References

Hansen, H.J. & Sørensen, W. (1904). On two orders of Arachnida. Cambridge University Press, Cambridge. -- Show included taxa

Pocock, R.I. (1911). A monograph of the terrestrial Carboniferous Arachnida of Great Britain. Monographs of the Palaeontographical Society 64: 1–84. -- Show included taxa

Thorell, T. (1892). On an apparently new arachnid belonging to the family Cryptostemmoidae, Westw.. Kungliga Svenska Vetenskaps-akademiens Handlingar 17: 1–18. -- Show included taxa

Westwood, J.O. (1874). Thesaurus entomologicus oxoniensis. Clarendon Press, Oxford. -- Show included taxa