Tempo and Mode

Fossil records generally inform paleobiologists about extinct taxa and rates of evolution measured at the scale of millions of years. Good records that are densely sampled through time can reveal species level details such as longevity in local sections. Yet fossil data normally do not address detai...

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Autores: Kimura, Yuri|||0000-0002-7621-9901, Flynn, Lawrence J.|||0000-0001-9795-5521, Jacobs, Louis L.|||0000-0002-7735-3678
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:272250
Acceso en línea:https://ddd.uab.cat/record/272250
https://dx.doi.org/urn:doi:10.3389/fevo.2021.642814
Access Level:acceso abierto
Palabra clave:Speciation
Evolution
Murinae
Miocene
Siwaliks
Morphology
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spelling Tempo and ModeEvidence on a Protracted Split From a Dense Fossil RecordKimura, Yuri|||0000-0002-7621-9901Flynn, Lawrence J.|||0000-0001-9795-5521Jacobs, Louis L.|||0000-0002-7735-3678SpeciationEvolutionMurinaeMioceneSiwaliksMorphologyFossil records generally inform paleobiologists about extinct taxa and rates of evolution measured at the scale of millions of years. Good records that are densely sampled through time can reveal species level details such as longevity in local sections. Yet fossil data normally do not address details of lineage microevolution because the density through time of lineage sampling is insufficient to perceive patterns at a precision finer than 106 years in most cases. This study concerns details of a splitting event in the evolution of murine rodents, an event for which multiple fossil samples dated to a precision of 105 years fortuitously document the tempo and mode of origin of sister species, the stems of two extant tribes of mice. Evolution of early Murinae in the northern part of the biogeographically restricted Indian subcontinent between 11.6 and 10.5 Ma involved cladogenesis of two crown taxa, the extant tribes Murini and Arvicanthini. Large samples of fossil rodent teeth document their divergence from a common morphological pool. Definitive basal Murini and Arvicanthini at 10.5 Ma are similar in size and differ by subtle features of the dentition. Those features occur sporadically in the common pool of older fossil teeth at 11.2, 11.4, and 11.6 Ma as inconsistent polymorphisms. Interpreted as a single lineage in the 11.6-11.2 Ma interval, variability of this abundant murine incorporated the roots of the two crown tribes. The pattern through time suggests morphological stasis for several hundred thousand years prior to splitting. This special case informs us on one example of evolution and shows that the tempo of splitting evolution in some cases may be measured in hundreds of thousands of years, followed by stasis once daughter species have differentiated morphologically. 22021-01-0120212021-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/272250https://dx.doi.org/urn:doi:10.3389/fevo.2021.642814reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2722502026-06-06T12:50:31Z
dc.title.none.fl_str_mv Tempo and Mode
Evidence on a Protracted Split From a Dense Fossil Record
title Tempo and Mode
spellingShingle Tempo and Mode
Kimura, Yuri|||0000-0002-7621-9901
Speciation
Evolution
Murinae
Miocene
Siwaliks
Morphology
title_short Tempo and Mode
title_full Tempo and Mode
title_fullStr Tempo and Mode
title_full_unstemmed Tempo and Mode
title_sort Tempo and Mode
dc.creator.none.fl_str_mv Kimura, Yuri|||0000-0002-7621-9901
Flynn, Lawrence J.|||0000-0001-9795-5521
Jacobs, Louis L.|||0000-0002-7735-3678
author Kimura, Yuri|||0000-0002-7621-9901
author_facet Kimura, Yuri|||0000-0002-7621-9901
Flynn, Lawrence J.|||0000-0001-9795-5521
Jacobs, Louis L.|||0000-0002-7735-3678
author_role author
author2 Flynn, Lawrence J.|||0000-0001-9795-5521
Jacobs, Louis L.|||0000-0002-7735-3678
author2_role author
author
dc.subject.none.fl_str_mv Speciation
Evolution
Murinae
Miocene
Siwaliks
Morphology
topic Speciation
Evolution
Murinae
Miocene
Siwaliks
Morphology
description Fossil records generally inform paleobiologists about extinct taxa and rates of evolution measured at the scale of millions of years. Good records that are densely sampled through time can reveal species level details such as longevity in local sections. Yet fossil data normally do not address details of lineage microevolution because the density through time of lineage sampling is insufficient to perceive patterns at a precision finer than 106 years in most cases. This study concerns details of a splitting event in the evolution of murine rodents, an event for which multiple fossil samples dated to a precision of 105 years fortuitously document the tempo and mode of origin of sister species, the stems of two extant tribes of mice. Evolution of early Murinae in the northern part of the biogeographically restricted Indian subcontinent between 11.6 and 10.5 Ma involved cladogenesis of two crown taxa, the extant tribes Murini and Arvicanthini. Large samples of fossil rodent teeth document their divergence from a common morphological pool. Definitive basal Murini and Arvicanthini at 10.5 Ma are similar in size and differ by subtle features of the dentition. Those features occur sporadically in the common pool of older fossil teeth at 11.2, 11.4, and 11.6 Ma as inconsistent polymorphisms. Interpreted as a single lineage in the 11.6-11.2 Ma interval, variability of this abundant murine incorporated the roots of the two crown tribes. The pattern through time suggests morphological stasis for several hundred thousand years prior to splitting. This special case informs us on one example of evolution and shows that the tempo of splitting evolution in some cases may be measured in hundreds of thousands of years, followed by stasis once daughter species have differentiated morphologically.
publishDate 2021
dc.date.none.fl_str_mv 2
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
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https://dx.doi.org/urn:doi:10.3389/fevo.2021.642814
url https://ddd.uab.cat/record/272250
https://dx.doi.org/urn:doi:10.3389/fevo.2021.642814
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
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