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The presumed hagfish Myxineidus gononorum from the Upper Carboniferous of Montceau-les-Mines (Saone-et-Loire, France): New data obtained by means of Propagation Phase Contrast X-ray Synchrotron Microtomography
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Evolution and Developmental Biology.
2014 (English)In: Annales de Paléontologie, ISSN 0753-3969, E-ISSN 1778-3666, Vol. 100, no 2, 131-135 p.Article in journal (Refereed) Published
Abstract [en]

The re-examination of the presumed hagfish Myxineidus gononorum from the Carboniferous of Montceaules-Mines by means of propagation phase contrast X-ray synchrotron microtomography confirms the presence of two series of non-mineralized denticles arranged in chevrons in the oral region. It also indicates the presence of possible traces of post-mortem mineralized soft tissues. A peculiar zone of less X ray-absorbing matter around the animal suggests the presence of an enlarged, lamprey-like oral disc. Re-interpreting Myxineidus as a lamprey would be in better agreement with the reputedly fresh-water environment of the Montceau-les-Mines Lagerstatte. 

Place, publisher, year, edition, pages
2014. Vol. 100, no 2, 131-135 p.
Keyword [en]
Vertebrata, Cyclostomi, Myxiniformes, Petromyzontiformes, Carboniferous, Montceau-les-Mines, Palaeoenvironment
National Category
Developmental Biology
Identifiers
URN: urn:nbn:se:uu:diva-229976DOI: 10.1016/j.annpal.2013.12.003ISI: 000338607500005OAI: oai:DiVA.org:uu-229976DiVA: diva2:738636
Available from: 2014-08-18 Created: 2014-08-18 Last updated: 2017-12-05Bibliographically approved

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Sanchez, Sophie

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