New insights into the taxonomy and evolution of Jurassic planktonic foraminifera

Abstract Globuligerina glinskikhae nov. sp. Gradstein & Waskowska and Globuligerina waskowskae nov. sp. Gradstein are new species of Jurassic planktonic foraminifera from the Middle Jurassic of Dagestan and Poland. G. glinskikhae nov. sp. with its remarkable ‘protoglobigerine’ test may be an ear...

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Published in:Swiss Journal of Palaeontology
Main Authors: Gradstein, Felix M, Waskowska, Anna
Format: Article in Journal/Newspaper
Language:English
Published: 2022
Subjects:
Online Access:http://hdl.handle.net/10852/92355
http://urn.nb.no/URN:NBN:no-94896
https://doi.org/10.1186/s13358-020-00214-8
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spelling ftoslouniv:oai:www.duo.uio.no:10852/92355 2023-05-15T18:00:24+02:00 New insights into the taxonomy and evolution of Jurassic planktonic foraminifera Gradstein, Felix M Waskowska, Anna 2022-02-08T11:05:39Z http://hdl.handle.net/10852/92355 http://urn.nb.no/URN:NBN:no-94896 https://doi.org/10.1186/s13358-020-00214-8 EN eng http://urn.nb.no/URN:NBN:no-94896 Gradstein, Felix M Waskowska, Anna . New insights into the taxonomy and evolution of Jurassic planktonic foraminifera. Swiss Journal of Palaeontology. 2021, 140(1) http://hdl.handle.net/10852/92355 1998987 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Swiss Journal of Palaeontology&rft.volume=140&rft.spage=&rft.date=2021 Swiss Journal of Palaeontology 140 1 0 https://doi.org/10.1186/s13358-020-00214-8 URN:NBN:no-94896 Fulltext https://www.duo.uio.no/bitstream/handle/10852/92355/1/New%2Binsights%2Binto%2Bthe%2Btaxonomy%2B.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1664-2376 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.1186/s13358-020-00214-8 2022-03-16T23:33:52Z Abstract Globuligerina glinskikhae nov. sp. Gradstein & Waskowska and Globuligerina waskowskae nov. sp. Gradstein are new species of Jurassic planktonic foraminifera from the Middle Jurassic of Dagestan and Poland. G. glinskikhae nov. sp. with its remarkable ‘protoglobigerine’ test may be an early evolutionary offshoot of Globuligerina oxfordiana (Grigelis). It may be an index taxon for upper Bajocian through Bathonian strata in Eastern Europe and Southwest Asia, and might be recognizable also in thin sections. We consider G. waskowskae nov. sp. to be a possible forerunner of Conoglobigerina helvetojurassica (Haeusler), the first planktonic foraminiferal species with a reticulate wall texture. Currently, is only known from Poland. In some localities, specimens of G. oxfordiana and of G. glinskikhae nov. sp. posses an additional apertural opening, often lacking a rim; its function is enigmatic. The postulated lineage from Jurassic Globuligerina balakhmatovae (Morozova) to Cretaceous Clavihedbergella eocretacea Neagu is refined with the description of Petaloglobigerina simmonsi nov. gen., nov. sp. Gradstein from the Kimmeridgian of Portugal. The evolutionary transition from G. balakhmatovae to P. simmonsi occurs by means of the ontogenic development of a petaloid test, with a pronounced flattening of the whorl with ovate chambers, the last ones often offset and twisted. Jurassic planktonic foraminifera, now known to consist of three genera and 12+ species underwent long periods of stasis, interrupted by late Bajocian, mid-Oxfordian and early Kimmeridgian evolution. The three ‘stasis and root’ taxa G. oxfordiana , G. bathoniana and G. balakhmat ovae are geographically widespread in lower to mid palaeo-latitudes, and stratigraphically long ranging within the Middle and Late Jurassic. Modern digital microscopes, with co-axial and side LED lighting and excellent image stacking software are important tools in the study of Jurassic planktonic foraminifera, and fast and cost-effective communication tools in modern micropalaeontology. Article in Journal/Newspaper Planktonic foraminifera Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Swiss Journal of Palaeontology 140 1
institution Open Polar
