Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia
Correlation of lower Cambrian strata is often confounded by provincialism of key fauna. The widespread occurrence of themicromollusc Watsonella crosbyi Grabau, 1900 is therefore an important biostratigraphic signpost with potential for international correlation of lower Cambrian successions. Previou...
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Enheten för paleobiologi
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ftnrm:oai:DiVA.org:nrm-1884 2023-05-15T17:22:34+02:00 Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia Jacquet, Sarah, M. Brougham, Thomas Skovsted, Christian Jago, James, B. Laurie, John, R. Betts, Marissa, J. Topper, Timothy, P. Brock, Glenn, A. 2016 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-1884 https://doi.org/10.1017/S0016756816000704 eng eng Enheten för paleobiologi Geological Magazine, 0016-7568, 2016, s. 1-17 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-1884 doi:doi.org/10.1017/S0016756816000704 info:eu-repo/semantics/embargoedAccess Normanville Group Aldanella biostratigraphy Sunnaginia Stansbury Basin Geology Geologi Article in journal info:eu-repo/semantics/article text 2016 ftnrm https://doi.org/10.1017/S0016756816000704 2021-10-08T07:21:17Z Correlation of lower Cambrian strata is often confounded by provincialism of key fauna. The widespread occurrence of themicromollusc Watsonella crosbyi Grabau, 1900 is therefore an important biostratigraphic signpost with potential for international correlation of lower Cambrian successions. Previous correlations of W. crosbyi from Australia (Normanville Group) suggested an Atdabanian- to Botoman-equivalent age. However, in the upper part of the Mount Terrible Formation, stratigraphic ranges of W. crosbyi and Aldanella sp. cf. golubevi overlap prior to the incoming of vertically burrowed ‘piperock’, which is indicative of an age no earlier than Cambrian Stage 2. The stratigraphic range of W. crosbyi in the Normanville Group, South Australia correlates with the ranges of the taxon in China, France, Mongolia and Siberia (though not Newfoundland). The new Australian data add further support for considering the first occurrence of W. crosbyi a good potential candidate for defining the base of Cambrian Stage 2. The stratigraphic range of W. crosbyi through the lower Cambrian Normanville Group has been determined based on collections from measured sections. Although rare, W. crosbyi is part of an assemblage of micromolluscs including Bemella sp., Parailsanella sp. cf. murenica and a sinistral form of Aldanella (A. sp. cf. A. golubevi). Other fauna present include Australohalkieria sp., Eremactis mawsoni, chancelloriids and Cupitheca sp. Article in Journal/Newspaper Newfoundland Siberia Swedish Museum of Natural History: Publications (DiVA) Geological Magazine 154 5 1088 1104 |
institution |
Open Polar |
collection |
Swedish Museum of Natural History: Publications (DiVA) |
op_collection_id |
ftnrm |
language |
English |
topic |
Normanville Group Aldanella biostratigraphy Sunnaginia Stansbury Basin Geology Geologi |
spellingShingle |
Normanville Group Aldanella biostratigraphy Sunnaginia Stansbury Basin Geology Geologi Jacquet, Sarah, M. Brougham, Thomas Skovsted, Christian Jago, James, B. Laurie, John, R. Betts, Marissa, J. Topper, Timothy, P. Brock, Glenn, A. Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia |
topic_facet |
Normanville Group Aldanella biostratigraphy Sunnaginia Stansbury Basin Geology Geologi |
description |
Correlation of lower Cambrian strata is often confounded by provincialism of key fauna. The widespread occurrence of themicromollusc Watsonella crosbyi Grabau, 1900 is therefore an important biostratigraphic signpost with potential for international correlation of lower Cambrian successions. Previous correlations of W. crosbyi from Australia (Normanville Group) suggested an Atdabanian- to Botoman-equivalent age. However, in the upper part of the Mount Terrible Formation, stratigraphic ranges of W. crosbyi and Aldanella sp. cf. golubevi overlap prior to the incoming of vertically burrowed ‘piperock’, which is indicative of an age no earlier than Cambrian Stage 2. The stratigraphic range of W. crosbyi in the Normanville Group, South Australia correlates with the ranges of the taxon in China, France, Mongolia and Siberia (though not Newfoundland). The new Australian data add further support for considering the first occurrence of W. crosbyi a good potential candidate for defining the base of Cambrian Stage 2. The stratigraphic range of W. crosbyi through the lower Cambrian Normanville Group has been determined based on collections from measured sections. Although rare, W. crosbyi is part of an assemblage of micromolluscs including Bemella sp., Parailsanella sp. cf. murenica and a sinistral form of Aldanella (A. sp. cf. A. golubevi). Other fauna present include Australohalkieria sp., Eremactis mawsoni, chancelloriids and Cupitheca sp. |
format |
Article in Journal/Newspaper |
author |
Jacquet, Sarah, M. Brougham, Thomas Skovsted, Christian Jago, James, B. Laurie, John, R. Betts, Marissa, J. Topper, Timothy, P. Brock, Glenn, A. |
author_facet |
Jacquet, Sarah, M. Brougham, Thomas Skovsted, Christian Jago, James, B. Laurie, John, R. Betts, Marissa, J. Topper, Timothy, P. Brock, Glenn, A. |
author_sort |
Jacquet, Sarah, M. |
title |
Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia |
title_short |
Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia |
title_full |
Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia |
title_fullStr |
Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia |
title_full_unstemmed |
Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia |
title_sort |
watsonella crosbyi from the lower cambrian (terreneuvian, stage 2) normanville group in south australia |
publisher |
Enheten för paleobiologi |
publishDate |
2016 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-1884 https://doi.org/10.1017/S0016756816000704 |
genre |
Newfoundland Siberia |
genre_facet |
Newfoundland Siberia |
op_relation |
Geological Magazine, 0016-7568, 2016, s. 1-17 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-1884 doi:doi.org/10.1017/S0016756816000704 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1017/S0016756816000704 |
container_title |
Geological Magazine |
container_volume |
154 |
container_issue |
5 |
container_start_page |
1088 |
op_container_end_page |
1104 |
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1766109295981625344 |