References

Brauckmann, C. (1987b). Neue Arachniden (Ricinuleida, Trigonotarbida) aus dem Namurium B von Hagen-Vorhalle (Ober-Karbon; West-Deutschland). Dortmunder Beiträge zur Landeskunde, Naturwissenschaftliche Mitteilungen 21: 97–109. -- Show included taxa

Harvey, M.S. (2003c). Catalogue of the smaller arachnid orders of the world: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae. CSIRO Publishing, Melbourne. -- Show included taxa

Langford, G. (1963). The Wilmington coal fauna and additions to the Wilmington coal flora from a Pennsylvanian deposit in Will County, Illinois. Esconi Associates, Illinois. [2nd edition] -- Show included taxa

Petrunkevitch, A. (1913). A monograph of the terrestrial Palaeozoic Arachnida of North America. Transactions of the Connecticut Academy of Arts and Sciences 18: 1–137. -- Show included taxa

Petrunkevitch, A. (1949). A study of Palaeozoic Arachnida. Transactions of the Connecticut Academy of Arts and Sciences 37: 69–315. -- Show included taxa

Petrunkevitch, A. (1953). Paleozoic and Mesozoic Arachnida of Europe. Memoirs of the Geological Society of America 53: i–xi, 1–128. -- Show included taxa

Petrunkevitch, A. (1955a). Arachnida. In: Moore, R.C. (ed.) Treatise on invertebrate paleontology. P, Arthropoda University of Kansas Press, Lawrence 2: 42–162. -- Show included taxa

Selden, P.A. (1992). Revision of the fossil ricinuleids. Transactions of the Royal Society of Edinburgh, Earth Sciences 83: 595–634. -- Show included taxa

Selden, P.A. (1993b). Arthropoda (Aglaspidida, Pycnogonida and Chelicerata). In: Benton, M.J. (ed.) The fossil record 2 Chapman and Hall, London: 297–320. -- Show included taxa