2015 GSA Annual Meeting in Baltimore, Maryland, USA (1-4 November 2015)

Session No. 338
Wednesday, 4 November 2015: 1:30 PM-5:30 PM
Room 325/326 (Baltimore Convention Center)

T152. Geobiology of Critical Transitions: Integrating Fossils, Proxies, and Models III

GSA Geobiology & Geomicrobiology Division; Paleontological Society; Geochemical Society
A. D. Muscente, Natalia Bykova, Jesse S. Broce and James D. Schiffbauer, Session Chairs
Paper #
Start Time
1:30 PM
HOW 'COMPLEX' WERE EDIACARAN ECOSYSTEMS?
DARROCH, Simon A.F., Earth and Environmental Sciences, Vanderbilt, 5726 Stevenson Center, 7th floor, Nashville, TN 37240; Earth and Environmental Sciences, Vanderbilt University, PMB 351805 2301 Vanderbilt Place, Nashville, TN 37235-1805, RAHMAN, Imran A., School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol, BS8 1RJ, United Kingdom, WAGNER, Peter J., Dept. of Paleobiology, Smithsonian Institution, National Museum of Natural History, Washington, DC 20560, RACICOT, Rachel, The Dinosaur Institute, Natural History Museum of Los Angeles County, Los Angeles, CA 90007 and LAFLAMME, Marc, Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, ON L5L 1C6, Canada, simon.darroch@gmail.com
1:45 PM
EDIACARAN DISTRIBUTIONS IN SPACE AND TIME: TESTING ASSEMBLAGE CONCEPTS OF THE EARLIEST MACROSCOPIC BODY-FOSSILS
BOAG, Thomas H., Department of Geological Sciences, Stanford University, 450 Serra Mall Bldg. 320, Palo Alto, CA 94305, DARROCH, Simon A.F., Earth and Environmental Sciences, Vanderbilt University, PMB 351805 2301 Vanderbilt Place, Nashville, TN 37235-1805 and LAFLAMME, Marc, Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, ON L5L 1C6, Canada, tomboag@stanford.edu
2:00 PM
IMPACT OF SPATIAL HETEROGENEITIES ON EDIACARAN COMMUNITIES FROM MISTAKEN POINT, NEWFOUNDLAND
MITCHELL, Emily G., Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom, ek338@cam.ac.uk
2:15 PM
EXPLORING THE EDIACARAN BIOTA OF THE DIGERMULEN PENINSULA, NORTHERN NORWAY
HÖGSTRÖM, Anette E.S.1, TAYLOR, Wendy L.2, JENSEN, Sören3, EBBESTAD, Jan Ove R.4, HØYBERGET, Magne5, MEINHOLD, Guido6, PALACIOS, Teodoro3, NOVIS, Linn1 and OU, Zhiji1, (1)Tromsø University Museum, UiT, the Arctic University of Norway, Tromsø, N-9036, Norway, (2)Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa, (3)Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, 06006, Spain, (4)Museum of Evolution, Uppsala University, Norbyvägen 22, Uppsala, SE-75236, Sweden, (5)Rennesveien 14, Mandal, N-4513, Norway, (6)Geoscience Center, University of Goettingen, Goldschmidtstr. 3, Goettingen, 37077, Germany, anette.hogstrom@uit.no
2:30 PM
ECOLOGICAL COMPLEXITY AND ENVIRONMENTAL PREFERENCES IN EDIACARAN SKELETAL METAZOANS
PENNY, Amelia1, WOOD, Rachel2, ZHURAVLEV, Andrey Yu.3, CURTIS, Andrew2, BOWYER, Fred1 and TOSTEVIN, Rosalie4, (1)School of GeoSciences, University of Edinburgh, Grant Insitute, The King's Buildings, West Mains Road, Edinburgh, EH9 3JW, United Kingdom, (2)School of GeoSciences, University of Edinburgh, Grant Institute, The King's Buildings, West Mains Road, Edinburgh, EH9 3JW, United Kingdom, (3)Department of Biological Evolution, Faculty of Biology, Moscow State University named after M.V. Lomonosov, Leninskie Gory, Moscow, 119991, Russia, (4)Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, United Kingdom, A.M.Penny@ed.ac.uk
2:45 PM
EVOLUTIONARY AND ECOLOGICAL IMPLICATIONS OF BODY SIZE DYNAMICS OF EDIACARA ORGANISMS
O'NEIL, Gretchen R.1, HUNTLEY, John Warren2 and SCHIFFBAUER, James D.2, (1)University of Missouri-Columbia, 1714 Mizzou Pl, Columbia, MO 65201, (2)Geological Sciences, University of Missouri, 101 Geological Sciences Building, Columbia, MO 65211, gro7wb@mail.missouri.edu
3:00 PM
STUDIES IN EDIACARAN PRESERVATION
LAFLAMME, Marc, Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road, Mississauga, ON L5L 1C6, Canada, DARROCH, Simon A.F., Earth and Environmental Sciences, Vanderbilt University, PMB 351805 2301 Vanderbilt Place, Nashville, TN 37235-1805 and SCHIFFBAUER, James D., Geological Sciences, University of Missouri, 101 Geological Sciences Building, Columbia, MO 65211, marc.laflamme@utoronto.ca
 
