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The Cambrian Conundrum: Early Divergence and Later Ecological Success in the Early History of Animals

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dc.contributor.author Erwin, Douglas H. en
dc.contributor.author Laflamme, Marc en
dc.contributor.author Tweedt, Sarah M. en
dc.contributor.author Sperling, Erik A. en
dc.contributor.author Pisani, Davide en
dc.contributor.author Peterson, Kevin J. en
dc.date.accessioned 2012-02-03T20:47:07Z
dc.date.available 2012-02-03T20:47:07Z
dc.date.issued 2011
dc.identifier.citation Erwin, Douglas H., Laflamme, Marc, Tweedt, Sarah M., Sperling, Erik A., Pisani, Davide, and Peterson, Kevin J. 2011. "<a href="https://repository.si.edu/handle/10088/17621">The Cambrian Conundrum: Early Divergence and Later Ecological Success in the Early History of Animals</a>." <em>Science</em>. 334 (6059):1091&ndash;1097. <a href="https://doi.org/10.1126/science.1206375">https://doi.org/10.1126/science.1206375</a> en
dc.identifier.issn 0036-8075
dc.identifier.uri http://hdl.handle.net/10088/17621
dc.description.abstract Diverse bilaterian clades emerged apparently within a few million years during the early Cambrian, and various environmental, developmental, and ecological causes have been proposed to explain this abrupt appearance. A compilation of the patterns of fossil and molecular diversification, comparative developmental data, and information on ecological feeding strategies indicate that the major animal clades diverged many tens of millions of years before their first appearance in the fossil record, demonstrating a macroevolutionary lag between the establishment of their developmental toolkits during the Cryogenian [(850 to 635 million years ago (Ma)], and the later ecological success of metazoans during the Ediacaran (635 to 541 Ma) and Cambrian (541 to 488 Ma) periods. We argue that this diversification involved new forms of developmental regulation, as well as innovations in networks of ecological interaction within the context of permissive environmental circumstances. en
dc.relation.ispartof Science en
dc.title The Cambrian Conundrum: Early Divergence and Later Ecological Success in the Early History of Animals en
dc.type Journal Article en
dc.identifier.srbnumber 108169
dc.identifier.doi 10.1126/science.1206375
rft.jtitle Science
rft.volume 334
rft.issue 6059
rft.spage 1091
rft.epage 1097
dc.description.SIUnit NH-Paleobiology en
dc.description.SIUnit NMNH en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 1091
dc.citation.epage 1097


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