The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade

Autores
Wilf, Peter; Iglesias, Ari; Gandolfo, Maria Alejandra
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Premise: The spurge family Euphorbiaceae is prominent in tropical rainforests worldwide,particularly in Asia. There is little consensus on the biogeographic origins of the family or its principal lineages. No confirmed spurge macrofossils have come from Gondwana. 25Methods: We describe the first Gondwanan macrofossils of Euphorbiaceae, represented by two infructescences and associated peltate leaves from the early Eocene (52 Ma) Laguna del Hunco site in Chubut, Argentina. Results: The infructescences are panicles bearing tiny, pedicellate, spineless capsular fruits with two locules, two axile lenticular seeds, and two unbranched plumose stigmas. The fossils? character combination only occurs today in some species of the Macaranga-Mallotus clade (MMC; Euphorbiaceae), a widespread Old-World understory group often thought to have tropical Asian origins. The associated leaves are consistent with extant Macaranga. Conclusions: The new fossils are the oldest known for the MMC, demonstrating its Gondwanan history and marking its divergence by at least 52 Ma. This discovery makes an Asian origin of the MMC unlikely because immense oceanic distances separated Asia and South America at Ma. The only other MMC reproductive fossils so far known are also from the Southern Hemisphere (early Miocene, southern New Zealand), far from the Asian tropics. The MMC, along with many other Gondwanan survivors, most likely entered Asia during the Neogene Sahul-Sunda collision. Our discovery adds to a substantial series of well-dated, well-preserved fossils from one undersampled region, Patagonia, that have changed our understanding of plant biogeographic history.
Fil: Wilf, Peter. State University of Pennsylvania; Estados Unidos
Fil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Gandolfo, Maria Alejandra. Cornell University; Estados Unidos. Museo Paleontológico Egidio Feruglio; Argentina
Materia
Biogeography
euphorbiaceae
Gondwana
Mallotus-Macaranga Clade
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:11336/255747
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus cladeWilf, PeterIglesias, AriGandolfo, Maria AlejandraBiogeographyeuphorbiaceaeGondwanaMallotus-Macaranga Cladehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Premise: The spurge family Euphorbiaceae is prominent in tropical rainforests worldwide,particularly in Asia. There is little consensus on the biogeographic origins of the family or its principal lineages. No confirmed spurge macrofossils have come from Gondwana. 25Methods: We describe the first Gondwanan macrofossils of Euphorbiaceae, represented by two infructescences and associated peltate leaves from the early Eocene (52 Ma) Laguna del Hunco site in Chubut, Argentina. Results: The infructescences are panicles bearing tiny, pedicellate, spineless capsular fruits with two locules, two axile lenticular seeds, and two unbranched plumose stigmas. The fossils? character combination only occurs today in some species of the Macaranga-Mallotus clade (MMC; Euphorbiaceae), a widespread Old-World understory group often thought to have tropical Asian origins. The associated leaves are consistent with extant Macaranga. Conclusions: The new fossils are the oldest known for the MMC, demonstrating its Gondwanan history and marking its divergence by at least 52 Ma. This discovery makes an Asian origin of the MMC unlikely because immense oceanic distances separated Asia and South America at Ma. The only other MMC reproductive fossils so far known are also from the Southern Hemisphere (early Miocene, southern New Zealand), far from the Asian tropics. The MMC, along with many other Gondwanan survivors, most likely entered Asia during the Neogene Sahul-Sunda collision. Our discovery adds to a substantial series of well-dated, well-preserved fossils from one undersampled region, Patagonia, that have changed our understanding of plant biogeographic history.Fil: Wilf, Peter. State University of Pennsylvania; Estados UnidosFil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Gandolfo, Maria Alejandra. Cornell University; Estados Unidos. Museo Paleontológico Egidio Feruglio; ArgentinaBotanical Society of America2023-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/255747Wilf, Peter; Iglesias, Ari; Gandolfo, Maria Alejandra; The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade; Botanical Society of America; American Journal of Botany; 110; 5; 3-2023; 1-200002-9122CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://bsapubs.onlinelibrary.wiley.com/doi/10.1002/ajb2.16169info:eu-repo/semantics/altIdentifier/doi/10.1002/ajb2.16169info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:20:12Zoai:ri.conicet.gov.ar:11336/255747instacron: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:34982025-10-22 11:20:12.475CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
title The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
spellingShingle The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
Wilf, Peter
Biogeography
euphorbiaceae
Gondwana
Mallotus-Macaranga Clade
title_short The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
title_full The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
