	Authors	Year	Title
	Matthews	1970	A new cephalopod fauna from the Lower Carboniferous of east Cornwall. Palaeontology, 13 (1): 112-131, fig.1-6, pl.25-28; London.
	Matthews	1983	An occurrence of Lower Carboniferous (Gattendorfia-Stufe) ammonoids in southwest Ireland. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte, 1983, H.5: 293-299, fig.1-2; Stuttgart.