2012 GSA Annual Meeting in Charlotte
Session No. 130 Monday, 5 November 2012
1:30 PM-5:30 PM, Charlotte Convention Center: 217D

T138. Fossil Preservation, Biological Evolution, and Environmental Change at the Dawn of Animal Radiation: An Examination of Geobiological Events across the Ediacaran–Cambrian Transition II (GSA Geobiology & Geomicrobiology Division; Paleontological Society)

James D. Schiffbauer and Shuhai Xiao, Presiding
 Paper #Start Time
130-11:30 PM X-RAY MICRO-CT INVESTIGATION OF THE EDIACARA FOSSIL PTERIDINIUM SIMPLEX FROM NAMIBIA: MEYER, Michael1, ELLIOTT, David2, POLYS, Nick3, WOOD, Andrew3, VICKERS-RICH, Patricia2, and XIAO, Shuhai4, (1) Department of Geology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, mike.meyer.geo@gmail.com, (2) School of Geosciences, Monash University, Clayton, 3800, Australia, (3) Department of Computer Science, Virginia Tech Information Technology, 3030A Torgersen Hall, Blacksburg, VA 24060, (4) Department of Geosciences, Virginia Tech, Blacksburg, VA 24061
130-21:45 PM SYNCHROTRON X-RAY MICRO-CT ANALYSES OF THE EARLY CAMBRIAN MICROFOSSILS: KOMIYA, Tsuyoshi1, HAN, Jian2, NAKAO, Taito3, UESUGI, Kentaro4, and HOSHINO, Masato4, (1) Department of Earth Science & Astronomy, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan, komiya@ea.c.u-tokyo.ac.jp, (2) Early Life Institute and Key Laboratory of Continental Dynamics, Northwest University, Xi'an, 710069, China, (3) Department of Earth Sciences and Astronomy, Graduate school of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan, (4) Research and Utilization Division, Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo, Sayo, 679-5198, Japan
130-32:00 PM OCEAN OXYGENATION AND ORIGIN OF FOSSIL-BEARING CHERT BANDS IN LOWER CAMBRIAN STRATA OF SOUTH CHINA: O'DONNELL, Kenneth H., Geosciences, Virginia Tech, 4404 Derring Hall (0420), Blacksburg, VA 24061, kenodonn@vt.edu and XIAO, Shuhai, Department of Geosciences, Virginia Tech, Blacksburg, VA 24061
130-42:15 PM THE FIRST EXPLOSIVE DIVERSIFICATION OF SSFS DURING THE DEPOSITION OF THE LOWERMOST CAMBRIAN PHOSPHORITE IN CHENGJIANG, SOUTH CHINA: SATO, Tomohiko1, ISOZAKI, Yukio2, HITACHI, Takahiko2, and SHU, Degan3, (1) Tokyo Inst. Tech, 2-12-1 Ookayama, Meguro, Tokyo, 152-8551, Japan, sato.t.bq@m.titech.ac.jp, (2) Univ Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan, (3) Early Life Inst, Northwest Univ, 229 Taibai Road, Xi'an, 710069, China
130-52:30 PM SMALL SHELLY FOSSIL BIOSTRATIGRAPHY AND PRESERVATION IN THE DZABKHAN BASIN IN SOUTHWEST MONGOLIA: SMITH, Emily F., BOLD, Uyanga, MACDONALD, Francis A., BRADLEY, Dan B., and PETACH, Tanya N., Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, efsmith@fas.harvard.edu
130-62:45 PM POSSIBLE MARKUELIA EMBRYOS FROM THE EARLY CAMBRIAN (TERRENEUVIAN) YANJIAHE FORMATION IN HEBEI PROVINCE OF SOUTH CHINA: BROCE, Jesse S. Jr, Virginia Tech Geosciences, Blacksburg, VA 24060, jb569342@vt.edu, XIAO, Shuhai, Department of Geosciences, Virginia Tech, Blacksburg, VA 24061, and SCHIFFBAUER, James D., Geological Sciences, University of Missouri, 101 Geology Building, Columbia, MO 65211
130-73:00 PM DIVERSE STEM-GROUP BRACHIOPOD FOSSILS FROM THE LOWER CAMBRIAN OF SOUTH CHINA: LI, Guoxiang, State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing, 210008, China, gxli@nigpas.ac.cn and ZHANG, Zhifei, Early Life Institute, Department of Geology, Northwest University, Xi'an, 710069, China
 3:15 PM Break
130-83:30 PM HEMICHORDATES AND ALGAE FROM THE CAMBRIAN (SERIES 3) WHEELER AND MARJUM FORMATIONS (UTAH) AND BURGESS SHALE (BRITISH COLUMBIA): LODUCA, Steve T., Department of Geography and Geology, Eastern Michigan University, 205 Strong Hall, Ypsilanti, MI 48197, sloduca@emich.edu and KRAMER, Anthony, Department of Geology, University of Cincinnati, Cincinnati, OH 45221
130-93:45 PM IMPLICATIONS OF THE OCCURRENCE OF PAIRED ANTERIOR CHAETAE IN THE LATE EARLY CAMBRIAN MOLLUSC PELAGIELLA FROM THE KINZERS FORMATION OF PENNSYLVANIA FOR RELATIONSHIPS AMONG TAXA AND EARLY EVOLUTION OF THE MOLLUSCA: THOMAS, Roger D.K., Department of Earth and Environment, Franklin & Marshall College, P.O. Box 3003, Lancaster, PA 17604-3003, roger.thomas@fandm.edu and VINTHER, Jakob, School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol, BS8 1RJ, United Kingdom
130-104:00 PM A SHORTER FUSE FOR THE CAMBRIAN EXPLOSION?: KAUFMAN, Alan J.1, PEEK, Sara1, MARTIN, Aaron J.1, CUI, Huan2, GRAZHDANKIN, Dmitri3, ROGOV, Vladimir3, XIAO, Shuhai4, BUCHWALDT, Robert5, and BOWRING, Samuel6, (1) Geology Department, University of Maryland, College Park, MD 20742, kaufman@geol.umd.edu, (2) Department of Geology, University of Maryland, College Park, MD 20742, (3) Russian Academy of Science, Novosibirsk Branch, Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk, 630090, Russia, (4) Department of Geosciences, Virginia Tech, Blacksburg, VA 24061, (5) Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, (6) Dept. Earth, Atm. & Planet. Sci, Massachusetts Institute of Technology, Cambridge, MA 02139
130-114:15 PM THE CAMBRIAN EXPLOSION: ANIMALS OR FOSSILS?: PETERSON, Kevin J., Biological Sciences, Dartmouth College, Hanover, NH 03755, Kevin.J.Peterson@dartmouth.edu
130-124:35 PM THE CAMBRIAN EXPLOSION: THE CONSTRUCTION OF ANIMAL BIODIVERSITY: ERWIN, Douglas H., Dept. of Paleobiology, Smithsonian Institution, Washington, DC 20013-7012, erwind@si.edu and VALENTINE, James W., Integrative Biology, Univ of California, Berkeley, Museum of Paleontology, Univ. of California, Berkeley, CA 94720
 4:55 PM Concluding Remarks

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