Change search
ReferencesLink to record
Permanent link

Direct link
Late Devonian vertebrates from Siberia: a synchrotron microtomography study of bone bed material
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Biology Education Centre. (Evolution och utvecklingsbiologi)
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This is an investigation of new vertebrate fossil material from the Late Devonian locality of Ivanovka, Uryup River, Siberia. This bone bed material, circa 375 million years in age, represents a unique opportunity to fill a gap in our understanding of Late Devonian diversity, biogeography, and vertebrate evolution: Siberia, at the time, was an independent continent, and yet its fauna remains virtually unknown in comparison with the other paleocontinents, Euramerica and Gondwana. Using synchrotron microtomographic scanning, a non-destructive technique that has never, to our knowledge, been applied to bone bed material, we obtained 3D image stacks that were then modelled to yield triangle meshes representing the bones in three dimensions. These meshes could then be identified, described, and interpreted. Many of the discovered bones belong to the poorly known genus Megistolepis Obruchev 1955, potentially allowing a radical increase in knowledge regarding this taxon. Other material includes lungfish and possible fragments of limbed tetrapods, though the evidence of the latter is scarce. A discussion of the advantages and disadvantages of synchrotron microtomography for the study of bone bed material concludes the paper. 

Place, publisher, year, edition, pages
2016. , 49 p.
Keyword [en]
Siberia, Late Devonian, Megistolepis, paleontology, microtomography, vertebrates, synchrotron, stem tetrapods, fossil
National Category
Evolutionary Biology
Identifiers
URN: urn:nbn:se:uu:diva-281633OAI: oai:DiVA.org:uu-281633DiVA: diva2:914742
Educational program
Master Programme in Biology
Supervisors
Examiners
Available from: 2016-09-14 Created: 2016-03-25 Last updated: 2016-09-14Bibliographically approved

Open Access in DiVA

fulltext(21213 kB)21 downloads
File information
File name FULLTEXT01.pdfFile size 21213 kBChecksum SHA-512
5e25f9e05c64fff6c3377a61d1034cdd52d4c2d6ee5c0ec5f71e80f04e1c32656ac6309b10990f5ed385d7978b997ee5bdf0c6c88253227870c221fee0789971
Type fulltextMimetype application/pdf

By organisation
Biology Education Centre
Evolutionary Biology

Search outside of DiVA

GoogleGoogle Scholar
Total: 21 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

Total: 6 hits
ReferencesLink to record
Permanent link

Direct link