	Authors	Year	Title
	Foord & Crick	1897	Catalogue of the fossil Cephalopoda in the British Museum (Natural History). Part III, containing the Bactritidae and part of the Suborder Ammonoidea). pp.I-XXXIII, 1-303, 145 figs., London.
	Phillips	1841	Figures and descriptions of the Palaeozoic fossils of Cornwall, Devon, and West Somerset. I-XII, 1-231, pl.1-60; London.