Fig. 1. A in Thomasaria vs. Pyramidalia conundrum in Devonian brachiopod systematics solved: An argument to formalize epitypification under the ICZN

Fig. 1. A. Geographical location of the study area in north-western Europe. B. Geological map of eastern Cornwall and southern Devon (Devonian after House and Selwood 1966, otherwise simplified and modified after British Geological Survey 1957). Black asterisks show fossil localities mentioned in the text. The white asterisk shows the presumed position of "Port Stephens" (see text for further explanation).