	Authors	Year	Title
	Foord	1903	Monograph of the Carboniferous Cephalopoda of Ireland, Part V, Containing the families Glyphioceratidae (concluded) and Prolecanitidae, with title-page and index. Palaeontolographical Society, 57: 147-234, pl.40-49; London.
	Hind	1905	Notes on the homotaxial equivalents of the beds which immediately succeed the Carboniferous Limestone in the west of Ireland. Proceedings of the Royal Irish Academy, 25 (sect. B): 93-116, pl.5-6; Dublin.
	Hodson	1957	Marker horizons in the Namurian of Britain, Ireland, Belgium and Western Germany. Association pour l'Etude de Paléontologie et de la Stratigraphie Houillères, Publication 24: 1-26, fig.1-3, pl.1-7; Bruxelles.