Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada
Twenty-two graptolite species are described from the Tremadoc portion of the Road River Group. In a 220 m thick, graptolite-rich section on Peel River, six graptolite biozones are recognized which in ascending order are: Staurograptus dichotomus, Anisograptus matanensis, Adelograptus cf. A. tenellus...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/s0016756802007227 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756802007227 |
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crcambridgeupr:10.1017/s0016756802007227 2024-03-03T08:47:45+00:00 Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada JACKSON, D. E. LENZ, A. C. 2003 http://dx.doi.org/10.1017/s0016756802007227 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756802007227 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 140, issue 2, page 131-156 ISSN 0016-7568 1469-5081 Geology journal-article 2003 crcambridgeupr https://doi.org/10.1017/s0016756802007227 2024-02-08T08:36:23Z Twenty-two graptolite species are described from the Tremadoc portion of the Road River Group. In a 220 m thick, graptolite-rich section on Peel River, six graptolite biozones are recognized which in ascending order are: Staurograptus dichotomus, Anisograptus matanensis, Adelograptus cf. A. tenellus, Adelograptus antiquus, Kiaerograptus pritchardi and Paradelograptus kinnegraptoides . The Psigraptus fauna appears to be confined to a single bedding-plane within a thick interval dominated by Adelograptus cf. A. tenellus , and for this reason we propose a new zone characterized by the latter species rather than identify a Psigraptus Biozone as in China. The Adelograptus cf. A. tenellus Biozone has yielded Adelograptus ? bulmani Spjeldnaes 1963, which we propose as the type species for the new genus Ancoragraptus . Graptolites recorded from the Tremadoc of the Yukon for the first time are: Ancoragraptus bulmani, Clonograptus magnificus, C . cf. C. multiplex, C . cf. C. rigidus, Hunnegraptus copiosus, Kiaerograptus ? bulmani and K ? kutchini sp. nov. Article in Journal/Newspaper Peel River Yukon Cambridge University Press Yukon Canada Peel River ENVELOPE(-135.005,-135.005,67.000,67.000) Road River ENVELOPE(-134.938,-134.938,66.833,66.833) Geological Magazine 140 2 131 156 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology |
spellingShingle |
Geology JACKSON, D. E. LENZ, A. C. Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada |
topic_facet |
Geology |
description |
Twenty-two graptolite species are described from the Tremadoc portion of the Road River Group. In a 220 m thick, graptolite-rich section on Peel River, six graptolite biozones are recognized which in ascending order are: Staurograptus dichotomus, Anisograptus matanensis, Adelograptus cf. A. tenellus, Adelograptus antiquus, Kiaerograptus pritchardi and Paradelograptus kinnegraptoides . The Psigraptus fauna appears to be confined to a single bedding-plane within a thick interval dominated by Adelograptus cf. A. tenellus , and for this reason we propose a new zone characterized by the latter species rather than identify a Psigraptus Biozone as in China. The Adelograptus cf. A. tenellus Biozone has yielded Adelograptus ? bulmani Spjeldnaes 1963, which we propose as the type species for the new genus Ancoragraptus . Graptolites recorded from the Tremadoc of the Yukon for the first time are: Ancoragraptus bulmani, Clonograptus magnificus, C . cf. C. multiplex, C . cf. C. rigidus, Hunnegraptus copiosus, Kiaerograptus ? bulmani and K ? kutchini sp. nov. |
format |
Article in Journal/Newspaper |
author |
JACKSON, D. E. LENZ, A. C. |
author_facet |
JACKSON, D. E. LENZ, A. C. |
author_sort |
JACKSON, D. E. |
title |
Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada |
title_short |
Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada |
title_full |
Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada |
title_fullStr |
Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada |
title_full_unstemmed |
Taxonomic and biostratigraphical significance of the Tremadoc graptolite fauna from northern Yukon Territory, Canada |
title_sort |
taxonomic and biostratigraphical significance of the tremadoc graptolite fauna from northern yukon territory, canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
2003 |
url |
http://dx.doi.org/10.1017/s0016756802007227 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756802007227 |
long_lat |
ENVELOPE(-135.005,-135.005,67.000,67.000) ENVELOPE(-134.938,-134.938,66.833,66.833) |
geographic |
Yukon Canada Peel River Road River |
geographic_facet |
Yukon Canada Peel River Road River |
genre |
Peel River Yukon |
genre_facet |
Peel River Yukon |
op_source |
Geological Magazine volume 140, issue 2, page 131-156 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756802007227 |
container_title |
Geological Magazine |
container_volume |
140 |
container_issue |
2 |
container_start_page |
131 |
op_container_end_page |
156 |
_version_ |
1792503994691616768 |