The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland
The operculum of Teiichispira odenvillensis has been mentioned in literature as occurring at Port au Port, western New foundland, but has not heretofore been documented. It is present in the lower part of the Aguathuna Formation along with opercula of Ceratopea unguis, another indicator of late Earl...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1992
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Online Access: | http://dx.doi.org/10.1139/e92-107 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-107 |
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crcansciencepubl:10.1139/e92-107 2023-12-17T10:44:50+01:00 The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland Yochelson, Ellis L. 1992 http://dx.doi.org/10.1139/e92-107 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-107 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 29, issue 6, page 1334-1341 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1992 crcansciencepubl https://doi.org/10.1139/e92-107 2023-11-19T13:39:18Z The operculum of Teiichispira odenvillensis has been mentioned in literature as occurring at Port au Port, western New foundland, but has not heretofore been documented. It is present in the lower part of the Aguathuna Formation along with opercula of Ceratopea unguis, another indicator of late Early Ordovician age. The rodlike construction, and subsequent fibrous appearance of this operculum when silicified, appears to be unique, making it readily identifiable in the field. Although Teiichispira has been closely allied with Maclurites, in part because each genus has a calcified operculum, the forms of opercula are sufficiently different that one may be dealing with a convergent adaptation, the heavy operculum adding weight to the animal and allowing it to live in more agitated waters. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Canadian Journal of Earth Sciences 29 6 1334 1341 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Yochelson, Ellis L. The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland |
topic_facet |
General Earth and Planetary Sciences |
description |
The operculum of Teiichispira odenvillensis has been mentioned in literature as occurring at Port au Port, western New foundland, but has not heretofore been documented. It is present in the lower part of the Aguathuna Formation along with opercula of Ceratopea unguis, another indicator of late Early Ordovician age. The rodlike construction, and subsequent fibrous appearance of this operculum when silicified, appears to be unique, making it readily identifiable in the field. Although Teiichispira has been closely allied with Maclurites, in part because each genus has a calcified operculum, the forms of opercula are sufficiently different that one may be dealing with a convergent adaptation, the heavy operculum adding weight to the animal and allowing it to live in more agitated waters. |
format |
Article in Journal/Newspaper |
author |
Yochelson, Ellis L. |
author_facet |
Yochelson, Ellis L. |
author_sort |
Yochelson, Ellis L. |
title |
The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland |
title_short |
The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland |
title_full |
The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland |
title_fullStr |
The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland |
title_full_unstemmed |
The late Early Ordovician gastropod Teiichispira at Port au Port, Newfoundland |
title_sort |
late early ordovician gastropod teiichispira at port au port, newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1992 |
url |
http://dx.doi.org/10.1139/e92-107 http://www.nrcresearchpress.com/doi/pdf/10.1139/e92-107 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Earth Sciences volume 29, issue 6, page 1334-1341 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e92-107 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
29 |
container_issue |
6 |
container_start_page |
1334 |
op_container_end_page |
1341 |
_version_ |
1785564110131298304 |