	Authors	Year	Title
	House	1963	Devonian ammonoid successions and facies in Devon and Cornwall. Quarterly Journal of the Geological Society of London, 119: 1-27, fig.1-8, pl.1-4; London.
	Münster	1832	Ueber die Planuliten und Goniatiten im Uebergangs-Kalk des Fichtelgebirges. 1-38, pl.1-6; Bayreuth (Birner).