title_fullStr The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
title_full_unstemmed The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
title_sort The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade
dc.creator.none.fl_str_mv Wilf, Peter
Iglesias, Ari
Gandolfo, Maria Alejandra
author Wilf, Peter
author_facet Wilf, Peter
Iglesias, Ari
Gandolfo, Maria Alejandra
author_role author
author2 Iglesias, Ari
Gandolfo, Maria Alejandra
author2_role author
author
dc.subject.none.fl_str_mv Biogeography
euphorbiaceae
Gondwana
Mallotus-Macaranga Clade
topic Biogeography
euphorbiaceae
Gondwana
Mallotus-Macaranga Clade
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Premise: The spurge family Euphorbiaceae is prominent in tropical rainforests worldwide,particularly in Asia. There is little consensus on the biogeographic origins of the family or its principal lineages. No confirmed spurge macrofossils have come from Gondwana. 25Methods: We describe the first Gondwanan macrofossils of Euphorbiaceae, represented by two infructescences and associated peltate leaves from the early Eocene (52 Ma) Laguna del Hunco site in Chubut, Argentina. Results: The infructescences are panicles bearing tiny, pedicellate, spineless capsular fruits with two locules, two axile lenticular seeds, and two unbranched plumose stigmas. The fossils? character combination only occurs today in some species of the Macaranga-Mallotus clade (MMC; Euphorbiaceae), a widespread Old-World understory group often thought to have tropical Asian origins. The associated leaves are consistent with extant Macaranga. Conclusions: The new fossils are the oldest known for the MMC, demonstrating its Gondwanan history and marking its divergence by at least 52 Ma. This discovery makes an Asian origin of the MMC unlikely because immense oceanic distances separated Asia and South America at Ma. The only other MMC reproductive fossils so far known are also from the Southern Hemisphere (early Miocene, southern New Zealand), far from the Asian tropics. The MMC, along with many other Gondwanan survivors, most likely entered Asia during the Neogene Sahul-Sunda collision. Our discovery adds to a substantial series of well-dated, well-preserved fossils from one undersampled region, Patagonia, that have changed our understanding of plant biogeographic history.
Fil: Wilf, Peter. State University of Pennsylvania; Estados Unidos
Fil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Gandolfo, Maria Alejandra. Cornell University; Estados Unidos. Museo Paleontológico Egidio Feruglio; Argentina
description Premise: The spurge family Euphorbiaceae is prominent in tropical rainforests worldwide,particularly in Asia. There is little consensus on the biogeographic origins of the family or its principal lineages. No confirmed spurge macrofossils have come from Gondwana. 25Methods: We describe the first Gondwanan macrofossils of Euphorbiaceae, represented by two infructescences and associated peltate leaves from the early Eocene (52 Ma) Laguna del Hunco site in Chubut, Argentina. Results: The infructescences are panicles bearing tiny, pedicellate, spineless capsular fruits with two locules, two axile lenticular seeds, and two unbranched plumose stigmas. The fossils? character combination only occurs today in some species of the Macaranga-Mallotus clade (MMC; Euphorbiaceae), a widespread Old-World understory group often thought to have tropical Asian origins. The associated leaves are consistent with extant Macaranga. Conclusions: The new fossils are the oldest known for the MMC, demonstrating its Gondwanan history and marking its divergence by at least 52 Ma. This discovery makes an Asian origin of the MMC unlikely because immense oceanic distances separated Asia and South America at Ma. The only other MMC reproductive fossils so far known are also from the Southern Hemisphere (early Miocene, southern New Zealand), far from the Asian tropics. The MMC, along with many other Gondwanan survivors, most likely entered Asia during the Neogene Sahul-Sunda collision. Our discovery adds to a substantial series of well-dated, well-preserved fossils from one undersampled region, Patagonia, that have changed our understanding of plant biogeographic history.
publishDate 2023
dc.date.none.fl_str_mv 2023-03
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/11336/255747
Wilf, Peter; Iglesias, Ari; Gandolfo, Maria Alejandra; The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade; Botanical Society of America; American Journal of Botany; 110; 5; 3-2023; 1-20
0002-9122
CONICET Digital
CONICET
url http://hdl.handle.net/11336/255747
identifier_str_mv Wilf, Peter; Iglesias, Ari; Gandolfo, Maria Alejandra; The first Gondwanan Euphorbiaceae fossils reset the biogeographic history of the Macaranga-Mallotus clade; Botanical Society of America; American Journal of Botany; 110; 5; 3-2023; 1-20
0002-9122
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://bsapubs.onlinelibrary.wiley.com/doi/10.1002/ajb2.16169
info:eu-repo/semantics/altIdentifier/doi/10.1002/ajb2.16169
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 Botanical Society of America
publisher.none.fl_str_mv Botanical Society of America
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 12.982451

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