New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada
A new species of olenelline trilobite, Nevadella keelensis , is described from the Early Cambrian (Cambrian Series 2, Stage 3) in the Sekwi Formation, Mackenzie Mountains, Canada. The difficulty in discerning between Nevadia Walcott, 1910 and Nevadella Raw, 1936 is discussed, and a revision of the t...
Published in: | Canadian Journal of Earth Sciences |
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crcansciencepubl:10.1139/e10-073 2023-12-17T10:33:15+01:00 New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada Abe, Francine R. Lieberman, Bruce S. Pope, Michael C. Dilliard, Kelly Jin, Jisuo 2010 http://dx.doi.org/10.1139/e10-073 http://www.nrcresearchpress.com/doi/full-xml/10.1139/E10-073 http://www.nrcresearchpress.com/doi/pdf/10.1139/E10-073 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 47, issue 12, page 1445-1449 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2010 crcansciencepubl https://doi.org/10.1139/e10-073 2023-11-19T13:38:42Z A new species of olenelline trilobite, Nevadella keelensis , is described from the Early Cambrian (Cambrian Series 2, Stage 3) in the Sekwi Formation, Mackenzie Mountains, Canada. The difficulty in discerning between Nevadia Walcott, 1910 and Nevadella Raw, 1936 is discussed, and a revision of the two genera is suggested, particularly with the addition of Nevadella keelensis n. sp. A holmiid trilobite, perhaps conspecific with Esmeraldina rowei (Walcott, 1910), was also confirmed from the same locality. The E. sp. aff. rowei represents the narrow form of a species known for great variability in cephalic form. The trilobite material comes from a low diversity, shallow water, peritidal facies that was not sampled in previous studies of Cambrian fossils in the area, and could prove useful in facilitating biostratigraphic correlation across the Selwyn Basin and with other parts of Laurentia as well. Article in Journal/Newspaper Mackenzie mountains Canadian Science Publishing (via Crossref) Canada Selwyn ENVELOPE(-138.287,-138.287,62.799,62.799) Walcott ENVELOPE(-63.317,-63.317,-69.083,-69.083) Canadian Journal of Earth Sciences 47 12 1445 1449 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Abe, Francine R. Lieberman, Bruce S. Pope, Michael C. Dilliard, Kelly New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
A new species of olenelline trilobite, Nevadella keelensis , is described from the Early Cambrian (Cambrian Series 2, Stage 3) in the Sekwi Formation, Mackenzie Mountains, Canada. The difficulty in discerning between Nevadia Walcott, 1910 and Nevadella Raw, 1936 is discussed, and a revision of the two genera is suggested, particularly with the addition of Nevadella keelensis n. sp. A holmiid trilobite, perhaps conspecific with Esmeraldina rowei (Walcott, 1910), was also confirmed from the same locality. The E. sp. aff. rowei represents the narrow form of a species known for great variability in cephalic form. The trilobite material comes from a low diversity, shallow water, peritidal facies that was not sampled in previous studies of Cambrian fossils in the area, and could prove useful in facilitating biostratigraphic correlation across the Selwyn Basin and with other parts of Laurentia as well. |
author2 |
Jin, Jisuo |
format |
Article in Journal/Newspaper |
author |
Abe, Francine R. Lieberman, Bruce S. Pope, Michael C. Dilliard, Kelly |
author_facet |
Abe, Francine R. Lieberman, Bruce S. Pope, Michael C. Dilliard, Kelly |
author_sort |
Abe, Francine R. |
title |
New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada |
title_short |
New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada |
title_full |
New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada |
title_fullStr |
New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada |
title_full_unstemmed |
New information on olenelline trilobites from the Cambrian Sekwi Formation in northwestern Canada |
title_sort |
new information on olenelline trilobites from the cambrian sekwi formation in northwestern canada |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/e10-073 http://www.nrcresearchpress.com/doi/full-xml/10.1139/E10-073 http://www.nrcresearchpress.com/doi/pdf/10.1139/E10-073 |
long_lat |
ENVELOPE(-138.287,-138.287,62.799,62.799) ENVELOPE(-63.317,-63.317,-69.083,-69.083) |
geographic |
Canada Selwyn Walcott |
geographic_facet |
Canada Selwyn Walcott |
genre |
Mackenzie mountains |
genre_facet |
Mackenzie mountains |
op_source |
Canadian Journal of Earth Sciences volume 47, issue 12, page 1445-1449 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e10-073 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
47 |
container_issue |
12 |
container_start_page |
1445 |
op_container_end_page |
1449 |
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1785587179949391872 |