Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada
Silurian Wenlock Series deposits of the Cape Phillips Formation on Baillie-Hamilton Island and Cornwallis Island, Arctic Canada, have yielded a silicified ostracod assemblage that spans the late Sheinwoodian and Homerian stages. Sixteen palaeocope ostracod species are recorded, including the new spe...
Published in: | Canadian Journal of Earth Sciences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2016
|
Subjects: | |
Online Access: | https://doi.org/10.1139/E10-010 https://ora.ox.ac.uk/objects/uuid:0c039cc2-186d-4716-98ac-90529127ed04 |
id |
ftuloxford:oai:ora.ox.ac.uk:uuid:0c039cc2-186d-4716-98ac-90529127ed04 |
---|---|
record_format |
openpolar |
spelling |
ftuloxford:oai:ora.ox.ac.uk:uuid:0c039cc2-186d-4716-98ac-90529127ed04 2023-05-15T14:57:14+02:00 Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada Miller, C Williams, M Siveter, D 2016-07-28 https://doi.org/10.1139/E10-010 https://ora.ox.ac.uk/objects/uuid:0c039cc2-186d-4716-98ac-90529127ed04 eng eng doi:10.1139/E10-010 https://ora.ox.ac.uk/objects/uuid:0c039cc2-186d-4716-98ac-90529127ed04 https://doi.org/10.1139/E10-010 info:eu-repo/semantics/embargoedAccess Journal article 2016 ftuloxford https://doi.org/10.1139/E10-010 2022-06-28T20:05:38Z Silurian Wenlock Series deposits of the Cape Phillips Formation on Baillie-Hamilton Island and Cornwallis Island, Arctic Canada, have yielded a silicified ostracod assemblage that spans the late Sheinwoodian and Homerian stages. Sixteen palaeocope ostracod species are recorded, including the new species Beyrichia (Beyrichia) marssae, Gabrielsella? copelandi, and Platybolbina (Abruptobolbina) adraini. The ostracod faunas can be linked into local trilobite, microvertebrate, and graptolite zonal schemes, and a few of the ostracod species offer potential for local and perhaps wider biostratigraphical correlation. The ostracods are mostly known only from the Cape Phillips Formation, but also include two taxa found in the Wenlock Series of the Avalanche Lake area, Northwest Territories, Canada. Other ostracod species suggest links with Silurian successions in northern Canada and the Baltic. Low-diversity ostracod faunas characterize the level of a marked positive carbon isotope excursion and coeval mid-Homerian regression at the level of the regional Pristiograptus dubius - Gothograptus nassa graptolite Biozone. Comparison with the pattern of distribution of coeval ostracod faunas elsewhere in Canada suggests that diversity changes in the Cape Phillips Formation ostracod faunas are controlled by local palaeoenvironmental factors perhaps linked to global sea-level change. Article in Journal/Newspaper Arctic Cornwallis Island Northwest Territories ORA - Oxford University Research Archive Arctic Avalanche Lake ENVELOPE(-127.235,-127.235,62.417,62.417) Baillie ENVELOPE(-128.013,-128.013,70.561,70.561) Baillie-Hamilton Island ENVELOPE(-94.584,-94.584,75.868,75.868) Canada Cape Phillips ENVELOPE(-62.600,-62.600,-84.750,-84.750) Cornwallis ENVELOPE(-54.464,-54.464,-61.072,-61.072) Cornwallis Island ENVELOPE(-95.001,-95.001,75.135,75.135) Northwest Territories Canadian Journal of Earth Sciences 47 6 913 925 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
description |
Silurian Wenlock Series deposits of the Cape Phillips Formation on Baillie-Hamilton Island and Cornwallis Island, Arctic Canada, have yielded a silicified ostracod assemblage that spans the late Sheinwoodian and Homerian stages. Sixteen palaeocope ostracod species are recorded, including the new species Beyrichia (Beyrichia) marssae, Gabrielsella? copelandi, and Platybolbina (Abruptobolbina) adraini. The ostracod faunas can be linked into local trilobite, microvertebrate, and graptolite zonal schemes, and a few of the ostracod species offer potential for local and perhaps wider biostratigraphical correlation. The ostracods are mostly known only from the Cape Phillips Formation, but also include two taxa found in the Wenlock Series of the Avalanche Lake area, Northwest Territories, Canada. Other ostracod species suggest links with Silurian successions in northern Canada and the Baltic. Low-diversity ostracod faunas characterize the level of a marked positive carbon isotope excursion and coeval mid-Homerian regression at the level of the regional Pristiograptus dubius - Gothograptus nassa graptolite Biozone. Comparison with the pattern of distribution of coeval ostracod faunas elsewhere in Canada suggests that diversity changes in the Cape Phillips Formation ostracod faunas are controlled by local palaeoenvironmental factors perhaps linked to global sea-level change. |
format |
Article in Journal/Newspaper |
author |
Miller, C Williams, M Siveter, D |
spellingShingle |
Miller, C Williams, M Siveter, D Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada |
author_facet |
Miller, C Williams, M Siveter, D |
author_sort |
Miller, C |
title |
Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada |
title_short |
Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada |
title_full |
Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada |
title_fullStr |
Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada |
title_full_unstemmed |
Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada |
title_sort |
palaeocope ostracods from the silurian wenlock series of arctic canada |
publishDate |
2016 |
url |
https://doi.org/10.1139/E10-010 https://ora.ox.ac.uk/objects/uuid:0c039cc2-186d-4716-98ac-90529127ed04 |
long_lat |
ENVELOPE(-127.235,-127.235,62.417,62.417) ENVELOPE(-128.013,-128.013,70.561,70.561) ENVELOPE(-94.584,-94.584,75.868,75.868) ENVELOPE(-62.600,-62.600,-84.750,-84.750) ENVELOPE(-54.464,-54.464,-61.072,-61.072) ENVELOPE(-95.001,-95.001,75.135,75.135) |
geographic |
Arctic Avalanche Lake Baillie Baillie-Hamilton Island Canada Cape Phillips Cornwallis Cornwallis Island Northwest Territories |
geographic_facet |
Arctic Avalanche Lake Baillie Baillie-Hamilton Island Canada Cape Phillips Cornwallis Cornwallis Island Northwest Territories |
genre |
Arctic Cornwallis Island Northwest Territories |
genre_facet |
Arctic Cornwallis Island Northwest Territories |
op_relation |
doi:10.1139/E10-010 https://ora.ox.ac.uk/objects/uuid:0c039cc2-186d-4716-98ac-90529127ed04 https://doi.org/10.1139/E10-010 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1139/E10-010 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
47 |
container_issue |
6 |
container_start_page |
913 |
op_container_end_page |
925 |
_version_ |
1766329315995156480 |