Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes
peer reviewed The Mesoproterozoic is an important era for the development of eukaryotic organisms in oceans. The earliest unambiguous eukaryotic microfossils are reported in late Paleoproterozoic shales from China and Australia. During the Mesoproterozoic, eukaryotes diversified in taxonomy, metabol...
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Cambridge University Press
2021
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Online Access: | https://orbi.uliege.be/handle/2268/263678 https://doi.org/10.1017/jpa.2021.45 |
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ftorbi:oai:orbi.ulg.ac.be:2268/263678 2024-04-14T08:08:01+00:00 Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes Loron, Corentin Halverson, Galen Rainbird, Robert Skulski, Tom Turner, Elizabeth Javaux, Emmanuelle 2021 https://orbi.uliege.be/handle/2268/263678 https://doi.org/10.1017/jpa.2021.45 en eng Cambridge University Press urn:issn:0022-3360 https://orbi.uliege.be/handle/2268/263678 info:hdl:2268/263678 doi:10.1017/jpa.2021.45 scopus-id:2-s2.0-85109419577 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Journal of Paleontology (2021) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2021 ftorbi https://doi.org/10.1017/jpa.2021.45 2024-03-27T14:55:22Z peer reviewed The Mesoproterozoic is an important era for the development of eukaryotic organisms in oceans. The earliest unambiguous eukaryotic microfossils are reported in late Paleoproterozoic shales from China and Australia. During the Mesoproterozoic, eukaryotes diversified in taxonomy, metabolism, and ecology, with the advent of eukaryotic photosynthesis, osmotrophy, multicellularity, and predation. Despite these biological innovations, their fossil record is scarce before the late Mesoproterozoic. Here, we document an assemblage of organic-walled microfossils from the 1590–1270 Ma Dismal Lakes Group in Canada. The assemblage comprises 25 taxa, including 11 morphospecies identified as eukaryotes, a relatively high diversity for this period. We also report one new species, Dictyosphaera smaugi new species, and one unnamed taxon. The diversity of eukaryotic forms in this succession is comparable to slightly older assemblages from China and is higher than worldwide contemporaneous assemblages and supports the hypothesis of an earlier diversification of eukaryotes in the Mesoproterozoic. Article in Journal/Newspaper Arctic University of Liège: ORBi (Open Repository and Bibliography) Arctic Canada Dismal Lakes ENVELOPE(-117.120,-117.120,67.434,67.434) Journal of Paleontology 95 6 1113 1137 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Loron, Corentin Halverson, Galen Rainbird, Robert Skulski, Tom Turner, Elizabeth Javaux, Emmanuelle Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed The Mesoproterozoic is an important era for the development of eukaryotic organisms in oceans. The earliest unambiguous eukaryotic microfossils are reported in late Paleoproterozoic shales from China and Australia. During the Mesoproterozoic, eukaryotes diversified in taxonomy, metabolism, and ecology, with the advent of eukaryotic photosynthesis, osmotrophy, multicellularity, and predation. Despite these biological innovations, their fossil record is scarce before the late Mesoproterozoic. Here, we document an assemblage of organic-walled microfossils from the 1590–1270 Ma Dismal Lakes Group in Canada. The assemblage comprises 25 taxa, including 11 morphospecies identified as eukaryotes, a relatively high diversity for this period. We also report one new species, Dictyosphaera smaugi new species, and one unnamed taxon. The diversity of eukaryotic forms in this succession is comparable to slightly older assemblages from China and is higher than worldwide contemporaneous assemblages and supports the hypothesis of an earlier diversification of eukaryotes in the Mesoproterozoic. |
format |
Article in Journal/Newspaper |
author |
Loron, Corentin Halverson, Galen Rainbird, Robert Skulski, Tom Turner, Elizabeth Javaux, Emmanuelle |
author_facet |
Loron, Corentin Halverson, Galen Rainbird, Robert Skulski, Tom Turner, Elizabeth Javaux, Emmanuelle |
author_sort |
Loron, Corentin |
title |
Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes |
title_short |
Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes |
title_full |
Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes |
title_fullStr |
Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes |
title_full_unstemmed |
Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes |
title_sort |
shale-hosted biota from the dismal lakes group in arctic canada supports an early mesoproterozoic diversification of eukaryotes |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
https://orbi.uliege.be/handle/2268/263678 https://doi.org/10.1017/jpa.2021.45 |
long_lat |
ENVELOPE(-117.120,-117.120,67.434,67.434) |
geographic |
Arctic Canada Dismal Lakes |
geographic_facet |
Arctic Canada Dismal Lakes |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Paleontology (2021) |
op_relation |
urn:issn:0022-3360 https://orbi.uliege.be/handle/2268/263678 info:hdl:2268/263678 doi:10.1017/jpa.2021.45 scopus-id:2-s2.0-85109419577 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1017/jpa.2021.45 |
container_title |
Journal of Paleontology |
container_volume |
95 |
container_issue |
6 |
container_start_page |
1113 |
op_container_end_page |
1137 |
_version_ |
1796305456173416448 |