Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction
There are several hypotheses on the origin and evolution of the earliest Danian planktonic foraminifera. Most experts suggest that they descended from a few opportunist planktonic foraminifera species, mainly of the genera Guembelitria and Hedbergella, which are usually considered to be survivors of...
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ftunivzaraaneto:oai:zaguan.unizar.es:133210 2024-09-15T18:30:46+00:00 Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction Arenillas, Ignacio Arz, José A. 2017 application/pdf http://zaguan.unizar.es/record/133210 https://doi.org/10.1080/08912963.2015.1119133 eng eng info:eu-repo/grantAgreement/ES/DGA/E05 info:eu-repo/grantAgreement/ES/MINECO/CGL2011-229121 info:eu-repo/grantAgreement/ES/MINECO-FEDER/CGL2011-23077 info:eu-repo/grantAgreement/ES/UZ/UZ2015-CIE-02 http://zaguan.unizar.es/record/133210 doi:10.1080/08912963.2015.1119133 by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 2017 ftunivzaraaneto https://doi.org/10.1080/08912963.2015.1119133 2024-08-05T14:07:10Z There are several hypotheses on the origin and evolution of the earliest Danian planktonic foraminifera. Most experts suggest that they descended from a few opportunist planktonic foraminifera species, mainly of the genera Guembelitria and Hedbergella, which are usually considered to be survivors of the Cretaceous/Paleogene (K/Pg) boundary mass extinction. Nevertheless, early Danian specimens of Guembelitria and Hedbergella remained morphologically well separated from the associated parvularugoglobigerinids (i.e. Parvularugoglobigerina and Palaeoglobigerina), the first trochospiral planktonic foraminifera appearing after the K/Pg boundary event. The most likely alternative is a benthic origin for the parvularugoglobigerinids, which would be consistent with molecular phylogenetic studies that have suggested several episodes of benthic-planktonic transitions in the evolutionary history of planktonic foraminifera. A review of material from the El Kef section and other Tunisian sections supports the previous hypothesis that the buliminid genus Caucasina is the ancestor of the first parvularugoglobigerinids (i.e. Parvularugoglobigerina longiapertura and Palaeoglobigerina alticonusa), on the basis of similarities in test and apertural morphologies and wall texture. The intermediate morphotypes between caucasinids and parvularugoglobigerinids, which appeared approximately 3–5 kyr after the K/Pg boundary, are assigned to Pseudocaucasina antecessor gen. nov. sp. nov. Article in Journal/Newspaper Planktonic foraminifera Digital Repository of University of Zaragoza (ZAGUAN) Historical Biology 29 1 25 42 |
institution |
Open Polar |
collection |
Digital Repository of University of Zaragoza (ZAGUAN) |
op_collection_id |
ftunivzaraaneto |
language |
English |
description |
There are several hypotheses on the origin and evolution of the earliest Danian planktonic foraminifera. Most experts suggest that they descended from a few opportunist planktonic foraminifera species, mainly of the genera Guembelitria and Hedbergella, which are usually considered to be survivors of the Cretaceous/Paleogene (K/Pg) boundary mass extinction. Nevertheless, early Danian specimens of Guembelitria and Hedbergella remained morphologically well separated from the associated parvularugoglobigerinids (i.e. Parvularugoglobigerina and Palaeoglobigerina), the first trochospiral planktonic foraminifera appearing after the K/Pg boundary event. The most likely alternative is a benthic origin for the parvularugoglobigerinids, which would be consistent with molecular phylogenetic studies that have suggested several episodes of benthic-planktonic transitions in the evolutionary history of planktonic foraminifera. A review of material from the El Kef section and other Tunisian sections supports the previous hypothesis that the buliminid genus Caucasina is the ancestor of the first parvularugoglobigerinids (i.e. Parvularugoglobigerina longiapertura and Palaeoglobigerina alticonusa), on the basis of similarities in test and apertural morphologies and wall texture. The intermediate morphotypes between caucasinids and parvularugoglobigerinids, which appeared approximately 3–5 kyr after the K/Pg boundary, are assigned to Pseudocaucasina antecessor gen. nov. sp. nov. |
format |
Article in Journal/Newspaper |
author |
Arenillas, Ignacio Arz, José A. |
spellingShingle |
Arenillas, Ignacio Arz, José A. Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction |
author_facet |
Arenillas, Ignacio Arz, José A. |
author_sort |
Arenillas, Ignacio |
title |
Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction |
title_short |
Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction |
title_full |
Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction |
title_fullStr |
Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction |
title_full_unstemmed |
Benthic origin and earliest evolution of the first planktonic foraminifera after the Cretaceous/Palaeogene boundary mass extinction |
title_sort |
benthic origin and earliest evolution of the first planktonic foraminifera after the cretaceous/palaeogene boundary mass extinction |
publishDate |
2017 |
url |
http://zaguan.unizar.es/record/133210 https://doi.org/10.1080/08912963.2015.1119133 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
info:eu-repo/grantAgreement/ES/DGA/E05 info:eu-repo/grantAgreement/ES/MINECO/CGL2011-229121 info:eu-repo/grantAgreement/ES/MINECO-FEDER/CGL2011-23077 info:eu-repo/grantAgreement/ES/UZ/UZ2015-CIE-02 http://zaguan.unizar.es/record/133210 doi:10.1080/08912963.2015.1119133 |
op_rights |
by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ |
op_doi |
https://doi.org/10.1080/08912963.2015.1119133 |
container_title |
Historical Biology |
container_volume |
29 |
container_issue |
1 |
container_start_page |
25 |
op_container_end_page |
42 |
_version_ |
1810472281695059968 |