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dc.contributor.author
LeBlanc, Aaron R. H.
dc.contributor.author
Brink, Kristin S.
dc.contributor.author
Whitney, Megan R.
dc.contributor.author
Abdala, Nestor Fernando
dc.contributor.author
Reisz, Robert R.
dc.date.available
2019-10-17T19:25:10Z
dc.date.issued
2018-11
dc.identifier.citation
LeBlanc, Aaron R. H.; Brink, Kristin S.; Whitney, Megan R.; Abdala, Nestor Fernando; Reisz, Robert R.; Dental ontogeny in extinct synapsids reveals a complex evolutionary history of the mammalian tooth attachment system; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 285; 1890; 11-2018; 1-10
dc.identifier.issn
0962-8452
dc.identifier.uri
http://hdl.handle.net/11336/86179
dc.description.abstract
The mammalian dentition is uniquely characterized by a combination of precise occlusion, permanent adult teeth and a unique tooth attachment system. Unlike the ankylosed teeth in most reptiles, mammal teeth are supported by a ligamentous tissue that suspends each tooth in its socket, providing flexible and compliant tooth attachment that prolongs the life of each tooth and maintains occlusal relationships. Here we investigate dental ontogeny through histological examination of a wide range of extinct synapsid lineages to assess whether the ligamentous tooth attachment system is unique to mammals and to determine how it evolved. This study shows for the first time that the ligamentous tooth attachment system is not unique to crown mammals within Synapsida, having arisen in several non-mammalian therapsid clades as a result of neoteny and progenesis in dental ontogeny. Mammalian tooth attachment is here re-interpreted as a paedomorphic condition relative to the ancestral synapsid form of tooth attachment.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
The Royal Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
PELYCOSAUR
dc.subject
THERAPSID
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DENTAL HISTOLOGY
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PAEDOMORPHOSIS
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Dental ontogeny in extinct synapsids reveals a complex evolutionary history of the mammalian tooth attachment system
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-16T19:13:35Z
dc.identifier.eissn
1471-2954
dc.journal.volume
285
dc.journal.number
1890
dc.journal.pagination
1-10
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: LeBlanc, Aaron R. H.. University of Toronto; Canadá
dc.description.fil
Fil: Brink, Kristin S.. University of Toronto; Canadá
dc.description.fil
Fil: Whitney, Megan R.. University of Washington; Estados Unidos
dc.description.fil
Fil: Abdala, Nestor Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
dc.description.fil
Fil: Reisz, Robert R.. University of Toronto; Canadá
dc.journal.title
Proceedings of the Royal Society of London. Series B: Biological Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1098/rspb.2018.1792
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rspb.2018.1792
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