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| | Inter. Subcommission on Cambrian Stratigraphy |
 | | James B. Jago, Department of Applied Geology, School of Engineering, University of South Australia, Mawson Lakes, South Australia 5095, Australia. |
 | | Sun Weiguo, Nanjing Institute of Geology and Palaeontology, Academia Sinica, 39 East Chi-Ming-Ssu, Nanjing 210008, China. |
 | | Walter, Department of Earth and Planetary Sciences, Division of Environmental and Life Sciences, Macquarie University, North Ryde, New South Wales 2109, Australia. |
| wwwalt.uni-wuerzburg.de /palaeontologie/Stuff/casu4.htm (1730 words) |
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