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dc.contributor.advisorAnderson, Jason S
dc.contributor.authorPardo, Jason Daniel
dc.date.accessioned2014-10-07T15:49:13Z
dc.date.available2014-11-17T08:00:52Z
dc.date.issued2014-10-07
dc.date.submitted2014en
dc.identifier.citationPardo, J. D. (2014). Morphology, Ontogeny, and Phylogenetic Relationships of the Permo-Carboniferous tetrapod Brachydectes newberryi from the Council Grove Group, Nebraska, USA (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/27009en_US
dc.identifier.urihttp://hdl.handle.net/11023/1914
dc.description.abstractLysorophia is a poorly-understood group of fossil tetrapods known from the Late Carboniferous and Early Permian of North America. Some prior workers have noted similarities between lysorophians and modern amphibians, suggesting that lissamphibians may have evolved from lysorophian-like ancestors. I used high resolution x-ray micro-computed tomography (HR-XCT) to study skulls of the lysorophian Brachydectes newberryi from the Early Permian of Kansas and Nebraska, USA. I present a detailed description of the skeletal morphology of these skulls, including fine structure of the braincase. With reference to the skeletal morphology described here, I present a list of new, phylogenetically-informative characters from the braincase and incorporate these into phylogenetic analysis of early tetrapods. Lysorophians are found to be microsaurs, a diverse group of early tetrapods. The data presented here suggest that lysorophians and microsaurs may be early reptiles and thus not relevant to the discussion of lissamphibian origins.en_US
dc.language.isoeng
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectPaleontology
dc.subject.classificationPaleontologyen_US
dc.subject.classificationPhylogenetic Analysisen_US
dc.subject.classificationLissamphibiaen_US
dc.subject.classificationLepospondylien_US
dc.subject.classificationCarboniferousen_US
dc.subject.classificationPermianen_US
dc.titleMorphology, Ontogeny, and Phylogenetic Relationships of the Permo-Carboniferous tetrapod Brachydectes newberryi from the Council Grove Group, Nebraska, USA
dc.typemaster thesis
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/27009
thesis.degree.nameMaster of Science
thesis.degree.nameMS
thesis.degree.nameMSc
thesis.degree.disciplineBiological Sciences
thesis.degree.grantorUniversity of Calgary
atmire.migration.oldid2735
dc.publisher.placeCalgaryen


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