Taxa included

Petrunkevitch, A. (1949). A study of Palaeozoic Arachnida. Transactions of the Connecticut Academy of Arts and Sciences 37: 69–315. ZooBank: 0A24E194-CBB7-43A2-B26A-D117335C485B

Taxon
Phrynus palmatum Herbst, 1797 (Amblypygi: Phrynidae) n/a, fig. 17, Tarantula palmata (Herbst)
Chelifer cancroides (Linnaeus, 1758) (Pseudoscorpiones: Cheliferidae) n/a, fig. 6, Chelifer cancroides (Linnaeus)
Pseudocellus dorotheae (Gertsch and Mulaik, 1939) (Ricinulei: Ricinoididae) n/a, fig. 21, Cryptocellus dorotheae
Schizomus crassicaudatus (O. Pickard-Cambridge, 1872) (Schizomida: Hubbardiidae) n/a, figs 3–4, Schizomus crassicaudatus (O. Pickard-Cambridge)
Hubbardia pentapeltis Cook, 1899 (Schizomida: Hubbardiidae) n/a, fig. 16, Trithyreus pentapeltis (Cook)
Zeria venator (Pocock, 1897) (Solifugae: Solpugidae) n/a, fig. 24, Solpuga venator
Labochirus proboscideus (Butler, 1872) (Uropygi: Thelyphonidae) n/a, fig. 14, Labochirus proboscideus (Butler)
Mastigoproctus giganteus (Lucas, 1835) (Uropygi: Thelyphonidae) n/a, figs 1–2, 31–33, 43–46, 49–52, Mastigoproctus giganteus (Lucas)
Prokoenenia wheeleri (Rucker, 1901) (Palpigradi: Prokoeneniidae) n/a, fig. 13, Prokoenenia wheeleri (Rucker)
Pseudoscorpiones de Geer, 1778 156–157, Pseudoscorpiones de Geer
Palpigradi Thorell, 1888 261, Palpigradi
Schizomida Petrunkevitch, 1945 262, Schizomida
Uropygi Thorell, 1883 262–263, Thelyphonida
Geralinura Scudder, 1884 (Uropygi: Incertae sedis) 263, Geralinura
Geralinura similis Petrunkevitch, 1913 (Uropygi: Incertae sedis) 263, Geralinura similis
Geralinura carbonaria Scudder, 1884 (Uropygi: Incertae sedis) 263, Geralinura carbonaria
Geralinura gigantea Petrunkevitch, 1913 (Uropygi: Incertae sedis) 263–264, Geralinura gigantea
Prothelyphonus bohemicus (Kušta, 1884) (Uropygi: Incertae sedis) 264, Geralinura bohemica (Kušta)
Geralinura britannica Pocock, 1911 (Uropygi: Incertae sedis) 264–266, figs 157, 265 (misidentification, in part; see Proschizomus petrunkevitchi Dunlop and Horrocks), Geralinura britannica
Proschizomus petrunkevitchi Dunlop and Horrocks, 1996 (Uropygi: Incertae sedis) 264–266, figs 157, 265 (misidentification, in part), Geralinura britannica
Amblypygi Thorell, 1883 268–270, Phrynichida
Graeophonus Scudder, 1890 (Amblypygi: Incertae sedis) 270, Graeophonus Scudder
Graeophonus scudderi Pocock, 1911 (Amblypygi: Incertae sedis) 270, Graeophonus carbonarius (Scudder)
Graeophonus carbonarius (Scudder, 1876) (Amblypygi: Incertae sedis) 270, Graeophonus carbonarius (Scudder)
Graeophonus anglicus Pocock, 1911 (Amblypygi: Incertae sedis) 271–273, 161–162, 263–264, 268, Graeophonus anglicus Pocock
Protophrynus Petrunkevitch, 1913 (Amblypygi: Incertae sedis) 273, Protophrynus
Sorellophrynus carbonarius (Petrunkevitch, 1913) (Amblypygi: Incertae sedis) 273, Protophrynus carbonarius Petrunkevitch
Thelyphrynus Petrunkevitch, 1913 (Amblypygi: Incertae sedis) 273, Thelyphrynus Petrunkevitch
Thelyphrynus elongatus Petrunkevitch, 1913 (Amblypygi: Incertae sedis) 273, Thelyphrynus elongatus Petrunkevitch
Ricinulei Thorell, 1876 281–285, Ricinulei
Poliocheridae Scudder, 1884 (Ricinulei) 285, (as Polyocheridae [sic]), Poliocheridae
Poliochera Scudder, 1884 (Ricinulei: Poliocheridae) 285, (as Polyochera [sic]), Poliochera
Curculioididae Cockerell, 1916 (Ricinulei) 286, Curculioididae
Curculioides Buckland, 1837 (Ricinulei: Curculioididae) 286, Curculioides
Poliochera glabra Petrunkevitch, 1913 (Ricinulei: Poliocheridae) 286, (as Polyochera [sic] glabra), Poliochera glabra
Poliochera punctulata Scudder, 1884 (Ricinulei: Poliocheridae) 286, fig. 23 (as Polyochera [sic] punctulata), Poliochera punctulata
Terpsicroton alticeps (Pocock, 1911) (Ricinulei: Poliocheridae) 286, (as Polyochera [sic] alticeps), Poliochera alticeps
Amarixys gracilis (Petrunkevitch, 1945) (Ricinulei: Curculioididae) 287, Curculioides gracilis
Amarixys sulcata (Melander, 1903) (Ricinulei: Curculioididae) 287, Curculioides sulcatus (Melander)
Curculioides ansticii Buckland, 1837 (Ricinulei: Curculioididae) 287, fig. 269, Curculioides ansticii
Curculioides granulatus Petrunkevitch, 1949 (Ricinulei: Curculioididae) 287–291, figs 163–166, 266–267, Curculioides granulatus
Curculioides pococki Selden, 1992 (Ricinulei: Curculioididae) 287, fig. 269 (misidentifications), Curculioides ansticii Buckland
Curculioides scaber (Scudder, 1890) (Ricinulei: Curculioididae) 287, fig. 22, Curculioides scaber (Scudder)
Curculioides eltringhami Petrunkevitch, 1949 (Ricinulei: Curculioididae) 291–292, figs 167–169, 270–271, Curculioides eltringhami
Protosolpuga Petrunkevitch, 1913 (Solifugae: Protosolpugidae) 292, Protosolpuga
Protosolpuga carbonaria Petrunkevitch, 1913 (Solifugae: Protosolpugidae) 292, Protosolpuga carbonaria