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...
Published in: | Geosciences |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3390/geosciences11020085 |
id |
ftmdpi:oai:mdpi.com:/2076-3263/11/2/85/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2076-3263/11/2/85/ 2023-08-20T04:09:19+02:00 The First 40 Million Years of Planktonic Foraminifera Felix Gradstein Anna Waskowska Larisa Glinskikh agris 2021-02-13 application/pdf https://doi.org/10.3390/geosciences11020085 EN eng Multidisciplinary Digital Publishing Institute Biogeosciences https://dx.doi.org/10.3390/geosciences11020085 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 11; Issue 2; Pages: 85 planktonic foraminifera Jurassic chronostratigraphy biochronology evolution Text 2021 ftmdpi https://doi.org/10.3390/geosciences11020085 2023-08-01T01:04:22Z 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. Text Planktonic foraminifera MDPI Open Access Publishing Geosciences 11 2 85 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
planktonic foraminifera Jurassic chronostratigraphy biochronology evolution |
spellingShingle |
planktonic foraminifera Jurassic chronostratigraphy biochronology evolution Felix Gradstein Anna Waskowska Larisa Glinskikh The First 40 Million Years of Planktonic Foraminifera |
topic_facet |
planktonic foraminifera Jurassic chronostratigraphy biochronology evolution |
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 |
Text |
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 |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/geosciences11020085 |
op_coverage |
agris |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Geosciences; Volume 11; Issue 2; Pages: 85 |
op_relation |
Biogeosciences https://dx.doi.org/10.3390/geosciences11020085 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences11020085 |
container_title |
Geosciences |
container_volume |
11 |
container_issue |
2 |
container_start_page |
85 |
_version_ |
1774722176283312128 |