Frič, A. (1904). Palaeozoische Arachniden. A. Frič, Prague.
| Taxon | |
|---|---|
| Ricinoides westermannii (Guérin-Méneville, 1838) (Ricinulei: Ricinoididae) | n/a, fig. 36, Cryptostemma westermannii |
| Poliocheridae Scudder, 1884 (Ricinulei) | 31, Poliocheridae |
| Poliochera Scudder, 1884 (Ricinulei: Poliocheridae) | 31, Poliochera |
| Poliochera punctulata Scudder, 1884 (Ricinulei: Poliocheridae) | 31–33, Poliochera punctulata |