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...
Published in: | Palynology |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | English |
Published: |
AASP: The Palynological Society
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1080/01916122.2018.1430070 |
id |
ftbioone:10.1080/01916122.2018.1430070 |
---|---|
record_format |
openpolar |
spelling |
ftbioone:10.1080/01916122.2018.1430070 2024-06-02T07:58:31+00:00 Nucicla umbiliphora gen. et sp. nov.: A Quaternary Peridinioid Dinoflagellate Cyst from the Antarctic margin Julian D. Hartman Francesca Sangiorgi Peter K. Bijl Julian D. Hartman Francesca Sangiorgi Peter K. Bijl world 2019-02-01 text/HTML https://doi.org/10.1080/01916122.2018.1430070 en eng AASP: The Palynological Society doi:10.1080/01916122.2018.1430070 All rights reserved. https://doi.org/10.1080/01916122.2018.1430070 Text 2019 ftbioone https://doi.org/10.1080/01916122.2018.1430070 2024-05-07T00:50:35Z 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. Text Antarc* Antarctic Ross Sea Sea ice BioOne Online Journals Antarctic The Antarctic Ross Sea Palynology 43 1 94 103 |
institution |
Open Polar |
collection |
BioOne Online Journals |
op_collection_id |
ftbioone |
language |
English |
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 |
Julian D. Hartman Francesca Sangiorgi Peter K. Bijl |
format |
Text |
author |
Julian D. Hartman Francesca Sangiorgi Peter K. Bijl |
spellingShingle |
Julian D. Hartman Francesca Sangiorgi Peter K. Bijl Nucicla umbiliphora gen. et sp. nov.: A Quaternary Peridinioid Dinoflagellate Cyst from the Antarctic margin |
author_facet |
Julian D. Hartman Francesca Sangiorgi Peter K. Bijl |
author_sort |
Julian D. Hartman |
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 |
publisher |
AASP: The Palynological Society |
publishDate |
2019 |
url |
https://doi.org/10.1080/01916122.2018.1430070 |
op_coverage |
world |
geographic |
Antarctic The Antarctic Ross Sea |
geographic_facet |
Antarctic The Antarctic Ross Sea |
genre |
Antarc* Antarctic Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Ross Sea Sea ice |
op_source |
https://doi.org/10.1080/01916122.2018.1430070 |
op_relation |
doi:10.1080/01916122.2018.1430070 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1080/01916122.2018.1430070 |
container_title |
Palynology |
container_volume |
43 |
container_issue |
1 |
container_start_page |
94 |
op_container_end_page |
103 |
_version_ |
1800741887578996736 |