2007 GSA Denver Annual Meeting (28–31 October 2007)
Session No. 5 Sunday, 28 October 2007
8:00 AM-12:00 PM, Colorado Convention Center: 605/607

P6. Oxygen, Evolution, and Extinction (Paleontological Society)

Peter Ward and Robert Berner, Presiding
 Paper #Start Time
 8:00 AM Introductory Remarks
5-18:05 AM ELEVATING ATMOSPHERIC OXYGEN: RAMP, STEPS, OR ROLLER COASTER?: KUMP, Lee R., Department of Geosciences, Pennsylvania State University, University Park, PA 16802, lkump@psu.edu
5-28:25 AM PAVING THE WAY FOR OXYGENIC PHOTOSYNTHESIS: GLACIAL PEROXIDES, THE PALEOPROTEROZIC SNOWBALL, AND BIOCHEMICAL EVOLUTION: KIRSCHVINK, Joseph L., Division of Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd, MC 170-25, Pasadena, CA 91125, kirschvink@caltech.edu
5-38:45 AM INCREASED CARBON ISOTOPIC FRACTIONATION DURING THE LATE CAMBRIAN SPICE EVENT AND A PULSE OF ATMOSPHERIC OXYGEN: SALTZMAN, Matthew R.1, YOUNG, Seth1, GILL, Ben2, LYONS, Tim2, KUMP, Lee3, and RUNNEGAR, Bruce4, (1) School of Earth Sciences, Ohio State University, 275 Mendenhall Lab, Columbus, OH 43210, saltzman.11@osu.edu, (2) Department of Earth Sciences, University of California, Riverside, CA 92521, (3) Geosciences, Penn State Univ, 0535 Deike Bldg, University Park, PA 16802, (4) Dept. of Earth and Space Sciences and IGPP Center for Astrobiology, NASA Astrobiology Institute, Univ. of California, Los Angeles, CA 90095-1567
5-49:05 AM OXYGEN, CARBON DIOXIDE, AND MASS EXTINCTIONS: WARD, Peter D., Department of Biology, University of Washington, Department of Biology, University of Washington, Seattle, WA 98195, argo@u.washington.edu and BERNER, Robert, Department of Geology and Geophysics, Yale University, Yale University, New Haven, CT 06520-8109
5-59:25 AM ROMER'S GAP AND THE TERRESTRIALIZATION OF PALEOZOIC ARTHROPODS AND LIMBED VERTEBRATES: LABANDEIRA, Conrad C., Dept. of Paleobiology, Smithsonian Institution, Washington, DC 20013, labandec@si.edu, WARD, Peter, Earth and Space Science Departments, University of Washington, Seattle, WA 98195, LAURIN, Michel, CNRS, UMR 7179, team "Squelette des vertébrés", Université Paris 6, 2 Place Jussieu, case 7077, Paris, 75005, France, and BERNER, Robert, Department of Geology and Geophysics, Yale University, Yale University, New Haven, CT 06520-8109
 9:45 AM Break
5-610:00 AM THE EFFECT OF LAND PLANT EVOLUTION ON PALEOZOIC ATMOSPHERIC O2: BERNER, Robert A., Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06520-8109, robert.berner@yale.edu
5-710:20 AM ATMOSPHERIC OXYGEN AND VERTEBRATE BODY SIZE: VANDENBROOKS, John M., School of Life Sciences, Arizona State University, PO Box 874601, Tempe, AZ 85287, jvandenb@asu.edu
5-810:40 AM VARIABLE RESPONSES OF INSECT SIZE TO ATMOSPHERIC OXYGEN LEVEL ACROSS SPECIES AND POPULATIONS: HARRISON, Jon Fewell1, KLOK, Cornelius Jacobus1, VANDEN BROOKS, John1, and KAISER, Alex2, (1) School of Life Sciences, Arizona State University, Mail Code 4501, Tempe, AZ 85287-4501, j.harrison@asu.edu, (2) Dept. of Basic Science, Midwestern University, 19555 N. 59th Ave, Glendale, AZ 85308
5-911:00 AM OXYGEN AS A CONTROL ON THE PERMIAN-TRIASSIC EVOLUTION OF THE MARINE BIOSPHERE: TWITCHETT, Richard J., School of Earth, Ocean and Environmental Science, University of Plymouth, Drake Circus, Plymouth PL4 8AA United Kingdom, richard.twitchett@plymouth.ac.uk
5-1011:20 AM ISOTOPIC AND MOLECULAR EVIDENCE FOR A MICROBIAL RESPONSE TO THE TRIASSIC-JURASSIC MASS EXTINCTION: WILLIFORD, Kenneth H.1, FORIEL, Julien2, WARD, Peter D.2, and SCHWAB, Valerie F.3, (1) Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, Kenneth.H.Williford@jpl.nasa.gov, (2) Department of Earth and Space Sciences, University of Washington, Box 351310, Seattle, WA 98195, (3) School of Oceanography, University of Washington, 518 Ocean Sciences Building, Seattle, WA 98195
5-1111:40 AM MESOZOIC OXYGEN DROP: EVOLUTION AND EXTINCTION IN THE MARINE REALM: BOTTJER, David J., Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, dbottjer@usc.edu

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