Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Crypsis in the pelagic realm: evidence from exceptionally preserved fossil fish larvae from the Eocene Stolleklint Clay of Denmark
Lund University, Sweden.
RISE Research Institutes of Sweden, Materials and Production, Product Realisation Methodology.ORCID iD: 0000-0002-2696-7215
Fur Museum, Denmark.
Fur Museum, Denmark.
Show others and affiliations
2021 (English)In: Palaeontology, ISSN 0031-0239, E-ISSN 1475-4983, Vol. 64, no 6, p. 805-815Article in journal (Refereed) Published
Abstract [en]

Marine deposits of earliest Eocene age in northern Jutland, Denmark, are renowned for yielding diverse teleost assemblages that have proved central for enhancing our understanding of the early evolution of many extant actinopterygian clades. In this study, we investigate diminutive larval fish fossils from the Stolleklint Clay, Ølst Formation, that retain multiple soft-tissue features preserved as distinct dark-coloured stains. To examine the elemental and molecular composition of these soft parts, we employed a combination of time-of-flight secondary ion mass spectrometry (ToF-SIMS), scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS). Our analyses revealed that the preserved structures contain chemically identifiable eumelanin intimately associated with densely aggregated microbodies that are morphologically consistent with melanosome organelles. Thus, we conclude that the carbonaceous structures represent traces of originally melanized body parts, including the eyes and peritoneum. Comparable pigmentation patterns are seen in many extant teleost larvae that use semi-transparency as a means of camouflage in pelagic environments, to suggest a similar visual appearance of the Stolleklint Clay fish fossils. This in turn suggests that adaptations for concealment and UV-protection had already evolved by the beginning of the Eocene, notably during a time interval characterized by an extreme greenhouse climate, when the global fish fauna become increasingly modern in composition. © 2021 The Authors. 

Place, publisher, year, edition, pages
John Wiley and Sons Inc , 2021. Vol. 64, no 6, p. 805-815
Keywords [en]
camouflage, melanin, melanosome, pigmentation, Teleostei, Ølst Formation
National Category
Geology
Identifiers
URN: urn:nbn:se:ri:diva-56711DOI: 10.1111/pala.12574Scopus ID: 2-s2.0-85114763646OAI: oai:DiVA.org:ri-56711DiVA, id: diva2:1601362
Note

Funding details: Vetenskapsrådet, VR, 2019‐03731; Funding text 1: The photograph of the modern sea bream larva shown in Figure 1H is credited to Bernd Ueberschär. Niels Bonde provided taxonomic information on FUM‐N‐12779, FUM‐N‐12781, FUM‐N‐13476, FUM‐N‐16240, NHMD 625460 and FUM‐N‐14772. We thank Annie Marie Kaargaard for the discovery of NHMD 625460. Financial support for this project was provided by a Grant for Distinguished Young Researchers (Award No 642‐2014‐3773; Swedish Research Council) to Johan Lindgren, as well as a project grant (Award No 2019‐03731; Swedish Research Council) to Peter Sjövall. Rana N. S. Sodhi and an anonymous referee commented on an earlier draft of this manuscript.

Available from: 2021-10-07 Created: 2021-10-07 Last updated: 2023-06-05Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Sjövall, Peter

Search in DiVA

By author/editor
Sjövall, Peter
By organisation
Product Realisation Methodology
In the same journal
Palaeontology
Geology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 19 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf