Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada
The Early Devonian graptolite fauna of the Arctic Islands comprises the highest species content (17 species) in the world. In spite of this richness, no new species have been recognized; instead already-existing species, scattered around the then-known continents, suggest that relatively complete co...
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crcansciencepubl:10.1139/cjes-2013-0057 2024-10-13T14:04:32+00:00 Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada Lenz, Alfred C. Jin, Jisuo 2013 http://dx.doi.org/10.1139/cjes-2013-0057 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjes-2013-0057 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjes-2013-0057 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 50, issue 11, page 1097-1115 ISSN 0008-4077 1480-3313 journal-article 2013 crcansciencepubl https://doi.org/10.1139/cjes-2013-0057 2024-09-27T04:07:25Z The Early Devonian graptolite fauna of the Arctic Islands comprises the highest species content (17 species) in the world. In spite of this richness, no new species have been recognized; instead already-existing species, scattered around the then-known continents, suggest that relatively complete cosmopolitanism held sway for graptolites. Canadian Arctic biozonation is very similar to schemes elsewhere, consisting of the uniformis and hercynicus biozones in the Lochkovian, falcarius in the lower Pragian, and an expanded yukonensis Biozone in the upper Pragian and the lower Emsian. Three genera and 17 species are recognized: “Monograptus” (microdon cf. microdon, microdon curvatus); Neomonograptus (cf. atopus, aequabilis, bardoensis, falcarius, notoaequabilis); and Uncinatograptus (birchensis, craigensis, hercynicus, langgunensis, parangustidens, subhercynicus, telleri, thomasi, uniformis, yukonensis). Article in Journal/Newspaper Arctic Canadian Science Publishing Arctic Canada Canadian Journal of Earth Sciences 50 11 1097 1115 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
The Early Devonian graptolite fauna of the Arctic Islands comprises the highest species content (17 species) in the world. In spite of this richness, no new species have been recognized; instead already-existing species, scattered around the then-known continents, suggest that relatively complete cosmopolitanism held sway for graptolites. Canadian Arctic biozonation is very similar to schemes elsewhere, consisting of the uniformis and hercynicus biozones in the Lochkovian, falcarius in the lower Pragian, and an expanded yukonensis Biozone in the upper Pragian and the lower Emsian. Three genera and 17 species are recognized: “Monograptus” (microdon cf. microdon, microdon curvatus); Neomonograptus (cf. atopus, aequabilis, bardoensis, falcarius, notoaequabilis); and Uncinatograptus (birchensis, craigensis, hercynicus, langgunensis, parangustidens, subhercynicus, telleri, thomasi, uniformis, yukonensis). |
author2 |
Jin, Jisuo |
format |
Article in Journal/Newspaper |
author |
Lenz, Alfred C. |
spellingShingle |
Lenz, Alfred C. Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada |
author_facet |
Lenz, Alfred C. |
author_sort |
Lenz, Alfred C. |
title |
Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada |
title_short |
Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada |
title_full |
Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada |
title_fullStr |
Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada |
title_full_unstemmed |
Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada |
title_sort |
early devonian graptolites and graptolite biostratigraphy, arctic islands, canada |
publisher |
Canadian Science Publishing |
publishDate |
2013 |
url |
http://dx.doi.org/10.1139/cjes-2013-0057 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjes-2013-0057 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjes-2013-0057 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Canadian Journal of Earth Sciences volume 50, issue 11, page 1097-1115 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjes-2013-0057 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
50 |
container_issue |
11 |
container_start_page |
1097 |
op_container_end_page |
1115 |
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1812809810899369984 |