Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality

Autores
Bennett, C. Verity; Upchurch, Paul; Goin, Francisco Javier; Goswami, Anjadi
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Despite a global fossil record, Metatheria are now largely restricted to Australasia and South America. Most metatherian paleodiversity studies to date are limited to particular subclades, time intervals, and/or regions, and few consider uneven sampling. Here, we present a comprehensive new data set on metatherian fossil occurrences (Barremian to end Pliocene). These data are analyzed using standard rarefaction and shareholder quorum subsampling (including a new protocol for handling Lagerstätte-like localities). Global metatherian diversity was lowest during the Cretaceous, and increased sharply in the Paleocene, when the South American record begins. Global and South American diversity rose in the early Eocene then fell in the late Eocene, in contrast to the North American pattern. In the Oligocene, diversity declined in the Americas, but this was more than offset by Oligocene radiations in Australia. Diversity continued to decrease in Laurasia, with final representatives in North America (excluding the later entry of Didelphis virginiana) and Europe in the early Miocene, and Asia in the middle Miocene. Global metatherian diversity appears to have peaked in the early Miocene, especially in Australia. Following a trough in the late Miocene, the Pliocene saw another increase in global diversity. By this time, metatherian biogeographic distribution had essentially contracted to that of today. Comparison of the raw and sampling-corrected diversity estimates, coupled with evaluation of "coverage" and number of prolific sites, demonstrates that the metatherian fossil record is spatially and temporally extremely patchy. Therefore, assessments of macroevolutionary patterns based on the raw fossil record (as in most previous studies) are inadvisable.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Metatheria
Mammalia
Cenozoic
World record
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/97603

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spelling Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record qualityBennett, C. VerityUpchurch, PaulGoin, Francisco JavierGoswami, AnjadiCiencias NaturalesMetatheriaMammaliaCenozoicWorld recordDespite a global fossil record, Metatheria are now largely restricted to Australasia and South America. Most metatherian paleodiversity studies to date are limited to particular subclades, time intervals, and/or regions, and few consider uneven sampling. Here, we present a comprehensive new data set on metatherian fossil occurrences (Barremian to end Pliocene). These data are analyzed using standard rarefaction and shareholder quorum subsampling (including a new protocol for handling Lagerstätte-like localities). Global metatherian diversity was lowest during the Cretaceous, and increased sharply in the Paleocene, when the South American record begins. Global and South American diversity rose in the early Eocene then fell in the late Eocene, in contrast to the North American pattern. In the Oligocene, diversity declined in the Americas, but this was more than offset by Oligocene radiations in Australia. Diversity continued to decrease in Laurasia, with final representatives in North America (excluding the later entry of <i>Didelphis virginiana</i>) and Europe in the early Miocene, and Asia in the middle Miocene. Global metatherian diversity appears to have peaked in the early Miocene, especially in Australia. Following a trough in the late Miocene, the Pliocene saw another increase in global diversity. By this time, metatherian biogeographic distribution had essentially contracted to that of today. Comparison of the raw and sampling-corrected diversity estimates, coupled with evaluation of "coverage" and number of prolific sites, demonstrates that the metatherian fossil record is spatially and temporally extremely patchy. Therefore, assessments of macroevolutionary patterns based on the raw fossil record (as in most previous studies) are inadvisable.Facultad de Ciencias Naturales y Museo2018-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf171-198http://sedici.unlp.edu.ar/handle/10915/97603enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/94590info:eu-repo/semantics/altIdentifier/url/https://bit.ly/2FNE3zCinfo:eu-repo/semantics/altIdentifier/issn/0094-8373info:eu-repo/semantics/altIdentifier/doi/10.1017/pab.2017.34info:eu-repo/semantics/altIdentifier/hdl/11336/94590info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:52:31Zoai:sedici.unlp.edu.ar:10915/97603Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:52:31.59SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
title Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
spellingShingle Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
