Paleonet: Stratigraphic datums

[Martin J. Head]

I'd like to thank all those who responded to my query regarding  
observed and calculated range tops.  Your comments have been most  
enlightening and helpful.

Martin


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Martin J. Head
Professor
Department of Earth Sciences
BROCK UNIVERSITY
500 Glenridge Avenue
St. Catharines, Ontario L2S 3A1
CANADA
Tel  905-688-5550 ext. 5216
Fax  905-682-9020
Email  mjhead at brocku.ca
www.brocku.ca/earthsciences/people/mhead.php

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