Neurosensory anatomy and function in Seymouria

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dc.contributor.authorBazzana‐Adams, KDen_AU
dc.contributor.authorEvans, DCen_AU
dc.contributor.authorBevitt, JJen_AU
dc.contributor.authorReisz, RRen_AU
dc.date.accessioned2024-09-19T06:18:26Zen_AU
dc.date.available2024-09-19T06:18:26Zen_AU
dc.date.issued2023-03-08en_AU
dc.date.statistics2024-09-13en_AU
dc.description.abstractSeymouria is among the best‐known stem amniotes and holds an important phylogenetic position for discussions of amniote evolution. Previous work has focused primarily on the osteology of Seymouria, with recent interest turning to the application of computed tomography (CT) to study the internal features. We utilized neutron CT to reconstruct the first virtual cranial endocast and the first complete otic endocasts of Seymouria, revealing previously unrecognized details of its palaeoneuroanatomy. The brain and inner ear of Seymouria are largely plesiomorphic relative to later‐diverging crown amniotes, showing no indication of increased encephalization or braincase ossification. Our results also clarify the plesiomorphic condition for carotid artery morphology in amniotes, with Seymouria showing a similar condition to basal members of both the synapsid and sauropsid lineages. The reconstructed neuroanatomy also indicates that Seymouria did not possess any particular neuroanatomical specializations, despite the probable presence of an impedance matching hearing system. © 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium,provided the original work is properly cited.© 2023 The Authors.en_AU
dc.description.sponsorshipThe authors would like to thank Kevin Seymour of the ROM and the staff of the OMNH for specimen access. The authors would like to thank the anonymous reviewers of a previous version of this manuscript whose feedback greatly improved the overall work. This research was supported by NSERC grants to D. C. E. (RGPIN-2018-06788) and R. R. R. (RGPIN-2020-04959) and an NSERC scholarship to K. D. B.-A.en_AU
dc.format.mediumPrinten_AU
dc.identifier.articlenumbere21577en_AU
dc.identifier.citationBazzana-Adams, K. D., Evans, D. C., Bevitt, J. J., & Reisz, R. R. (2023). Neurosensory anatomy and function in Seymouria. Journal of Morphology, 284(5), e21577. doi:0.1002/jmor.21577en_AU
dc.identifier.issn0362-2525en_AU
dc.identifier.issn1097-4687en_AU
dc.identifier.issue5en_AU
dc.identifier.journaltitleJournal of Morphologyen_AU
dc.identifier.urihttp://dx.doi.org/10.1002/jmor.21577en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15686en_AU
dc.identifier.volume284en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherWileyen_AU
dc.subjectEvolutionen_AU
dc.subjectTomographyen_AU
dc.subjectCarotid arteriesen_AU
dc.subjectAuditory organsen_AU
dc.subjectAquatic ecosystemsen_AU
dc.subjectBrainen_AU
dc.subjectCerebrumen_AU
dc.titleNeurosensory anatomy and function in Seymouriaen_AU
dc.typeJournal Articleen_AU
dcterms.dateAccepted2023-03-08en_AU
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