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Johan Lindgren

Johan Lindgren

Senior lecturer

Johan Lindgren

Melanosomes and ancient coloration re-examined: A response to Vinther 2015 (DOI 10.1002/bies.201500018).

Author

  • Mary Higby Schweitzer
  • Johan Lindgren
  • Alison Moyer

Summary, in English

Round to elongate microbodies associated with fossil vertebrate soft tissues were interpreted as microbial traces until 2008, when they were re-described as remnant melanosomes - intracellular, pigment-containing eukaryotic organelles. Since then, multiple claims for melanosome preservation and inferences of organismal color, behavior, and physiology have been advanced, based upon the shape and size of these microstructures. Here, we re-examine evidence for ancient melanosomes in light of information reviewed in Vinther (2015), and literature regarding the preservation potential of microorganisms and their exopolymeric secretions. We: (i) address statements in Vinther's recent (2015) review that are incorrect or which misrepresent published data; (ii) discuss the need for caution in interpreting "voids" and microbodies associated with degraded fossil soft tissues; (iii) present evidence that microorganisms are in many cases an equally parsimonious source for these "voids" as are remnant melanosomes; and (iv) suggest methods/criteria for differentiating melanosomes from microbial traces in the fossil record.

Department/s

  • Lithosphere and Biosphere Science

Publishing year

2015

Language

English

Pages

1174-1183

Publication/Series

BioEssays

Volume

37

Issue

11

Document type

Journal article

Publisher

John Wiley and Sons

Topic

  • Geology

Status

Published

ISBN/ISSN/Other

  • ISSN: 0265-9247