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Published online March 15, 2021

Copyright © International Union of Geological Sciences.

Proposal for a scale of Cambrian subsystems (if such is needed at all)

by Peter D. Kruse*

South Australian Museum, PO Box 825, Normanville SA 5204, Australia

Correspondence to:E-mail: archaeo.kruse@gmail.com

Received: December 3, 2020; Revised: February 16, 2021; Accepted: February 16, 2021

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.


A recently proposed subsystem scale seeks to overlay a threefold subsystem scheme onto the four-series Cambrian. It does this by uniting the two lowest global series within a single subsystem, whereas the remaining two subsystems coincide with the global Miaolingian and Furongian series. This is an impractical scheme, strongly influenced by historical precedent, and an alternative scheme of two subsystems, each comprising two global series, is here proposed.