Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica
The peridiniacean dinoflagellate cyst Manumiella seymourensis new species described herein characterizes Maastrichtian shallow marine sediments cropping out on Seymour Island, northeastern Antarctic Peninsula. It dominates palynological assemblages throughout the lower Maastrichtian (and possibly up...
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Language: | English |
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Cambridge University Press (CUP)
1999
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Online Access: | http://dx.doi.org/10.1017/s0022336000027888 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000027888 |
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crcambridgeupr:10.1017/s0022336000027888 2024-09-15T17:42:42+00:00 Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica Askin, Rosemary A. 1999 http://dx.doi.org/10.1017/s0022336000027888 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000027888 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Paleontology volume 73, issue 3, page 373-379 ISSN 0022-3360 1937-2337 journal-article 1999 crcambridgeupr https://doi.org/10.1017/s0022336000027888 2024-07-24T04:04:15Z The peridiniacean dinoflagellate cyst Manumiella seymourensis new species described herein characterizes Maastrichtian shallow marine sediments cropping out on Seymour Island, northeastern Antarctic Peninsula. It dominates palynological assemblages throughout the lower Maastrichtian (and possibly uppermost Campanian) to lower upper Maastrichtian part of the López de Bertodano Formation. Despite its superficial similarity to some other southern mid to high paleolatitude Campanian-Maastrichtian species, M. seymourensis represents a discrete, biostratigraphically useful population of peridiniacean cysts. Its morphology and size parameters remain consistent throughout almost all of its stratigraphic range, equated with relatively stable environmental conditions throughout much of the Maastrichtian in the James Ross Basin. Morphological variations, equated with environmental change, are apparent in specimens in the lowermost and uppermost parts of its range. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island Cambridge University Press Journal of Paleontology 73 3 373 379 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
The peridiniacean dinoflagellate cyst Manumiella seymourensis new species described herein characterizes Maastrichtian shallow marine sediments cropping out on Seymour Island, northeastern Antarctic Peninsula. It dominates palynological assemblages throughout the lower Maastrichtian (and possibly uppermost Campanian) to lower upper Maastrichtian part of the López de Bertodano Formation. Despite its superficial similarity to some other southern mid to high paleolatitude Campanian-Maastrichtian species, M. seymourensis represents a discrete, biostratigraphically useful population of peridiniacean cysts. Its morphology and size parameters remain consistent throughout almost all of its stratigraphic range, equated with relatively stable environmental conditions throughout much of the Maastrichtian in the James Ross Basin. Morphological variations, equated with environmental change, are apparent in specimens in the lowermost and uppermost parts of its range. |
format |
Article in Journal/Newspaper |
author |
Askin, Rosemary A. |
spellingShingle |
Askin, Rosemary A. Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica |
author_facet |
Askin, Rosemary A. |
author_sort |
Askin, Rosemary A. |
title |
Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica |
title_short |
Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica |
title_full |
Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica |
title_fullStr |
Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica |
title_full_unstemmed |
Manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the Maastrichtian of Seymour Island, Antarctica |
title_sort |
manumiella seymourensis new species, a stratigraphically significant dinoflagellate cyst from the maastrichtian of seymour island, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
1999 |
url |
http://dx.doi.org/10.1017/s0022336000027888 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000027888 |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island |
op_source |
Journal of Paleontology volume 73, issue 3, page 373-379 ISSN 0022-3360 1937-2337 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0022336000027888 |
container_title |
Journal of Paleontology |
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73 |
container_issue |
3 |
container_start_page |
373 |
op_container_end_page |
379 |
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1810489418701602816 |