Early evidence of molariform hypsodonty in a Triassic stem-mammal

Autores
Melo, Tomaz Panceri; Ribeiro, Ana Maria; Martinelli, Agustín Guillermo; Soares, Marina Bento
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Hypsodonty, the occurrence of high-crowned teeth, is widespread among mammals with diets rich in abrasive material, such as plants or soil, because it increases the durability of dentitions against wear. Hypsodont postcanine teeth evolved independently in multiple mammalian lineages and in the closely related mammaliaforms since the Jurassic period. Here, we report the oldest record, to our knowledge, of hypsodont postcanines in the non-mammaliaform stem-mammal, Menadon besairiei, from the early Late Triassic. The postcanines are long and columnar, with open roots. They were not replaced in older individuals and remained functional after the total wear of the crown enamel. Dental histology suggests that, convergently to hypsodont mammals, wear was compensated by the prolonged growth of each postcanine, resulting in dentine hypsodont teeth most similar to extant xenarthran mammals. These findings highlight the constraints imposed by limited tooth replacement and tooth wear in the evolutionary trajectories of herbivorous mammals and stem-mammals.
Fil: Melo, Tomaz Panceri. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Ribeiro, Ana Maria. Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais; Brasil
Fil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Soares, Marina Bento. Universidade Federal do Rio Grande do Sul; Brasil
Materia
HYPSODONTY
CYNODONTIA
TRIASSIC
MAMMALIA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/123972
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Early evidence of molariform hypsodonty in a Triassic stem-mammalMelo, Tomaz PanceriRibeiro, Ana MariaMartinelli, Agustín GuillermoSoares, Marina BentoHYPSODONTYCYNODONTIATRIASSICMAMMALIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Hypsodonty, the occurrence of high-crowned teeth, is widespread among mammals with diets rich in abrasive material, such as plants or soil, because it increases the durability of dentitions against wear. Hypsodont postcanine teeth evolved independently in multiple mammalian lineages and in the closely related mammaliaforms since the Jurassic period. Here, we report the oldest record, to our knowledge, of hypsodont postcanines in the non-mammaliaform stem-mammal, Menadon besairiei, from the early Late Triassic. The postcanines are long and columnar, with open roots. They were not replaced in older individuals and remained functional after the total wear of the crown enamel. Dental histology suggests that, convergently to hypsodont mammals, wear was compensated by the prolonged growth of each postcanine, resulting in dentine hypsodont teeth most similar to extant xenarthran mammals. These findings highlight the constraints imposed by limited tooth replacement and tooth wear in the evolutionary trajectories of herbivorous mammals and stem-mammals.Fil: Melo, Tomaz Panceri. Universidade Federal do Rio Grande do Sul; BrasilFil: Ribeiro, Ana Maria. Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais; BrasilFil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Soares, Marina Bento. Universidade Federal do Rio Grande do Sul; BrasilNature2019-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/123972Melo, Tomaz Panceri; Ribeiro, Ana Maria; Martinelli, Agustín Guillermo; Soares, Marina Bento; Early evidence of molariform hypsodonty in a Triassic stem-mammal; Nature; Nature Communications; 10; 1; 12-2019; 1-8; 28412041-1723CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41467-019-10719-7info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-019-10719-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:33Zoai:ri.conicet.gov.ar:11336/123972instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:15:34.034CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Early evidence of molariform hypsodonty in a Triassic stem-mammal
title Early evidence of molariform hypsodonty in a Triassic stem-mammal
spellingShingle Early evidence of molariform hypsodonty in a Triassic stem-mammal
Melo, Tomaz Panceri
HYPSODONTY
CYNODONTIA
TRIASSIC
MAMMALIA
title_short Early evidence of molariform hypsodonty in a Triassic stem-mammal
title_full Early evidence of molariform hypsodonty in a Triassic stem-mammal
title_fullStr Early evidence of molariform hypsodonty in a Triassic stem-mammal
title_full_unstemmed Early evidence of molariform hypsodonty in a Triassic stem-mammal
title_sort Early evidence of molariform hypsodonty in a Triassic stem-mammal
dc.creator.none.fl_str_mv Melo, Tomaz Panceri
Ribeiro, Ana Maria
Martinelli, Agustín Guillermo
Soares, Marina Bento
author Melo, Tomaz Panceri
author_facet Melo, Tomaz Panceri
Ribeiro, Ana Maria
Martinelli, Agustín Guillermo
Soares, Marina Bento
author_role author
author2 Ribeiro, Ana Maria
Martinelli, Agustín Guillermo
Soares, Marina Bento
author2_role author
author
author
dc.subject.none.fl_str_mv HYPSODONTY
CYNODONTIA
TRIASSIC
MAMMALIA
topic HYPSODONTY
CYNODONTIA
TRIASSIC
MAMMALIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Hypsodonty, the occurrence of high-crowned teeth, is widespread among mammals with diets rich in abrasive material, such as plants or soil, because it increases the durability of dentitions against wear. Hypsodont postcanine teeth evolved independently in multiple mammalian lineages and in the closely related mammaliaforms since the Jurassic period. Here, we report the oldest record, to our knowledge, of hypsodont postcanines in the non-mammaliaform stem-mammal, Menadon besairiei, from the early Late Triassic. The postcanines are long and columnar, with open roots. They were not replaced in older individuals and remained functional after the total wear of the crown enamel. Dental histology suggests that, convergently to hypsodont mammals, wear was compensated by the prolonged growth of each postcanine, resulting in dentine hypsodont teeth most similar to extant xenarthran mammals. These findings highlight the constraints imposed by limited tooth replacement and tooth wear in the evolutionary trajectories of herbivorous mammals and stem-mammals.
Fil: Melo, Tomaz Panceri. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Ribeiro, Ana Maria. Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais; Brasil
Fil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Soares, Marina Bento. Universidade Federal do Rio Grande do Sul; Brasil
description Hypsodonty, the occurrence of high-crowned teeth, is widespread among mammals with diets rich in abrasive material, such as plants or soil, because it increases the durability of dentitions against wear. Hypsodont postcanine teeth evolved independently in multiple mammalian lineages and in the closely related mammaliaforms since the Jurassic period. Here, we report the oldest record, to our knowledge, of hypsodont postcanines in the non-mammaliaform stem-mammal, Menadon besairiei, from the early Late Triassic. The postcanines are long and columnar, with open roots. They were not replaced in older individuals and remained functional after the total wear of the crown enamel. Dental histology suggests that, convergently to hypsodont mammals, wear was compensated by the prolonged growth of each postcanine, resulting in dentine hypsodont teeth most similar to extant xenarthran mammals. These findings highlight the constraints imposed by limited tooth replacement and tooth wear in the evolutionary trajectories of herbivorous mammals and stem-mammals.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/123972
Melo, Tomaz Panceri; Ribeiro, Ana Maria; Martinelli, Agustín Guillermo; Soares, Marina Bento; Early evidence of molariform hypsodonty in a Triassic stem-mammal; Nature; Nature Communications; 10; 1; 12-2019; 1-8; 2841
2041-1723
CONICET Digital
CONICET
url http://hdl.handle.net/11336/123972
identifier_str_mv Melo, Tomaz Panceri; Ribeiro, Ana Maria; Martinelli, Agustín Guillermo; Soares, Marina Bento; Early evidence of molariform hypsodonty in a Triassic stem-mammal; Nature; Nature Communications; 10; 1; 12-2019; 1-8; 2841
2041-1723
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41467-019-10719-7
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-019-10719-7
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature
publisher.none.fl_str_mv Nature
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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