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Johan Lindgren

Johan Lindgren

Senior lecturer

Johan Lindgren

Molecular preservation of the pigment melanin in fossil melanosomes.

Author

  • Johan Lindgren
  • Per Uvdal
  • Peter Sjövall
  • Dan-E Nilsson
  • Anders Engdahl
  • Bo Pagh Schultz
  • Volker Thiel

Summary, in English

Fossil feathers, hairs and eyes are regularly preserved as carbonized traces comprised of masses of micrometre-sized bodies that are spherical, oblate or elongate in shape. For a long time, these minute structures were regarded as the remains of biofilms of keratinophilic bacteria, but recently they have been reinterpreted as melanosomes; that is, colour-bearing organelles. Resolving this fundamental difference in interpretation is crucial: if endogenous then the fossil microbodies would represent a significant advancement in the fields of palaeontology and evolutionary biology given, for example, the possibility to reconstruct integumentary colours and plumage colour patterns. It has previously been shown that certain trace elements occur in fossils as organometallic compounds, and hence may be used as biomarkers for melanin pigments. Here we expand this knowledge by demonstrating the presence of molecularly preserved melanin in intimate association with melanosome-like microbodies isolated from an argentinoid fish eye from the early Eocene of Denmark.

Department/s

  • Lithosphere and Biosphere Science
  • Chemical Physics
  • Functional zoology
  • MAX IV Laboratory
  • Lund Vision Group

Publishing year

2012

Language

English

Publication/Series

Nature Communications

Volume

3

Issue

Online 08 May 2012

Document type

Journal article

Publisher

Nature Publishing Group

Topic

  • Physical Sciences
  • Atom and Molecular Physics and Optics
  • Natural Sciences
  • Geology
  • Zoology

Status

Published

Research group

  • Lund Vision Group

ISBN/ISSN/Other

  • ISSN: 2041-1723