HU, Shusheng, Peabody Museum of Natural History, Yale University, 170 Whitney Avenue, New Haven, CT 06511, SIVER, Peter A., Botany Department, Connecticut College, New London, CT 06320 and WOLFE, Alexander P., Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada, shusheng.hu@yale.edu, shusheng.hu@yale.edu

MANDER, Luke¹, COLLINSON, Margaret E.², CHALONER, William G.², BRAIN, Anthony P.R.³ and LONG, David G.⁴, (1)Department of Plant Biology, University of Illinois at Urbana-Champaign, 505 S. Goodwin Avenue, Urbana, IL 61801, (2)Department of Earth Sciences, Royal Holloway University of London, Egham Hill, Egham, TW20 0EX, United Kingdom, (3)Centre for Ultrastructural Imaging, King's College London, New Hunts House, Guy's Campus, London Bridge, London, SE1 9UL, United Kingdom, (4)Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, United Kingdom, luke.mander@gmail.com, luke.mander@gmail.com

EDWARDS, Lucy E., U.S. Geological Survey, MS926A National Center, Reston, VA 20192, leedward@usgs.gov, leedward@usgs.gov

PORTER, Susannah M., Department of Earth Science, University of California at Santa Barbara, Santa Barbara, CA 93106, porter@geol.ucsb.edu, porter@geol.ucsb.edu

STROTHER, Paul Klee, Earth and Environmental Sciences, Boston College, Weston Observatory, 381 Concord Road, Weston, MA 02493 and WELLMAN, Charles H., Animal & Plant Sciences, The University of Sheffield, Alfred Denny Building, Sheffield, S10 2TN, United Kingdom, strother@bc.edu, strother@bc.edu

SHELDON, Nathan D., Earth and Environmental Sciences, University of Michigan, 2534 CC Little Building, Ann Arbor, MI 48109, nsheldon@umich.edu, nsheldon@umich.edu

BERALDI, Hugo, School of Life Sciences, Arizona State University, Life Sciences E-Wing, Room 422, Tempe, AZ 85287, FARMER, J.D., School of Earth and Space Exploration, Arizona State University, PO Box 871404, Tempe, AZ 85287 and GARCIA-PICHEL, Ferran, School of Life Sciences, Arizona State University, LSE 422, Tempe, AZ 85287, ferran@asu.edu, ferran@asu.edu

SCHIFFBAUER, James D.¹, XIAO, Shuhai², SEN SHARMA, Kriti³ and WANG, Ge³, (1)ICTAS Nanoscale Characterization and Fabrication Laboratory, Virginia Tech, Blacksburg, VA 24061, (2)Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, (3)School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA 24061, jdschiff@vt.edu, jdschiff@vt.edu

PAPINEAU, Dominic, Department of Earth and Environmental Sciences, Boston College, Devlin Hall 213, 140 Commonwealth av, Chestnut Hill, MA 02467, PUROHIT, Ritesh, Department of Geology, Government College Sirohi, Rajasthan, Sirohi, India-307001, India and FOGEL, Marilyn, Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, dominic.papineau@bc.edu, dominic.papineau@bc.edu

STEVENS, Eric, Geology, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105 and SUMNER, Dawn Y., Geology, University of California, Davis, One Shields Avenue, Davis, CA 95616, ewstevens@stthomas.edu, ewstevens@stthomas.edu

NOFFKE, Nora¹, CHRISTIAN, Daniel R.¹ and HAZEN, Robert M.², (1)Ocean, Earth & Atmospheric Sciences, Old Dominion University, 4600, Elkhorn Avenue, Norfolk, VA 23529, (2)Geophysical Laboratory and NASA Astrobiology Institute, Carnegie Institution of Washington, 5251 Broad Branch rd NW, Washington, DC 20015, nnoffke@odu.edu, nnoffke@odu.edu

SCHOPF, J. William, Earth & Space Sciences, University of California, Los Angeles, CSEOL - Geology Building, 595 Charles Young Circle Drive East, Los Angeles, CA 90095-1567, Schopf@ess.ucla.edu, Schopf@ess.ucla.edu