Episodes 1985; 8(4): 231-235
Published online December 1, 1985
Copyright © International Union of Geological Sciences.
Michael Bassett 1,2,3
2National Museum of Wales, Cardiff, U.K.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The terms Silurian and Cambrian were first published in a geological sense in 1835. This article reviews the historical background to the concept and early application of these stratigraphical divisions, and their international status after 150 years of development.