9:00 AM – 10:00 AM	Check-In and Breakfast
10:00 AM – 10:15 AM	Welcome and Introduction Maya Gomes, Johns Hopkins University
SESSION 1	Sink or Swim: Microbial Adventures in Particle Dynamics and Sedimentation
10:15 AM – 11:15 AM	Organic Carbon in Sinking and Suspended Zooplankton Carcasses in the Oligotrophic Eastern Tropical North Pacific Oxygen Deficient Zone Fuels N2 Production Clara A. Fuchsman, UMCES Horn Point Laboratory
	Using size resolved particle dynamics models, constrained with in-situ data, to explore the growth and mortality of particle associated bacteria in the mesopelagic Atlantic Ocean. Jacob A. Cram, University of Maryland Center for Environmental Science
	Microplastics, microbes, and the emergence of bioconvection Shravan Pradeep, University of Pennsylvania
11:15 AM – 11:30 AM	Coffee Break
SESSION 2	Rock Solid Evidence: Decoding Ancient Biogeochemical Clues
11:30 AM – 12:30 PM	Patterns of life and death during the Cambrian SPICE event in Appalachia Amy Hagen, Virginia Tech
	Time-integrated molecular biosignatures provide high-fidelity insights into the origin(s) and early evolution of Life on Earth and beyond Jasmina Wiemann, Johns Hopkins University
	A time-integrative biomineralization signal reveals templated silica precipitation as a driver of cellular preservation in Phanerozoic stromatolitic fossils Liam Olden, Johns Hopkins University
12:30 PM – 1:30 PM	Lunch
SESSION 3	Outwit, Outplay, Outlast: Microbial Strategies for Surviving Environmental Change
1:30 PM – 2:30 PM	Glycogen accumulation via gas fermentation by the marine hydrogen- oxidizing bacterium Hydrogenovibrio marinus Brandon C. Enalls, US Naval Research Laboratory
	Deciphering the geobiological formation of isotopically superheavy pyrites in the modern to understand their environmental relevance in oceans past Isabel Baker, Johns Hopkins University
	Coupling of excitation energy to photochemistry in natural marine phytoplankton communities Heshani Pupulewattea, Rutgers University – New Brunswick
2:30 PM – 2:45 PM	Coffee Break
SESSION 4	Minerals, Metabolism, and Movement: The Geology and Evolution of Vertebrates
2:45 PM – 3:45 PM	A Geochemical Perspective on Bioapatite Biomineralization Katelyn Gray, Johns Hopkins University
	Time-integrated biosignatures applied to new fossils combined with genomic evidence suggest an archosaurian origin of avian endothermy Megan Miller, Johns Hopkins University
	New short-armed troodontid sheds light on the evolutionary assembly of the diverse paravian body plan Matteo Fabbri, Center of Functional Anatomy & Evolution, Johns Hopkins School of Medicine
3:45 PM – 4:00 PM	Walk to Olin Hall
4:00 PM – 6:00 PM	Poster Presentations in Olin Hall

No.	Author	Poster Title
1	Akam, Sajjad A.	Sedimentary Imprints of Changes in Carbon and Iron Cycling in an Urban Meromictic Lake
2	Awoyemi, Olushola D.	Physiology and mechanisms of iron oxidation of the heterotroph Leptothrix cholodnii SP-6
3	Block, Kaleigh	Influence of Carbon Substrate and Iron Oxide Minerals on Methane Production and Magnetic Mineral Formation in Salt Marsh Sediments
4	Chen, A.E.	Characterizing Environments that Preserve Biosignatures in the Atacama Desert as a Modern-Day Mars Analog
5	Culpepper-Wehr, Amalia	Sulfide oxidation kinetics and stable isotope geochemistry in microbially mediated and abiotic environments
6	Davis, David M.	Halophilic Archaea Stimulate Mineral Precipitation in Evaporitic Hypersaline Environments
7	Gilmore, Lauren	Ca Isotopes in Tooth Enamel and their Potential for Environmental Reconstruction
8	Hantsoo, Kalev	Effects of large-scale gypsum weathering on the early Cenozoic carbon cycle
9	Huang, E.J.	Effects of state space misspecification on phylogenetic reconstruction
10	Irizarry, Kayla	Carbon Isotope Variability and the Drumian Isotope Carbon Excursion (DICE) in the Middle Cambrian of SW Montana
11	Jong, Bor-Jiun	Can Lithium Isotopes (7Li/6Li) Trace Reverse Weathering over the Cenozoic?
12	Kalinowski, Michael	A Comparison of Bioelectrochemical Tools for Sulfide Bioremediation in Oyster Aquaculture Sediments
13	Kreger, Maya	Microbiology of subseafloor metal-reducing primary producers
14	McCormick, Michael L.	Redox-Inverted Cold Seeps: Sulfur Oxidation at Oxidant Seeps in a Dark Sulfidic Lake Basin
15	Pérez-Rodríguez, Ileana	Cultivation of Anaerobic Chemosynthetic Life from a Subseafloor Crustal Aquifer
16	Phan, Jonathan	Genetic analysis of the selenate reductase operon in Enterobacter cloacae
17	Puetz, Emma	Evolutionary Influences of Cerebral Volumes on Complex Behaviors Across Dinosauria
18	Torres, Fernando	Genetic polymorphism and the early amniote fossil record: conflicts and congruence in deep evolutionary history
19	Weiske, Jennifer	Size and Carbon-Nitrogen Content of Collodaria Colonies Within the Sargasso Sea
20	Wood, Leland	Composition of Sedimentary and Hydrothermal Organic Carbon across a Heating Gradient in Guaymas Basin
21	Young, Angelina	Towards a mechanism for iron acquisition by endolithic cyanobacteria
22	Helms, Lucy A.	Fossil abundance and diversity across the Great Ordovician Biodiversification Event, Pogonip Group, Arrow Canyon Range, Nevada
23	Tsuru Girard, Maelle	Diversity of shell-forming mechanisms across the Tonian and Cryogenian
24	Bondzie-Selby, Isaac	An experimental calibration between dual carbonate clumped isotope (Δ47 and Δ48) in dolomite and temperature
25	Foster, William	The Deep Time Origins of the Turtle Body Plan: Novel Insights from Fossils and Embryos
26	Gnanadesikan, Anand	Using genes to guide modeling in Chesapeake Bay
27	Gomes, Maya	How changes in organic matter affect sulfur isotope records: Insights into Earth history from stinky mud
28	Meyer, Fran	Primary host phases of uranium in marine phosphorites: understanding the sinks of the marine uranium cycle
29	Moore, Eli K.	Top-Down Targeted Network Analysis of the Critical Minerals Mapping Initiative Database