collection Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
op_collection_id ftoslouniv
language English
description Abstract Globuligerina glinskikhae nov. sp. Gradstein & Waskowska and Globuligerina waskowskae nov. sp. Gradstein are new species of Jurassic planktonic foraminifera from the Middle Jurassic of Dagestan and Poland. G. glinskikhae nov. sp. with its remarkable ‘protoglobigerine’ test may be an early evolutionary offshoot of Globuligerina oxfordiana (Grigelis). It may be an index taxon for upper Bajocian through Bathonian strata in Eastern Europe and Southwest Asia, and might be recognizable also in thin sections. We consider G. waskowskae nov. sp. to be a possible forerunner of Conoglobigerina helvetojurassica (Haeusler), the first planktonic foraminiferal species with a reticulate wall texture. Currently, is only known from Poland. In some localities, specimens of G. oxfordiana and of G. glinskikhae nov. sp. posses an additional apertural opening, often lacking a rim; its function is enigmatic. The postulated lineage from Jurassic Globuligerina balakhmatovae (Morozova) to Cretaceous Clavihedbergella eocretacea Neagu is refined with the description of Petaloglobigerina simmonsi nov. gen., nov. sp. Gradstein from the Kimmeridgian of Portugal. The evolutionary transition from G. balakhmatovae to P. simmonsi occurs by means of the ontogenic development of a petaloid test, with a pronounced flattening of the whorl with ovate chambers, the last ones often offset and twisted. Jurassic planktonic foraminifera, now known to consist of three genera and 12+ species underwent long periods of stasis, interrupted by late Bajocian, mid-Oxfordian and early Kimmeridgian evolution. The three ‘stasis and root’ taxa G. oxfordiana , G. bathoniana and G. balakhmat ovae are geographically widespread in lower to mid palaeo-latitudes, and stratigraphically long ranging within the Middle and Late Jurassic. Modern digital microscopes, with co-axial and side LED lighting and excellent image stacking software are important tools in the study of Jurassic planktonic foraminifera, and fast and cost-effective communication tools in modern micropalaeontology.
format Article in Journal/Newspaper
author Gradstein, Felix M
Waskowska, Anna
spellingShingle Gradstein, Felix M
Waskowska, Anna
New insights into the taxonomy and evolution of Jurassic planktonic foraminifera
author_facet Gradstein, Felix M
Waskowska, Anna
author_sort Gradstein, Felix M
title New insights into the taxonomy and evolution of Jurassic planktonic foraminifera
title_short New insights into the taxonomy and evolution of Jurassic planktonic foraminifera
title_full New insights into the taxonomy and evolution of Jurassic planktonic foraminifera
title_fullStr New insights into the taxonomy and evolution of Jurassic planktonic foraminifera
title_full_unstemmed New insights into the taxonomy and evolution of Jurassic planktonic foraminifera
title_sort new insights into the taxonomy and evolution of jurassic planktonic foraminifera
publishDate 2022
url http://hdl.handle.net/10852/92355
http://urn.nb.no/URN:NBN:no-94896
https://doi.org/10.1186/s13358-020-00214-8
genre Planktonic foraminifera
genre_facet Planktonic foraminifera
op_source 1664-2376
op_relation http://urn.nb.no/URN:NBN:no-94896
Gradstein, Felix M Waskowska, Anna . New insights into the taxonomy and evolution of Jurassic planktonic foraminifera. Swiss Journal of Palaeontology. 2021, 140(1)
http://hdl.handle.net/10852/92355
1998987
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Swiss Journal of Palaeontology
140
1
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https://doi.org/10.1186/s13358-020-00214-8
URN:NBN:no-94896
Fulltext https://www.duo.uio.no/bitstream/handle/10852/92355/1/New%2Binsights%2Binto%2Bthe%2Btaxonomy%2B.pdf
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https://creativecommons.org/licenses/by/4.0/
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op_doi https://doi.org/10.1186/s13358-020-00214-8
container_title Swiss Journal of Palaeontology
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