from “Wikipedia”

<==o Phalangiotarbida (Haase, 1890) Petrunkevitch, 1955 [Phalangiotarbi Haase, 1890; Phalangiotarbida Petrunkevitch, 1955; Architarbi Petrunkevitch, 1945]
   |?- †Eotarbus litoralis Kušta, 1888
   |?- †Nemastomoides depressus Petrunkevitch, 1913
   |-- †Anthracotarbus hintoni Kjellesvig-Waering, 1969 [ Anthracotarbidae Kjellesvig-Waering, 1969]
   |-- †Heterotarbus ovatus Petrunkevitch, 1913 [Heterotarbidae Petrunkevitch, 1913]
   |-- †Opiliotarbus elongatus (Scudder, 1890) [Opiliotarbidae Petrunkevitch, 1949]
   `--o †Architarbidae Karsch, 1882
      |--o †Architarbus Scudder, 1868
      |  |-- †A. hoffmanni Guthörl, 1934 [Opiliotarbus kliveri Waterlot, 1934; Goniotarbus sarana Guthörl, 1965]
      |  |-- †A. minor Petrunkevitch, 1913
      |  `-- †A. rotundatus Scudder, 1868
      |-- †Bornatarbus mayasii (Haupt, in Nindel, 1955) Rößler & Schneider, 1997
      |-- †Devonotarbus hombachensis Poschmann, Anderson & Dunlop, 2005
      |-- †Discotarbus deplanatus Petrunkevitch, 1913
      |--o †Geratarbus Scudder, 1890
      |  |-- †G. lacoei Scudder, 1890
      |  `-- †G. bohemicus Petrunkevitch, 1953
      |--o †Goniotarbus Petrunkevitch, 1953
      |  |-- †G. angulatus (Pocock, 1911)
      |  `-- †G. tuberculatus (Pocock, 1911)
      |-- †Hadrachne horribilis Melander, 1903
      |-- †Leptotarbus torpedo (Pocock, 1911) Petrunkevitch, 1945
      |--o †Mesotarbus Petrunkevitch, 1949
      |  |-- †M. angustus (Pocock, 1911)
      |  |-- †M. eggintoni (Pocock, 1911)
      |  |-- †M. hindi (Pocock, 1911)
      |  |-- †M. intermedius Petrunkevitch, 1949
      |  `-- †M. peteri Dunlop & Horrocks, 1997
      |-- †Metatarbus triangularus Petrunkevitch, 1913
      |--o †Ootarbus Petrunkevitch, 1945
      |  |-- †O. pulcher Petrunkevitch, 1945
      |  `-- †O. ovatus Petrunkevitch, 1945
      |--o †Orthotarbus Petrunkevitch, 1945
      |  |-- †O. minutus (Petrunkevitch, 1913)
      |  |-- †O. robustus Petrunkevitch, 1945
      |  `-- †O. nyranensis Petrunkevitch, 1953
      |-- †Paratarbus carbonarius Petrunkevitch, 1945
      |-- †Phalangiotarbus subovalis (Woodward, 1872) Haase, 1890
      |-- †Pycnotarbus verrucosus Darber, 1990
      `-- †Triangulotarbus terrehautensis Patrick, 1989

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