29 Evolution of Life in the Cambrian Seas: Biotic, Biogeochemical, and Sedimentological Contexts (Posters)

This session is dedicated to studies that illuminate the biotic, geobiological, sedimentological, and geochemical contexts of the evolution of early animal life in the oceans, with a particular focus on the Cambrian Period.

Sunday, 19 October 2025
8:00 AM - 5:30 PM
HBGCC, Hall 1

Participants

• Chair Rudy Lerosey-Aubril
• Chair Robert Gaines
• Chair Javier Ortega-Hernandez
• Chair Lidya Tarhan

Presentations

• 8:00 AM
  A Paleontological Perspective on the Sister Group of Metazoans from Cambrian Sites of Exceptional Preservation
  Madeleine Waskom, Harvard University, Cambridge, MA and Javier Ortega-Hernandez, Harvard University, Cambridge, MA
  412294 (Technical Sessions)
• 8:00 AM
  Paleoenvironmental Analysis of the Earliest Cambrian Trilobites in Laurentia
  Lily Dodd, University of Southern California, Los Angeles, CA and David Bottjer, Univ Southern California Dept Earth Sci, Los Angeles, CA
  412443 (Technical Sessions)
• 8:00 AM
  Evidence for convergent evolution of large body size in Early Paleozoic artiopodans
  Sarah Losso, Harvard University, Cambridge, MA and Danielle de Carle, University of Toronto, Toronto, Ontario and Karma Nanglu, University of California Riverside, Riverside, CA and Javier Ortega-Hernández, Harvard University, Cambridge, MA
  412991 (Technical Sessions)
• 8:00 AM
  New Drumian deuterostomes from western Utah
  Javier Ortega-Hernandez, Harvard University, Cambridge, MA and Rudy Lerosey-Aubril, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA
  413023 (Technical Sessions)
• 8:00 AM
  Currents of Change: Storm-Induced Sedimentation and Biotic Richness of the Upper Cambrian Davis Formation, Missouri
  Natalia Bykova, University of Missouri, Columbia, MO and Haley Vantoorenburg, University of Missouri, Columbia, MO and Cassandra Bennett, University of Missouri, Columbia, MO and Rebecca Tede, University of Missouri, Columbia, MO and Ashley Russo, University of Missouri, Columbia, MO and Asa Kaplan, Missouri Institute of Natural Science, Springfield, MO and Tara Selly, University of Missouri, Columbia, MO and James Schiffbauer, University of Missouri, Columbia, MO
  413729 (Technical Sessions)
• 8:00 AM
  Si Isotope Analyses of Cambrian-Ordovician Sponge Spicules and Radiolarians Indicate Decreased dSi Concentrations in Early Paleozoic Oceans
  Nicole Mizrahi, University of Colorado Boulder (Department of Geological Sciences), Boulder, CO and Qing Tang, Nanjing University (School of Earth Sciences and Engineering), Nanjing and Talia Karim, University of Colorado Museum of Natural History, Boulder, CO and Shuhai Xiao, Virginia Tech (Department of Geosciences and Global Change Center), BLACKSBURG, VA and Marjorie Cantine, University of Washington (Department of Earth and Space Sciences), Seattle, WA and Woodward Fischer, California Institute of Technology (Division of Geological & Planetary Sciences), Pasadena, CA and Carl Simpson, University of Colorado Boulder (Department of Geological Sciences), Boulder, CO and Lizzy Trower, University of Colorado Boulder (Department of Geological Sciences), Boulder, CO
  414216 (Technical Sessions)
• 8:00 AM
  Anoxia Intensified in Shallow Waters During the Steptoean Positive Carbon Isotope Excursion (SPICE) in Eastern Nevada
  Fatima Flores, The University of Texas at El Paso, El Paso, Texas and Kayla Irizarry, Pennsylvania State University, State College, Pennsylvania and Kimberly Lau, Pennsylvania State University, State College, Pennsylvania and Mark Patzkowsky, Pennsylvania State University, State College, Pennsylvania
  414749 (Technical Sessions)