Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin
In the southern high latitudes, dinoflagellate cysts are an important microfossil group for both biostratigraphic and palaeoenvironmental interpretations purposes. In light of this, the peridinioid dinoflagellate cyst Nucicla umbiliphora gen. et sp. nov. from the Antarctic margin is formally describ...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/378109 2023-11-12T04:08:39+01:00 Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin Hartman, Julian D. Sangiorgi, Francesca Bijl, Peter K. Versteegh, Gerard J.M. Marine palynology and palaeoceanography Marine Palynology 2019 image/pdf https://dspace.library.uu.nl/handle/1874/378109 en eng 0191-6122 https://dspace.library.uu.nl/handle/1874/378109 info:eu-repo/semantics/OpenAccess Antarctic shelf dinoflagellate cyst East Antarctica protoperidinioid Quaternary Palaeontology Article 2019 ftunivutrecht 2023-11-01T23:20:24Z In the southern high latitudes, dinoflagellate cysts are an important microfossil group for both biostratigraphic and palaeoenvironmental interpretations purposes. In light of this, the peridinioid dinoflagellate cyst Nucicla umbiliphora gen. et sp. nov. from the Antarctic margin is formally described. Nucicla is dorsoventrally compressed, has a rounded pentagonal outline in dorso-ventral view, an epicyst that is only half as high as the hypocyst, an unusual archaeopyle formed by the loss of the three anterior intercalary plates, and a posterior sulcal plate that is positioned at the antapex. The species N. umbiliphora is characterised by a scabrate cyst wall and possesses undulated and/or crenulated folds/ridges. It has been so far exclusively found in Quaternary sediments obtained from the East Antarctic continental shelf and the Ross Sea. Although the dinoflagellate producing this cyst is as yet unknown, its brown color and the lack of autofluorescence suggest that the motile cell is likely a heterotrophic Protoperidinium species. As such, N. umbiliphora might benefit from the phytoplankton blooms occurring close to the Antarctic margin after seasonal sea-ice retreat. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ross Sea Sea ice Utrecht University Repository Antarctic East Antarctica Ross Sea The Antarctic |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Antarctic shelf dinoflagellate cyst East Antarctica protoperidinioid Quaternary Palaeontology |
spellingShingle |
Antarctic shelf dinoflagellate cyst East Antarctica protoperidinioid Quaternary Palaeontology Hartman, Julian D. Sangiorgi, Francesca Bijl, Peter K. Versteegh, Gerard J.M. Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin |
topic_facet |
Antarctic shelf dinoflagellate cyst East Antarctica protoperidinioid Quaternary Palaeontology |
description |
In the southern high latitudes, dinoflagellate cysts are an important microfossil group for both biostratigraphic and palaeoenvironmental interpretations purposes. In light of this, the peridinioid dinoflagellate cyst Nucicla umbiliphora gen. et sp. nov. from the Antarctic margin is formally described. Nucicla is dorsoventrally compressed, has a rounded pentagonal outline in dorso-ventral view, an epicyst that is only half as high as the hypocyst, an unusual archaeopyle formed by the loss of the three anterior intercalary plates, and a posterior sulcal plate that is positioned at the antapex. The species N. umbiliphora is characterised by a scabrate cyst wall and possesses undulated and/or crenulated folds/ridges. It has been so far exclusively found in Quaternary sediments obtained from the East Antarctic continental shelf and the Ross Sea. Although the dinoflagellate producing this cyst is as yet unknown, its brown color and the lack of autofluorescence suggest that the motile cell is likely a heterotrophic Protoperidinium species. As such, N. umbiliphora might benefit from the phytoplankton blooms occurring close to the Antarctic margin after seasonal sea-ice retreat. |
author2 |
Marine palynology and palaeoceanography Marine Palynology |
format |
Article in Journal/Newspaper |
author |
Hartman, Julian D. Sangiorgi, Francesca Bijl, Peter K. Versteegh, Gerard J.M. |
author_facet |
Hartman, Julian D. Sangiorgi, Francesca Bijl, Peter K. Versteegh, Gerard J.M. |
author_sort |
Hartman, Julian D. |
title |
Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin |
title_short |
Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin |
title_full |
Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin |
title_fullStr |
Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin |
title_full_unstemmed |
Nucicla umbiliphora gen. et sp. nov.: a Quaternary peridinioid dinoflagellate cyst from the Antarctic margin |
title_sort |
nucicla umbiliphora gen. et sp. nov.: a quaternary peridinioid dinoflagellate cyst from the antarctic margin |
publishDate |
2019 |
url |
https://dspace.library.uu.nl/handle/1874/378109 |
geographic |
Antarctic East Antarctica Ross Sea The Antarctic |
geographic_facet |
Antarctic East Antarctica Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ross Sea Sea ice |
op_relation |
0191-6122 https://dspace.library.uu.nl/handle/1874/378109 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782328891101151232 |