uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
Three-dimensional virtual histology of silurian osteostracan scales revealed by synchrotron radiation microtomography
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology. (Per Ahlberg)ORCID iD: 0000-0002-8291-8493
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Evolution and Developmental Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Evolution and Developmental Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Evolution and Developmental Biology.
2015 (English)In: Journal of morphology (1931. Print), ISSN 0362-2525, E-ISSN 1097-4687, Vol. 276, no 8, 873-888 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2015. Vol. 276, no 8, 873-888 p.
National Category
Evolutionary Biology
Research subject
Earth Science with specialization in Historical Geology and Palaeontology
Identifiers
URN: urn:nbn:se:uu:diva-238054DOI: 10.1002/jmor.20386ISI: 000358371700001OAI: oai:DiVA.org:uu-238054DiVA: diva2:769962
Funder
EU, European Research Council, 233111Knut and Alice Wallenberg Foundation
Available from: 2014-12-09 Created: 2014-12-09 Last updated: 2017-12-05Bibliographically approved
In thesis
1. Three-dimensional Virtual Histology of Early Vertebrate Scales Revealed by Synchrotron X-ray Phase-contrast Microtomography
Open this publication in new window or tab >>Three-dimensional Virtual Histology of Early Vertebrate Scales Revealed by Synchrotron X-ray Phase-contrast Microtomography
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Vertebrate hard tissues first appeared in the dermal skeletons of early jawless vertebrates (ostracoderms) and were further modified in the earliest jawed vertebrates. Fortunately, histological information is usually preserved in these early vertebrate fossils and has thus been studied for more than a century, done so by examining thin sections, which provide general information about the specific features of vertebrate hard tissues in their earliest forms. Recent progress in synchrotron X-ray microtomography technology has caused a revolution in imaging methods used to study the dermal skeletons of early vertebrates. Virtual thin sections obtained in this manner can be used to reconstruct the internal structures of dermal skeletons in three-dimensions (3D), such as vasculature, buried odontodes (tooth-like unites) and osteocytes. Several body scales of early vertebrates have been examined using this imaging method and in situ 3D models of internal structures are created. Andreolepis (an early osteichthyan) scale shows linear growth pattern of odontodes in early developmental stage, which is not observable in traditional thin sections. The scale of another early osteichthyan Psarolepis was studied in the same way. Comparison between Andreolepis and Psarolepis shows that cosmine, a tissue complex in dermal skeleton of early sarcopterygians, originated by a developmental change of odontode shape. Two scales of osteostracans, a group of extinct jawless vertebrates, were studied in 3D and more details have been revealed in comparison to previous results based solely on 2D thin sections. 3D data enables us to compare the vasculature and canal system in different taxa in great detail, which forms the basis of formulating primary homology hypothesis and phylogenetic characters.

The new data resulting from this study suggests that vertebrate fossils have preserved much more histological information than we currently appreciate, and provide a new data source of microanatomical structures inside the fossils that can contribute new characters for phylogenetic analysis of early jawed vertebrates.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2015. 49 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1213
Keyword
3D virtual paleohistology, scales, ontogeny, jawed vertebrates, phylogeny
National Category
Evolutionary Biology
Research subject
Biology; Earth Science with specialization in Historical Geology and Palaeontology
Identifiers
urn:nbn:se:uu:diva-238056 (URN)978-91-554-9128-4 (ISBN)
Public defence
2015-02-02, Lindahlsalen, Norbyvägen 18A, Uppsala, 14:00 (English)
Opponent
Supervisors
Funder
EU, European Research Council, 233111
Available from: 2015-01-09 Created: 2014-12-09 Last updated: 2015-02-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Qu, QingmingBlom, Henning

Search in DiVA

By author/editor
Qu, QingmingBlom, Henning
By organisation
Department of Organismal BiologyEvolution and Developmental Biology
In the same journal
Journal of morphology (1931. Print)
Evolutionary Biology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 590 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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