Bennett, C. Verity
Ciencias Naturales
Metatheria
Mammalia
Cenozoic
World record
title_short Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
title_full Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
title_fullStr Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
title_full_unstemmed Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
title_sort Deep time diversity of metatherian mammals: implications for evolutionary history and fossil-record quality
dc.creator.none.fl_str_mv Bennett, C. Verity
Upchurch, Paul
Goin, Francisco Javier
Goswami, Anjadi
author Bennett, C. Verity
author_facet Bennett, C. Verity
Upchurch, Paul
Goin, Francisco Javier
Goswami, Anjadi
author_role author
author2 Upchurch, Paul
Goin, Francisco Javier
Goswami, Anjadi
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Metatheria
Mammalia
Cenozoic
World record
topic Ciencias Naturales
Metatheria
Mammalia
Cenozoic
World record
dc.description.none.fl_txt_mv Despite a global fossil record, Metatheria are now largely restricted to Australasia and South America. Most metatherian paleodiversity studies to date are limited to particular subclades, time intervals, and/or regions, and few consider uneven sampling. Here, we present a comprehensive new data set on metatherian fossil occurrences (Barremian to end Pliocene). These data are analyzed using standard rarefaction and shareholder quorum subsampling (including a new protocol for handling Lagerstätte-like localities). Global metatherian diversity was lowest during the Cretaceous, and increased sharply in the Paleocene, when the South American record begins. Global and South American diversity rose in the early Eocene then fell in the late Eocene, in contrast to the North American pattern. In the Oligocene, diversity declined in the Americas, but this was more than offset by Oligocene radiations in Australia. Diversity continued to decrease in Laurasia, with final representatives in North America (excluding the later entry of <i>Didelphis virginiana</i>) and Europe in the early Miocene, and Asia in the middle Miocene. Global metatherian diversity appears to have peaked in the early Miocene, especially in Australia. Following a trough in the late Miocene, the Pliocene saw another increase in global diversity. By this time, metatherian biogeographic distribution had essentially contracted to that of today. Comparison of the raw and sampling-corrected diversity estimates, coupled with evaluation of "coverage" and number of prolific sites, demonstrates that the metatherian fossil record is spatially and temporally extremely patchy. Therefore, assessments of macroevolutionary patterns based on the raw fossil record (as in most previous studies) are inadvisable.
Facultad de Ciencias Naturales y Museo
description Despite a global fossil record, Metatheria are now largely restricted to Australasia and South America. Most metatherian paleodiversity studies to date are limited to particular subclades, time intervals, and/or regions, and few consider uneven sampling. Here, we present a comprehensive new data set on metatherian fossil occurrences (Barremian to end Pliocene). These data are analyzed using standard rarefaction and shareholder quorum subsampling (including a new protocol for handling Lagerstätte-like localities). Global metatherian diversity was lowest during the Cretaceous, and increased sharply in the Paleocene, when the South American record begins. Global and South American diversity rose in the early Eocene then fell in the late Eocene, in contrast to the North American pattern. In the Oligocene, diversity declined in the Americas, but this was more than offset by Oligocene radiations in Australia. Diversity continued to decrease in Laurasia, with final representatives in North America (excluding the later entry of <i>Didelphis virginiana</i>) and Europe in the early Miocene, and Asia in the middle Miocene. Global metatherian diversity appears to have peaked in the early Miocene, especially in Australia. Following a trough in the late Miocene, the Pliocene saw another increase in global diversity. By this time, metatherian biogeographic distribution had essentially contracted to that of today. Comparison of the raw and sampling-corrected diversity estimates, coupled with evaluation of "coverage" and number of prolific sites, demonstrates that the metatherian fossil record is spatially and temporally extremely patchy. Therefore, assessments of macroevolutionary patterns based on the raw fossil record (as in most previous studies) are inadvisable.
publishDate 2018
dc.date.none.fl_str_mv 2018-05
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info:eu-repo/semantics/altIdentifier/issn/0094-8373
info:eu-repo/semantics/altIdentifier/doi/10.1017/pab.2017.34
info:eu-repo/semantics/altIdentifier/hdl/11336/94590
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