1. Late Famennian gastropoda from south-west England
2. XVIII.—Proposed Arrangement of the Echinodermata, particularly as regards the Crinoidea and a Subdivision of the Class Adelostella (Echinidæ)
3. Bassler, R. S. 1938. Pelmatozoa Palaeozoica. In: Quenstedt, W. (ed.) Fossilium Catalogus I, Animalia, Part 83. Junk, The Hague, 1–194.
4. Palaeocurrent studies in the Middle and Upper Devonian basinal facies of north Cornwall;Beese;Proceedings of the Ussher Society,1978
5. Devonian of England, Wales and Scotland;Bluck,1988