	Authors	Year	Title
	House	1965	A study in the Tornoceratidae: the succession of Tornoceras and related genera in the North American Devonian. Phil. Transactions of the Royal Society of London, Ser.B Biological Science, No.763 Vol.250: 79-130, fig.1-19, pl.1-11; London.
	House	1985	Class Cephalopoda. In: Murray,J.W. (Ed.): Atlas of invertebrate macrofossils.- 114-152, fig.6.7.1-6.7.25, pl.6.7.1-6.7.127; New York.