Oxygen, Ecology, and the Cambrian Radiation of Animals The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Sperling, Erik A., Christina A. Frieder, Akkur V. Raman, Peter R. Girguis, Lisa A. Levin, and Andrew H. Knoll. 2013. Oxygen, Ecology, and the Cambrian Radiation of Animals. Proceedings of the National Academy of Sciences 110, no. 33: 13446–13451. Published Version doi:10.1073/pnas.1312778110 Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:12336338 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA Oxygen, ecology, and the Cambrian radiation of animals Erik A. Sperlinga,1, Christina A. Friederb, Akkur V. Ramanc, Peter R. Girguisd, Lisa A. Levinb, a,d, 2 Andrew H. Knoll Affiliations: a Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, 02138 b Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, 92093- 0218 c Marine Biological Laboratory, Department of Zoology, Andhra University, Waltair, Visakhapatnam – 530003 d Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, 02138 1 Correspondence to:
[email protected] 2 Correspondence to:
[email protected] PHYSICAL SCIENCES: Earth, Atmospheric and Planetary Sciences BIOLOGICAL SCIENCES: Evolution Abstract: 154 words Main Text: 2,746 words Number of Figures: 2 Number of Tables: 1 Running Title: Oxygen, ecology, and the Cambrian radiation Keywords: oxygen, ecology, predation, Cambrian radiation The Proterozoic-Cambrian transition records the appearance of essentially all animal body plans (phyla), yet to date no single hypothesis adequately explains both the timing of the event and the evident increase in diversity and disparity.