	Authors	Year	Title
	McCoy	1852	Description of the British Palaeozoic fossils in the Geological Museum of the University of Cambridge. In. A.Sedgwick: A synopsis of the classification of the British Palaeozoic rocks, 2: I-VIII, 1-406, pl.1A-1L, 2A, 3A-3D; London, Cambridge.
	Phillips	1841	Figures and descriptions of the Palaeozoic fossils of Cornwall, Devon, and West Somerset. I-XII, 1-231, pl.1-60; London.
	Price	1982	Some Famennian (Upper Devonian) ammonoids from north western Europe. [unpublished dissertation, Hull]. Unpubl.Ph.D. Thesis,I-XXV,1-460,fig.1.1-1.7,fig.3.1-3.3,fig.4.1-4.16, fig.5.1-5.35, fig.6.1, fig.7.1-7.21, fig.8.1-8.2, pl.5.1-5.42, pl.7.1-7.6; Hull.