The first 40 million years of planktonic foraminifera
We provide a biochronology of Jurassic planktonic foramininfera, using first order linkage to ammonite and nannofossil stratigraphy and geochronology. This enigmatic and understudied group of microfossils occurred from middle Toarcian through Tithonian time, from ~180 to ~143 Ma; its origin is unkno...
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ftoslouniv:oai:www.duo.uio.no:10852/93106 2023-05-15T18:00:32+02:00 The first 40 million years of planktonic foraminifera Gradstein, Felix M Waskowska, Anna Glinskikh, Larisa 2022-02-17T19:25:33Z http://hdl.handle.net/10852/93106 http://urn.nb.no/URN:NBN:no-95661 https://doi.org/10.3390/geosciences11020085 EN eng http://urn.nb.no/URN:NBN:no-95661 Gradstein, Felix M Waskowska, Anna Glinskikh, Larisa . The first 40 million years of planktonic foraminifera. Geosciences. 2021, 11(2), 1-25 http://hdl.handle.net/10852/93106 2003075 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geosciences&rft.volume=11&rft.spage=1&rft.date=2021 Geosciences 11 2 https://doi.org/10.3390/geosciences11020085 URN:NBN:no-95661 Fulltext https://www.duo.uio.no/bitstream/handle/10852/93106/1/The%2BFirst%2B40%2BMillion.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 2076-3263 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.3390/geosciences11020085 2022-04-06T22:33:48Z We provide a biochronology of Jurassic planktonic foramininfera, using first order linkage to ammonite and nannofossil stratigraphy and geochronology. This enigmatic and understudied group of microfossils occurred from middle Toarcian through Tithonian time, from ~180 to ~143 Ma; its origin is unknown. There are three genera: Globuligerina, Conoglobigerina and Petaloglobigerina. The genus Globuligerina, with a smooth to pustulose test surface texture appeared in Toarcian (late Early Jurassic) and Conoglobigerina, with a rough reticulate test surface texture in Oxfordian (early Late Jurassic) time. The genus Petaloglobigerina, having a petaloid last whorl with one or more claviform and twisted chambers evolved in early Kimmeridgian time from Globuligerina balakhmatovae. Biochronologic events for Jurassic planktonic foraminifera are most like First Common Appearance or Last Common Appearance events. The very first or very last appearance levels of taxa are not easily sampled and detected. We recognize stratigraphic events from eleven species across four postulated evolutionary lineages, calibrated to Geologic Time Scale 2020. A faunal change, which is not well documented led to the survival of only one taxon, most likely Gobuligerina oxfordiana in the Tithonian. Article in Journal/Newspaper Planktonic foraminifera Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Geosciences 11 2 85 |
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Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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ftoslouniv |
language |
English |
description |
We provide a biochronology of Jurassic planktonic foramininfera, using first order linkage to ammonite and nannofossil stratigraphy and geochronology. This enigmatic and understudied group of microfossils occurred from middle Toarcian through Tithonian time, from ~180 to ~143 Ma; its origin is unknown. There are three genera: Globuligerina, Conoglobigerina and Petaloglobigerina. The genus Globuligerina, with a smooth to pustulose test surface texture appeared in Toarcian (late Early Jurassic) and Conoglobigerina, with a rough reticulate test surface texture in Oxfordian (early Late Jurassic) time. The genus Petaloglobigerina, having a petaloid last whorl with one or more claviform and twisted chambers evolved in early Kimmeridgian time from Globuligerina balakhmatovae. Biochronologic events for Jurassic planktonic foraminifera are most like First Common Appearance or Last Common Appearance events. The very first or very last appearance levels of taxa are not easily sampled and detected. We recognize stratigraphic events from eleven species across four postulated evolutionary lineages, calibrated to Geologic Time Scale 2020. A faunal change, which is not well documented led to the survival of only one taxon, most likely Gobuligerina oxfordiana in the Tithonian. |
format |
Article in Journal/Newspaper |
author |
Gradstein, Felix M Waskowska, Anna Glinskikh, Larisa |
spellingShingle |
Gradstein, Felix M Waskowska, Anna Glinskikh, Larisa The first 40 million years of planktonic foraminifera |
author_facet |
Gradstein, Felix M Waskowska, Anna Glinskikh, Larisa |
author_sort |
Gradstein, Felix M |
title |
The first 40 million years of planktonic foraminifera |
title_short |
The first 40 million years of planktonic foraminifera |
title_full |
The first 40 million years of planktonic foraminifera |
title_fullStr |
The first 40 million years of planktonic foraminifera |
title_full_unstemmed |
The first 40 million years of planktonic foraminifera |
title_sort |
first 40 million years of planktonic foraminifera |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/93106 http://urn.nb.no/URN:NBN:no-95661 https://doi.org/10.3390/geosciences11020085 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
2076-3263 |
op_relation |
http://urn.nb.no/URN:NBN:no-95661 Gradstein, Felix M Waskowska, Anna Glinskikh, Larisa . The first 40 million years of planktonic foraminifera. Geosciences. 2021, 11(2), 1-25 http://hdl.handle.net/10852/93106 2003075 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geosciences&rft.volume=11&rft.spage=1&rft.date=2021 Geosciences 11 2 https://doi.org/10.3390/geosciences11020085 URN:NBN:no-95661 Fulltext https://www.duo.uio.no/bitstream/handle/10852/93106/1/The%2BFirst%2B40%2BMillion.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/geosciences11020085 |
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Geosciences |
container_volume |
11 |
container_issue |
2 |
container_start_page |
85 |
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1766169662195761152 |