- Burgess Shale (5)
dir.yahoo.com/.../Cambrian_Period/Burgess_Shale
- Cambrian Period
When most of the major groups of animals first appear in the fossil record, 540 to 500 million years before present.
www.ucmp.berkeley.edu/cambrian/camb.html
- Early Animal Evolution: Emerging Views from Comparative Biology and Geology
Article examining the data that has begun to emerge that can resolve the sequence of genetic and morphological innovations, environmental events, and ecological interactions that collectively shaped Cambrian evolution.
cas.bellarmine.edu/tietjen/Ecology/early_animal_evolution.htm
- Web Directory: Cambrian
Links to general articles and fossil records.
www.es-designs.com/geol105/timescale/cambrian.html
- Cambrian Period, The
Overview of the paleoclimate and biosphere for the first period of the Paleozoic Era.
www.kheper.auz.com/gaia/Paleozoic/Cambrian/Cambrian.htm
- Scientific American: Life Goes for a Spin
A topsy-turvy earth may have triggered an evolutionary big bang.
www.sciam.com/article.cfm?articleID=000D1CA5-AB38-1C76-9B81809EC588EF21
- International Subcommission on Cambrian Stratigraphy
Working to complete and publish regional correlation charts for, and develop a global stage-level chronostratigraphic classification of, the Cambrian System.
www.uni-wuerzburg.de/palaeontologie/ISCS
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