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'Spicules' in halysitids: a reply |
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| Authors: | RACHEL WOOD PAUL COPPER JOACHIM REITNER |
| Affiliation: | University of Cambridge, Downing St., Cambridge CB2 3EQ, UK;Department of Geology, Laurentian University, Ramsey Lake Road, Sudbury P3E 2C6, Ontario, Canada;Institut für Palaontologie der Freien Universitat, Schwendenerstrase 8, 0-1000 Berlin 33, FRG |
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