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The Impact of the Pull of the Recent on the History of Marine Diversity
David Jablonski,1*Kaustuv Roy,2James W. Valentine,3Rebecca M. Price,1Philip S. Anderson1
Up to 50% of the increase in marine animal biodiversity throughthe Cenozoic at the genus level has been attributed to a samplingbias termed "the Pull of the Recent," the extension of stratigraphicranges of fossil taxa by the relatively complete sampling ofthe Recent biota. However, 906 of 958 living genera and subgeneraof bivalve mollusks having a fossil record occur in the Plioceneor Pleistocene. The Pull of the Recent thus accounts for only5% of the Cenozoic increase in bivalve diversity, a major componentof the marine record, suggesting that the diversity increaseis likely to be a genuine biological pattern.
1 Department of Geophysical Sciences, University of Chicago, 5734South Ellis Avenue, Chicago, IL 60637, USA. 2 Section of Ecology, Behavior and Evolution, University of California, San Diego, La Jolla, CA 92903, USA. 3 Department of Integrative Biology, University of California, Berkeley, CA 94720, USA.
* To whom correspondence should be addressed. E-mail: d-jablonski{at}uchicago.edu
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