	Authors	Year	Title
	Bisat	1928	The Carboniferous goniatite zones of England and their continental equivalents. Congrès de Stratigraphie Carbonifère, Heerlen 1927, C.R.B.: 117-133, pl.6, 6a; Liège.
	Hodson & Moore	1959	Goniatites striatus and related forms from the Viséan of Ireland. Palaeontology, 1 (4): 384-396, fig.1-3, pl.64-69; London.