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2006 Philadelphia Annual Meeting (22–25 October 2006)

Paper No. 11
Presentation Time: 8:00 AM-12:00 PM

CHEMICAL AND BIOLOGICAL INVESTIGATION OF THE MODERN ANALOG FOR SPHEROIDAL MICROFOSSILS


KODNER, Robin, Organismic and Evolutionary Biology, Harvard University, 26 Oxford St, Botanical Museum, Cambridge, MA 02138, KNOLL, Andrew, Botanical Museum, Harvard Univ, 26 Oxford Street, Cambridge, MA 02138, HELM, Rebecca, Eckerd College, St. Petersburg, FL 33711, MARSHALL, Craig, Department Of Chemistry, University of Sydney, Sydney, 2006, Australia and SUMMONS, Roger, Earth and Planetary Sciences, Massachusetts Institute of Technology, 44 Carleton St, E34-246, Cambridge, MA 02138, kodner@fas.harvard.edu

We have examined the chemical nature and ultrastructure of putative green algal microfossils and their modern analogs. This is the first chemical and ultrastructure analysis of the modern prasinophyte green algal phycoma Halosphaera sp? which has previously been affiliated with leiospherid microfossils. Pyrolysis Gas Chromotography Mass Spectrometry, micro Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, and Transmission Electron Microscopy have been used to analyze modern phycoma, microbially degradated phycoma, thermally matured phycoma and fossil leiospherids. Our work agrees with ideas that leiospherid microfossils could represent fossilized phycoma and contributes to new ideas about microfossil preservation.

Session No. 23--Booth# 34

Paleontology/Paleobotany (Posters) I: Paleoecology, Taphonomy, and Early Life
Sunday, 22 October 2006: 8:00 AM-12:00 PM
Geological Society of America Abstracts with Programs. Vol. 38, No. 7, p.65
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