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. Stratigraphical and geographical distribution of Mississippian (Lower Carboniferous) Crinoidea from England and Wales
3. Bassler, R. S. 1938. Pelmatozoa Palaeozoica. In: Quenstedt, W. (ed.) Fossilium Catalogus, I: Animalia, pt. 83. W. Junk. The Hague.
4. Carson, G. A. 1991. Silicification of fossils. In: Allison, P.A. & Briggs, D.E.G. (eds) Taphonomy: Releasing the Data Locked in ihe Fossil Record. Plenum Press, New York, 455–499.
5. A field guide to the fossil echinoderms of Coplow, Bellman and Salthill Quarries, Clitheroe, Lancashire;Donovan;North West Geologist,1992