3:15 PM
Break
3:30 PM
THE EDIACARAN-CAMBRIAN TRANSITION IN THE DEEP SPRING FORMATION AT MT. DUNFEE, NV, USA
SMITH, Emily F., Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138, NELSON, Lyle L., Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, EYSTER, Athena E., Department of Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138 and MACDONALD, Francis A., Department of Earth and Planetary Sciences, Harvard University, 2, Cambridge, MA 02138, efsmith@fas.harvard.edu
3:45 PM
TRACE FOSSILS IN 3D! MICRO-CT RECONSTRUCTIONS OF THE LATE EDIACARAN TRACE FOSSIL LAMONTE TREVALLIS, FROM THE YANGTZE GORGES AREA, SOUTH CHINA
MEYER, Michael, Geophysical Laboratory, Carnegie Institution of Science, 5251 Broad Branch Rd. NW, Washington, DC 20015-1305 and POLYS, Nick, Department of Computer Science, Virginia Tech Information Technology, 3030A Torgersen Hall, Blacksburg, VA 24060, mike.meyer.geo@gmail.com
4:00 PM
DEPOSITIONAL AND PRESERVATIONAL ENVIRONMENTS OF THE EDIACARA MEMBER, RAWNSLEY QUARTZITE (SOUTH AUSTRALIA): ASSESSING THE TIMING OF ‘FERRUGINIZATION’
TARHAN, Lidya G., Department of Geology and Geophysics, Yale University, P.O. Box 208109, New Haven, CT 06520, PLANAVSKY, Noah J., Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06511, DROSER, Mary L., Department of Earth Sciences, University of California, Riverside, 900 University Ave, Riverside, CA 92521 and GEHLING, James G., South Australian Museum, Adelaide, 5000, Australia, lidya.tarhan@yale.edu
4:15 PM
SIZE ‘EM UP: BODY SIZE DISTRIBUTIONS OF DICKINSONIA COSTATA FROM NILPENA, FLINDERS RANGES, SOUTH AUSTRALIA
EVANS, Scott D., Geology, University of California at Riverside, Riverside, CA 92501, DROSER, Mary L., Department of Earth Sciences, University of California, Riverside, 900 University Ave, Riverside, CA 92521 and GEHLING, James, South Australian Museum, Adelaide, 5000, Australia, S.D.Evans723@gmail.com
4:30 PM
DISCOIDAL FORMS AS EVIDENCE OF COMPLEX LIFE:  A CAUTIONARY TALE AND A NEW VARIETY OF MISS FROM THE EDIACARAN ROCKS OF THE LONG MYND, ENGLAND
MENON, Latha R.1, MCILROY, Duncan2 and BRASIER, Martin D.1, (1)Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, United Kingdom, (2)Department of Earth Sciences, Memorial University of Newfoundland, 300 Prince Phillip Drive, St John's, NF A1B 3X5, Canada, menon891@btinternet.com
4:45 PM
A RECIPE FOR CYANOBACTERIAL FOSSILIZATION IN SILICICLASTIC ENVIRONMENTS
NEWMAN, Sharon1, MARIOTTI, Giulio2 and BOSAK, Tanja1, (1)Dept. of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, (2)Department of Oceanography and Ocean Sciences, Louisiana State University, Baton Rouge, LA 70803, sharon.newman@mit.edu
5:00 PM
FORMATION AND PRESERVATION OF MICROBIAL TEXTURES IN SILICICLASTIC SEDIMENTS
BOSAK, Tanja, Dept. of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139; Department of Earth, Atmospheric, and Planetary Sciences, MIT, Cambridge, MA 02139, NEWMAN, Sharon, Dept. of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, PRUSS, Sara B., Department of Geosciences, Smith College, Northampton, MA 01063 and MARIOTTI, Giulio, Department of Oceanography and Ocean Sciences, Louisiana State University, Baton Rouge, LA 70803, tbosak@MIT.EDU
 
5:20 PM
Concluding Remarks
See more of: Technical Sessions