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Dear Bjoern, Some of us use the ICBN and some of us use the ICZN -- here is what we at the U.S. Geological Survey have been instructed. Note that many journals recommend the use of our rules of style. Suggestions to Authors of the Reports of the United States Geological Survey, Seventh Edition, revised and edited by Wallace R. Hansen, U.S. Government Printing Office, 1991 p. 102 Spirifer grimesi Hall Taxon definitely identified. Spirifer cf. S. grimesi Hall Taxon compared with named species. Spirifer aff. S. grimesi Hall Taxon has affinities with named species Spirifer? grimesi Hall Species questionably assigned to genus. Spirifer grimesi Hall? Species doubtful, but assigned to correct genus. ?Spirifer grimesi Hall Entire assignment doubtful. The entire publication is available at http://www.nwrc.usgs.gov/lib/lib_sta.htm There is no copyright. **************** Lucy E. Edwards U.S. Geological Survey 926A National Center Reston, VA 20192 phone: 703 648-5272 leedward@usgs.gov ****************
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