Literature
- Barnes, R.D. 1968. Invertebrate Zoology. W.B. Saunders Company: 605-669.
- Forbes, E. 1852. Monograph of the Echinodermata of the British Tertiaries. Palaeontographical Society (London): 36 pp. + IV plates.
- Hyman, L.H. 1955. The Invertebrates: Echinodermata, The coelomata Bilateria. McGraw-Hill Book Company Inc.: 763 pp.
- Mortensen, T.H. 1927. Handbook of the Echinoderms of the British Isles. Humphrey Milford, Oxford University Press: 471 pp.
- Moyse, J. & P.A. Tyler 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.