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@ARTICLE{Dutta:6219,
      author       = {Dutta, S. and Hartkopf-Fröder, C. and Mann, U. and Wilkes,
                      H. and Brocke, R. and Bertram, N.},
      title        = {{M}acromolecular composition of {P}alaeozoic scolecodonts:
                      insights into the molecular taphonomy of zoomorphs},
      journal      = {Lethaia},
      volume       = {43},
      issn         = {0024-1164},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-6219},
      pages        = {334 - 343},
      year         = {2010},
      note         = {We would like to thank Forschungszentrum Julich for
                      financial support. SD is grateful to IIT Bombay for
                      providing infrastructural facilities. Mrs K. Witte (Aachen
                      University of Applied Sciences, Germany) is acknowledged for
                      providing access to the micro-FTIR instrument. The authors
                      are grateful to Mats Eriksson and an anonymous reviewer for
                      valuable comments. We gratefully acknowledge Richard M.
                      Fuchs (Harrison, OH, USA), Axel Munnecke (GeoZentrum
                      Nordbayern, Germany) and Jan Bohaty (University of Cologne,
                      Germany) for providing the samples from the Upper Ordovician
                      of Ohio, the Silurian of Gotland and from the Devonian of
                      the Eifel Mountains respectively.},
      abstract     = {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.},
      cin          = {ICG-4},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB793},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Paleontology},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000281200500005},
      doi          = {10.1111/j.1502-3931.2009.00193.x},
      url          = {https://juser.fz-juelich.de/record/6219},
}