1. Aitkenhead, N. , Chisholm, J.I. & Stevenson, I.P. 1985. Geology of the Country around Buxton, Leek and Bakewell. Memoir of the British Geological Survey, England and Wales, Sheet 111.
2. Aitkenhead, N. , Barclay, W.J. , Brandon, A. , Chadwick, R.A. , Chisholm, J.I. , Cooper, A.H. & Johnson, E.W. 2002. British Regional Geology . The Pennines and Adjacent Areas. 4th edn. British Geological Survey, Nottingham.
3. Echinocrinus versus Archaeocidaris;Bather;Annals & Magazine of Natural History (series 7),1907
4. Open nomenclature;Bengtson;Palaeontology,1988
5. Biodiversity of Mississippian (Lower Carboniferous) crinoids from Bradford Dale, Derbyshire, UK