Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia
Pentameroides is a large-shelled pentameride brachiopod, which was widespread throughout Laurentia in the early Silurian (Telychian). Evolving from Pentamerus in the early Telychian, it dispersed from its subtropical/high tropical origin to sub-equatorial intracratonic seas by the late Llandovery. I...
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ftunivtoronto:oai:localhost:1807/71998 2023-05-15T13:07:41+02:00 Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia Gushulak, Cale Anthony Camille Jin, Jisuo Rudkin, David M. 2015-12-22 http://hdl.handle.net/1807/71998 http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2015-0183 unknown NRC Research Press (a division of Canadian Science Publishing) 0008-4077 http://hdl.handle.net/1807/71998 http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2015-0183 Article 2015 ftunivtoronto 2020-06-17T11:58:47Z Pentameroides is a large-shelled pentameride brachiopod, which was widespread throughout Laurentia in the early Silurian (Telychian). Evolving from Pentamerus in the early Telychian, it dispersed from its subtropical/high tropical origin to sub-equatorial intracratonic seas by the late Llandovery. In this study large collections of reef-dwelling Pentameroides septentrionalis from the Attawapiskat Formation, Akimiski Island, Nunavut and level-bottom-inhabiting Pentameroides subrectus from the Fossil Hill Formation, Manitoulin Island, Ontario, and the Jupiter Formation, Anticosti Island, Quebec, were biometrically analyzed for seven external morphological features. Bivariate and ordination analysis (PCA) revealed that P. septentrionalis has a more globose, more biconvex shell with a larger ventral umbo than P. subrectus. These morphological differences, coupled with their excellent preservation in shallow-water reefal environments, suggest that P. septentrionalis was adapted to a relatively low-turbulence, hurricane-free, nutrient stressed environment near the equator ( The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. Article in Journal/Newspaper Akimiski island Attawapiskat Nunavut University of Toronto: Research Repository T-Space Akimiski Island ENVELOPE(-81.275,-81.275,53.008,53.008) Attawapiskat ENVELOPE(-82.417,-82.417,52.928,52.928) Fossil Hill ENVELOPE(-58.977,-58.977,-62.206,-62.206) Jupiter ENVELOPE(101.133,101.133,-66.117,-66.117) Nunavut |
institution |
Open Polar |
collection |
University of Toronto: Research Repository T-Space |
op_collection_id |
ftunivtoronto |
language |
unknown |
description |
Pentameroides is a large-shelled pentameride brachiopod, which was widespread throughout Laurentia in the early Silurian (Telychian). Evolving from Pentamerus in the early Telychian, it dispersed from its subtropical/high tropical origin to sub-equatorial intracratonic seas by the late Llandovery. In this study large collections of reef-dwelling Pentameroides septentrionalis from the Attawapiskat Formation, Akimiski Island, Nunavut and level-bottom-inhabiting Pentameroides subrectus from the Fossil Hill Formation, Manitoulin Island, Ontario, and the Jupiter Formation, Anticosti Island, Quebec, were biometrically analyzed for seven external morphological features. Bivariate and ordination analysis (PCA) revealed that P. septentrionalis has a more globose, more biconvex shell with a larger ventral umbo than P. subrectus. These morphological differences, coupled with their excellent preservation in shallow-water reefal environments, suggest that P. septentrionalis was adapted to a relatively low-turbulence, hurricane-free, nutrient stressed environment near the equator ( The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. |
format |
Article in Journal/Newspaper |
author |
Gushulak, Cale Anthony Camille Jin, Jisuo Rudkin, David M. |
spellingShingle |
Gushulak, Cale Anthony Camille Jin, Jisuo Rudkin, David M. Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia |
author_facet |
Gushulak, Cale Anthony Camille Jin, Jisuo Rudkin, David M. |
author_sort |
Gushulak, Cale Anthony Camille |
title |
Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia |
title_short |
Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia |
title_full |
Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia |
title_fullStr |
Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia |
title_full_unstemmed |
Paleolatitudinal morpho-gradient of the early Silurian brachiopod Pentameroides in Laurentia |
title_sort |
paleolatitudinal morpho-gradient of the early silurian brachiopod pentameroides in laurentia |
publisher |
NRC Research Press (a division of Canadian Science Publishing) |
publishDate |
2015 |
url |
http://hdl.handle.net/1807/71998 http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2015-0183 |
long_lat |
ENVELOPE(-81.275,-81.275,53.008,53.008) ENVELOPE(-82.417,-82.417,52.928,52.928) ENVELOPE(-58.977,-58.977,-62.206,-62.206) ENVELOPE(101.133,101.133,-66.117,-66.117) |
geographic |
Akimiski Island Attawapiskat Fossil Hill Jupiter Nunavut |
geographic_facet |
Akimiski Island Attawapiskat Fossil Hill Jupiter Nunavut |
genre |
Akimiski island Attawapiskat Nunavut |
genre_facet |
Akimiski island Attawapiskat Nunavut |
op_relation |
0008-4077 http://hdl.handle.net/1807/71998 http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2015-0183 |
_version_ |
1766063802481115136 |