New monograph published online, 28 May 2021:
Donovan, S. K. & Fearnhead, F. E. 2021. The British Devonian Crinoidea. Part 2. Addendum to Part 1, Cladida, Disparida and columnals. Monograph of the Palaeontographical Society, London: 57–148, pls 16–29. (Publ. 658, part of Vol. 174 for 2020).
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