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View - Kowalewski, M. - Virginia Tech

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PALEONTOLOGICAL SOCIETY PAPERS, V. 8, 2002abFIGURE 8—Cephalopods. (a) Genus diversity of cephalopods through the Phanerozoic. Note the highlevel of turnover. Total diversity within intervals may be three times the boundary-crossing standingdiversity. (b) Pattern of change in diversity of nautiloid, ammonoid, and belemnite cephalopods.332

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