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Discovery of 505-million-year old chitin in the basal demosponge Vauxia gracilenta
Ehrlich, H.; Rigby, J.K.; Botting, J.P.; Tsurkan, M.V.; Werner, C.; Schwille, P.; Petrasek, Z.; Pisera, A.; Simon, P.; Sivkov, V.N.; Vyalikh, D.V.; Molodtsov, S.L.; Kurek, D.; Kammer, M.; Hunoldt, S.; Born, R.; Stawski, D.; Steinhof, A.; Bazhenov, V.V.; Geisler, T. (2013). Discovery of 505-million-year old chitin in the basal demosponge Vauxia gracilenta. NPG Scientific Reports 3(3497): 6 pp. http://hdl.handle.net/10.1038/srep03497
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322, more
Peer reviewed article  

Available in  Authors 

Keywords
    Chitin; Fossils; Demospongiae [WoRMS]; Vauxia gracilenta; Marine
Author keywords
    Vauxia gracilenta

Authors  Top 
  • Ehrlich, H.
  • Rigby, J.K.
  • Botting, J.P.
  • Tsurkan, M.V.
  • Werner, C.
  • Schwille, P.
  • Petrasek, Z.
  • Pisera, A.
  • Simon, P.
  • Sivkov, V.N.
  • Vyalikh, D.V.
  • Molodtsov, S.L.
  • Kurek, D.
  • Kammer, M.
  • Hunoldt, S.
  • Born, R.
  • Stawski, D.
  • Steinhof, A.
  • Bazhenov, V.V.
  • Geisler, T.

Abstract
    Sponges are probably the earliest branching animals, and their fossil record dates back to the Precambrian. Identifying their skeletal structure and composition is thus a crucial step in improving our understanding of the early evolution of metazoans. Here, we present the discovery of 505–million-year-old chitin, found in exceptionally well preserved Vauxia gracilenta sponges from the Middle Cambrian Burgess Shale. Our new findings indicate that, given the right fossilization conditions, chitin is stable for much longer than previously suspected. The preservation of chitin in these fossils opens new avenues for research into other ancient fossil groups.

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