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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MDPI AG
2021
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Online Access: | https://doi.org/10.3390/geosciences11020085 https://doaj.org/article/7360b8f98c5943b9bb946e17351cbe2d |
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ftdoajarticles:oai:doaj.org/article:7360b8f98c5943b9bb946e17351cbe2d 2024-01-14T10:10:01+01:00 The First 40 Million Years of Planktonic Foraminifera Felix Gradstein Anna Waskowska Larisa Glinskikh 2021-02-01T00:00:00Z https://doi.org/10.3390/geosciences11020085 https://doaj.org/article/7360b8f98c5943b9bb946e17351cbe2d EN eng MDPI AG https://www.mdpi.com/2076-3263/11/2/85 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences11020085 2076-3263 https://doaj.org/article/7360b8f98c5943b9bb946e17351cbe2d Geosciences, Vol 11, Iss 2, p 85 (2021) planktonic foraminifera Jurassic chronostratigraphy biochronology evolution Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.3390/geosciences11020085 2023-12-17T01:45:56Z 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 Directory of Open Access Journals: DOAJ Articles Geosciences 11 2 85 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
planktonic foraminifera Jurassic chronostratigraphy biochronology evolution Geology QE1-996.5 |
spellingShingle |
planktonic foraminifera Jurassic chronostratigraphy biochronology evolution Geology QE1-996.5 Felix Gradstein Anna Waskowska Larisa Glinskikh The First 40 Million Years of Planktonic Foraminifera |
topic_facet |
planktonic foraminifera Jurassic chronostratigraphy biochronology evolution Geology QE1-996.5 |
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 |
Felix Gradstein Anna Waskowska Larisa Glinskikh |
author_facet |
Felix Gradstein Anna Waskowska Larisa Glinskikh |
author_sort |
Felix Gradstein |
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 |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/geosciences11020085 https://doaj.org/article/7360b8f98c5943b9bb946e17351cbe2d |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Geosciences, Vol 11, Iss 2, p 85 (2021) |
op_relation |
https://www.mdpi.com/2076-3263/11/2/85 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences11020085 2076-3263 https://doaj.org/article/7360b8f98c5943b9bb946e17351cbe2d |
op_doi |
https://doi.org/10.3390/geosciences11020085 |
container_title |
Geosciences |
container_volume |
11 |
container_issue |
2 |
container_start_page |
85 |
_version_ |
1788064621426376704 |