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
Vascularization and odontode structure of a dorsal ridge spine of Romundina stellina Ørvig 1975
Imperial Coll London, Biol Dept, Silwood Pk Campus, Ascot, Berks, England.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Evolution and Developmental Biology. Univ Ottawa, Ctr Adv Res Environm Genom, Ottawa, ON, Canada.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, Science for Life Laboratory, SciLifeLab. European Synchrotron Radiat Facil, Grenoble, France.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Evolution and Developmental Biology.
Show others and affiliations
2017 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 12, no 12, article id e0189833Article in journal (Refereed) Published
Abstract [en]

There are two types of dermal skeletons in jawed vertebrates: placoderms and osteichthyans carry large bony plates (macromery), whereas chondrichthyans and acanthodians are covered by small scales (micromery). Fin spines are one of the last large dermal structures found on micromeric taxa and offer a potential source of histology and morphology that can be compared to those found on macromeric groups. Dermal fin spines offer a variety of morphology but aspects of their growth modes and homology are unclear. Here, we provide detailed descriptions of the microstructure and growth of a dorsal ridge spine from the acanthothoracid placoderm, Romundina stellina, using virtual three-dimensional paleohistological datasets. From these data we identify several layers of dentine ornamentation covering the lateral surfaces of the spine and reconstructed their growth pattern. We show that this spine likely grew posteriorly and proximally from a narrow portion of bone located along the leading edge of the spine. The spine is similarly constructed to the scales with a few exceptions, including the absence of polarized fibers distributed throughout the bone and the presence of a thin layer of perichondral bone. The composition of the spine (semidentine odontodes, dermal bone, perichondral bone) is identical to that of the Romundina dermal plates. These results illustrate the similarities and differences between the dermal tissues in Romundina and indicate that the spine grew differently from the dentinous fin spines from extant and fossil chondrichthyans. The morphology and histology of Romundina is most similar to the fin spine of the probable stem osteichthyan Lophosteus, with a well-developed inner cellular bony base and star-shaped odontodes on the surface. Results from these studies will undoubtedly have impact on our understanding of fossil fin spine histology and evolution, contributing to the on-going revision of early gnathostome phylogeny.

Place, publisher, year, edition, pages
2017. Vol. 12, no 12, article id e0189833
National Category
Evolutionary Biology
Identifiers
URN: urn:nbn:se:uu:diva-338569DOI: 10.1371/journal.pone.0189833ISI: 000419006200048PubMedID: 29281687OAI: oai:DiVA.org:uu-338569DiVA, id: diva2:1172671
Funder
Swedish Research Council, 2012-4673Available from: 2018-01-10 Created: 2018-01-10 Last updated: 2018-02-19Bibliographically approved

Open Access in DiVA

fulltext(19092 kB)4 downloads
File information
File name FULLTEXT01.pdfFile size 19092 kBChecksum SHA-512
170d77fd9112fc96d556a79955ce6eba79b0cd4b5c0cf2aa57a7266c08a330b8ebec413bd37957862b30d8acf1763c4c0ea4fe61cfb51b5bb04faa454c029ce3
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Qu, QinmingSanchez, SophieAhlberg, Per ErikHaitina, Tatjana
By organisation
Evolution and Developmental BiologyScience for Life Laboratory, SciLifeLab
In the same journal
PLoS ONE
Evolutionary Biology

Search outside of DiVA

GoogleGoogle Scholar
Total: 4 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 101 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