| Benton, M.J. & Erwin, D.H., 1993. Mollusca: Amphineura and 'Monoplacophora'. In M.J. Benton (ed.), The Fossil Record 2. Chapman & Hall, London: [125]-130. 
 | 
	
		| Tracey, S., Todd, J.A. & Erwin, D.H., 1993. Mollusca: Gastropoda. In M.J. Benton (ed.), The Fossil Record 2. Chapman & Hall, London: [131]-167. 
 |