Petrunkevitch, A. (1949). A study of Palaeozoic Arachnida. Transactions of the Connecticut Academy of Arts and Sciences 37: 69–315.
| Taxon | |
|---|---|
| Hubbardia pentapeltis Cook, 1899 (Schizomida: Hubbardiidae) | n/a, fig. 16, Trithyreus pentapeltis (Cook) |
| Schizomus crassicaudatus (O. Pickard-Cambridge, 1872) (Schizomida: Hubbardiidae) | n/a, figs 3–4, Schizomus crassicaudatus (O. Pickard-Cambridge) |
| Schizomida Petrunkevitch, 1945 | 262, Schizomida |