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New insights into the chemical composition of chitinozoans

Abstract : The chemical structure of isolated chitinozoan specimens extracted from Early Silurian marine rocks has been investigated by micro-FTIR, laser micro-Raman spectroscopy and laser micropyrolysis-gas chromatography/mass spectrometry (LmPy- GC/MS). The samples were subjected to relatively low thermal stress as attested by several indices. LmPy-GC/MS and micro-FTIR indicate that chitinozoans consist mostly of a kerogen network dominated by aromatic groups with a low contribution of aliphatics and oxygen- or nitrogen-bearing compounds. No chitin-related product was found in the pyrolysate of the chitinozoans, confirming previous findings on the occurrence of this biopolymer in the fossil record.
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Submitted on : Friday, May 25, 2007 - 10:40:42 AM
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Jérémy Jacob, Florentin Paris, Olivier Monod, Meller A. Miller, Peng Tang, et al.. New insights into the chemical composition of chitinozoans. Organic Geochemistry, Elsevier, 2007, 38 (10), pp.1782-1788. ⟨10.1016/j.orggeochem.2007.06.005⟩. ⟨insu-00149308⟩



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