†Ascograptus Ruedemann, 1925; Sil. NA.
      |  `-- †A. similis Ruedemann, 1925
      |?-o ?†Haplograptus Ruedemann, 1933; Camb.-Ord. NA.
      |  `-- †H. wisconsinensis Ruedemann, 1933
      `--o †Chaunograptus Hall, 1883 [Thallograptus Öpik, 1928 non Ruedemann, 1925; Hormograptus Öpik, 1930] ?Camb. NA., Ord. Eu. NA., Dev. NA.
         |-- †C. novellus (Hall, 1883) [Dendrograptus (Chaunograptus) novellus Hall, 1883]
         `-- †C. contortus Ruedemann

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