Literature
  • , 1990
  • Echinodermata. In: P.J. Hayward & J.S. Ryland (eds): The Marine Fauna of the British Isles and North-West Europe, Volume 2, Molluscs to Chordates. Clarendon Press, Oxford: 839-871.
  • 1889
  • Echinodermata. Rep. Deep-sea Trawling Cruise off the S.W. coast of Ireland, under the direction of Rev. W. Spotswood Green. Ann. Mag. Nat. Hist. (6) IV.
  • 1962
  • Echinoderms. Hutchinson University Library: 200 pp.