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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ftdoajarticles:oai:doaj.org/article:8399f6ced43f427bbac3271d3899880b 2023-05-15T18:00:21+02:00 New insights into the taxonomy and evolution of Jurassic planktonic foraminifera Felix Gradstein Anna Waskowska 2021-01-01T00:00:00Z https://doi.org/10.1186/s13358-020-00214-8 https://doaj.org/article/8399f6ced43f427bbac3271d3899880b EN eng SpringerOpen https://doi.org/10.1186/s13358-020-00214-8 https://doaj.org/toc/1664-2376 https://doaj.org/toc/1664-2384 doi:10.1186/s13358-020-00214-8 1664-2376 1664-2384 https://doaj.org/article/8399f6ced43f427bbac3271d3899880b Swiss Journal of Palaeontology, Vol 140, Iss 1, Pp 1-12 (2021) Jurassic Planktonic foraminifera Evolution Biostratigraphy and palaeoecology Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 article 2021 ftdoajarticles https://doi.org/10.1186/s13358-020-00214-8 2022-12-31T04:44:35Z 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. balakhmatovae 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 ... Article in Journal/Newspaper Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles Swiss Journal of Palaeontology 140 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Jurassic Planktonic foraminifera Evolution Biostratigraphy and palaeoecology Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
spellingShingle |
Jurassic Planktonic foraminifera Evolution Biostratigraphy and palaeoecology Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 Felix Gradstein Anna Waskowska New insights into the taxonomy and evolution of Jurassic planktonic foraminifera |
topic_facet |
Jurassic Planktonic foraminifera Evolution Biostratigraphy and palaeoecology Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
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. balakhmatovae 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 ... |
format |
Article in Journal/Newspaper |
author |
Felix Gradstein Anna Waskowska |
author_facet |
Felix Gradstein Anna Waskowska |
author_sort |
Felix Gradstein |
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 |
publisher |
SpringerOpen |
publishDate |
2021 |
url |
https://doi.org/10.1186/s13358-020-00214-8 https://doaj.org/article/8399f6ced43f427bbac3271d3899880b |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Swiss Journal of Palaeontology, Vol 140, Iss 1, Pp 1-12 (2021) |
op_relation |
https://doi.org/10.1186/s13358-020-00214-8 https://doaj.org/toc/1664-2376 https://doaj.org/toc/1664-2384 doi:10.1186/s13358-020-00214-8 1664-2376 1664-2384 https://doaj.org/article/8399f6ced43f427bbac3271d3899880b |
op_doi |
https://doi.org/10.1186/s13358-020-00214-8 |
container_title |
Swiss Journal of Palaeontology |
container_volume |
140 |
container_issue |
1 |
_version_ |
1766169416367603712 |