Johan Lindgren
Senior lecturer
Molecular preservation of the pigment melanin in fossil melanosomes.
Author
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