Cambrian page content written and completed by:
bmw & agc -- 11/22/94
Tectonics and Paleoclimate material added 1 May 2000 by:
Cambrian Life page revised Sept. 2001 by bmw.
Cambrian pages updated to reflect Geological Society of America (GSA) 1999 Geologic Timescale, compiled by A.R. Palmer and J. Geissman
-- S. Rieboldt, Nov. 2002