Title: Macromolecular composition of Palaeozoic scolecodonts: insights into the molecular taphonomy of zoomorphs
Abstract: LethaiaVolume 43, Issue 3 p. 334-343 Macromolecular composition of Palaeozoic scolecodonts: insights into the molecular taphonomy of zoomorphs SURYENDU DUTTA, SURYENDU DUTTASearch for more papers by this authorCHRISTOPH HARTKOPF-FRÖDER, CHRISTOPH HARTKOPF-FRÖDERSearch for more papers by this authorULRICH MANN, ULRICH MANNSearch for more papers by this authorHEINZ WILKES, HEINZ WILKESSearch for more papers by this author RAINER BROCKE, RAINER BROCKESearch for more papers by this authorNORBERT BERTRAM, NORBERT BERTRAMSearch for more papers by this author SURYENDU DUTTA, SURYENDU DUTTASearch for more papers by this authorCHRISTOPH HARTKOPF-FRÖDER, CHRISTOPH HARTKOPF-FRÖDERSearch for more papers by this authorULRICH MANN, ULRICH MANNSearch for more papers by this authorHEINZ WILKES, HEINZ WILKESSearch for more papers by this author RAINER BROCKE, RAINER BROCKESearch for more papers by this authorNORBERT BERTRAM, NORBERT BERTRAMSearch for more papers by this author First published: 03 August 2010 https://doi.org/10.1111/j.1502-3931.2009.00193.xCitations: 4 Suryendu Dutta [[email protected]], Department of Earth Sciences, Indian Institute of Technology Bombay, Mumbai-400076, India; Christoph Hartkopf-Fröder [[email protected]], Geologischer Dienst Nordrhein-Westfalen, De-Greiff-Str. 195, D-47803 Krefeld, Germany; Ulrich Mann [[email protected]], Forschungszentrum Jülich GmbH, Institut für Chemie und Dynamik der Geosphäre, D-52425 Jülich, Germany; Heinz Wilkes [[email protected]], Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Telegrafenberg, D-14473 Potsdam, Germany; Rainer Brocke [[email protected]], Senckenberg Forschungsinstitut und Naturmuseum, Palynologie und Mikrovertebrata des Paläozoikums, Senckenberganlage 25, D-60325 Frankfurt/Main, Germany; Norbert Bertram [[email protected]], LTA-Labor für Toxikologie und Analytik, Friedrichshöher Str. 28, D-53639 Königswinter, Germany; manuscript received on 02/04/2009; manuscript accepted on 09/07/2009. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract Dutta, S., Hartkopf-Fröder, C., Mann, U., Wilkes, H., Brocke, R. & Bertram, N. 2010: Macromolecular composition of Palaeozoic scolecodonts: insights into the molecular taphonomy of zoomorphs. Lethaia, Vol. 43, pp. 334–343. Biogeochemistry and molecular taphonomy of biopolymers of marine zoomorphs are poorly known. In order to obtain insights into this issue we report on the biogeomacromolecular composition of hand-picked, well-preserved scolecodonts of Ordovician, Silurian and Devonian age using micro-Fourier transform infrared (micro-FTIR) spectroscopy, Curie point pyrolysis-gas chromatography-mass spectrometry (Cupy-GC-MS) and tetramethylammonium hydroxide (TMAH)-assisted thermochemolysis-GC-MS. The present study reveals that scolecodonts are composed of both aliphatic and aromatic moieties. The micro-FTIR spectra of scolecodonts are characterized by aliphatic CHx (3000–2800 and 1460–1450/cm) and CH3 (1375/cm) absorptions and aromatic C=C (1560–1610/cm) and CH (3050/cm and 700–900/cm) absorptions. The major pyrolysis products from the scolecodonts include aromatic hydrocarbons such as alkylbenzenes, alkylnaphthalenes and alkylphenols. Aliphatic hydrocarbons are represented by a homologous series of n-alkenes and n-alkanes. The compounds released upon thermochemolysis with TMAH are saturated and unsaturated fatty acids (as their methyl esters), n-alkenes/alkanes and aromatic acids (as their methyl esters). No protein/amino acid-derived compounds have been recognized in the pyrolysates or in the thermochemolysates, and it is concluded that protein/amino acid-related compounds, which are commonly found in the jaws of extant polychaetes, were destroyed due to diagenetic processes. Obviously, excellent morphological preservation and low thermal alteration are not paralleled by a similar degree of chemical preservation. □Biogeomacromolecules, micro-FTIR, pyrolysis-GC-MS, scolecodonts, thermochemolysis-GC-MS. Citing Literature Volume43, Issue3September 2010Pages 334-343 RelatedInformation
Publication Year: 2009
Publication Date: 2009-10-28
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 13
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