Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus
The protaspides of Missisquoia depressa (Missisquoiidae, Trilobita), from the uppermost Cambrian part of the Rabbitkettle Formation, Mackenzie Mountains, northwestern Canada, are described. Three metaprotaspid stages are recognized, using size as well as features of the anterior border of the cranid...
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2007
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crcansciencepubl:10.1139/e06-113 2024-04-07T07:53:57+00:00 Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus Lee, Dong-Chan Chatterton, Brian DE 2007 http://dx.doi.org/10.1139/e06-113 http://www.nrcresearchpress.com/doi/pdf/10.1139/e06-113 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 44, issue 4, page 493-506 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2007 crcansciencepubl https://doi.org/10.1139/e06-113 2024-03-08T00:37:50Z The protaspides of Missisquoia depressa (Missisquoiidae, Trilobita), from the uppermost Cambrian part of the Rabbitkettle Formation, Mackenzie Mountains, northwestern Canada, are described. Three metaprotaspid stages are recognized, using size as well as features of the anterior border of the cranidium and the shape of the glabella. The morphology of the protaspides is not typical of the Order Corynexochida, suggesting that Missisquoia is not a member of the order to which the genus has been previously assigned. This further indicates that its affinity to the stratigraphically younger styginids and illaenids is questionable. Article in Journal/Newspaper Mackenzie mountains Canadian Science Publishing Canada Canadian Journal of Earth Sciences 44 4 493 506 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Lee, Dong-Chan Chatterton, Brian DE Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus |
topic_facet |
General Earth and Planetary Sciences |
description |
The protaspides of Missisquoia depressa (Missisquoiidae, Trilobita), from the uppermost Cambrian part of the Rabbitkettle Formation, Mackenzie Mountains, northwestern Canada, are described. Three metaprotaspid stages are recognized, using size as well as features of the anterior border of the cranidium and the shape of the glabella. The morphology of the protaspides is not typical of the Order Corynexochida, suggesting that Missisquoia is not a member of the order to which the genus has been previously assigned. This further indicates that its affinity to the stratigraphically younger styginids and illaenids is questionable. |
format |
Article in Journal/Newspaper |
author |
Lee, Dong-Chan Chatterton, Brian DE |
author_facet |
Lee, Dong-Chan Chatterton, Brian DE |
author_sort |
Lee, Dong-Chan |
title |
Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus |
title_short |
Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus |
title_full |
Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus |
title_fullStr |
Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus |
title_full_unstemmed |
Protaspides of uppermost Cambrian trilobite Missisquoia , with implications for suprafamilial level classification of the genus |
title_sort |
protaspides of uppermost cambrian trilobite missisquoia , with implications for suprafamilial level classification of the genus |
publisher |
Canadian Science Publishing |
publishDate |
2007 |
url |
http://dx.doi.org/10.1139/e06-113 http://www.nrcresearchpress.com/doi/pdf/10.1139/e06-113 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Mackenzie mountains |
genre_facet |
Mackenzie mountains |
op_source |
Canadian Journal of Earth Sciences volume 44, issue 4, page 493-506 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e06-113 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
44 |
container_issue |
4 |
container_start_page |
493 |
op_container_end_page |
506 |
_version_ |
1795670165676883968 |