Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications
The taxonomy of Discomesites and Estaingia from the Lower Cambrian Cymbric Vale Formation of western New South Wales is revised. Discomesites is regarded as a valid subgenus of Pagetides. Pagetides (Discomesites) fragum is considered a senior subjective synonym of P. (D.) lunatulus. Pagetides (Disco...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Linnean Society of New South Wales
2005
|
Subjects: | |
Online Access: | https://hdl.handle.net/1959.11/5187 |
id |
ftunivnewengland:oai:rune.une.edu.au:1959.11/5187 |
---|---|
record_format |
openpolar |
spelling |
ftunivnewengland:oai:rune.une.edu.au:1959.11/5187 2023-08-27T04:04:31+02:00 Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications Paterson, John R School of Environmental and Rural Science orcid:0000-0003-2947-3912 2005 https://hdl.handle.net/1959.11/5187 en eng Linnean Society of New South Wales https://hdl.handle.net/1959.11/5187 une:5305 http://trove.nla.gov.au/work/11271281 Biogeography and Phylogeography Palaeontology (incl Palynology) Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy) Journal Article 2005 ftunivnewengland 2023-08-10T18:42:24Z The taxonomy of Discomesites and Estaingia from the Lower Cambrian Cymbric Vale Formation of western New South Wales is revised. Discomesites is regarded as a valid subgenus of Pagetides. Pagetides (Discomesites) fragum is considered a senior subjective synonym of P. (D.) lunatulus. Pagetides (Discomesites) spinosus from the Shackleton Limestone in the Holyoake Range, Transantarctic Mountains, is considered to be a junior subjective synonym of P. (D.) fragum. Estaingia cerastes from the Cymbric Vale Formation is considered to be synonymous with Hsuaspis cf. H. bilobata from the Shackleton Limestone. The Cymbric Vale Formation trilobite fauna is of late Early Cambrian (late Botoman) age, equivalent to the Pararaia janeae Zone of South Australia, based on correlation of the Syringocnema favus archaeocyathan fauna. Absolute ages of recently dated tuffs from the Cymbric Vale and Billy Creek Formations are questioned, based on new information regarding the stratigraphic position of the Cymbric Vale Formation tuff in relation to archaeocyathan and trilobite biostratigraphy. The co-occurrence of Pagetides (Discomesites) fragum and Estaingia cerastes in the upper part of the Cymbric Vale Formation and in the Shackleton Limestone represents the first species-level correlation between the Lower Cambrian of Australia and Antarctica using trilobites. The distribution of these trilobite species, in association with the Syringocnema favus archaeocyathan fauna, provides supporting evidence that Australia and Antarctica were connected by a continuous carbonate-detrital shelf during the late Early Cambrian (mid-late Botoman),allowing faunal exchange between these regions. Article in Journal/Newspaper Antarc* Antarctica Research UNE - University of New England at Armidale, NSW Australia Holyoake Range ENVELOPE(160.000,160.000,-82.217,-82.217) Shackleton Transantarctic Mountains |
institution |
Open Polar |
collection |
Research UNE - University of New England at Armidale, NSW Australia |
op_collection_id |
ftunivnewengland |
language |
English |
topic |
Biogeography and Phylogeography Palaeontology (incl Palynology) Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy) |
spellingShingle |
Biogeography and Phylogeography Palaeontology (incl Palynology) Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy) Paterson, John R School of Environmental and Rural Science orcid:0000-0003-2947-3912 Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications |
topic_facet |
Biogeography and Phylogeography Palaeontology (incl Palynology) Stratigraphy (incl Biostratigraphy and Sequence Stratigraphy) |
description |
The taxonomy of Discomesites and Estaingia from the Lower Cambrian Cymbric Vale Formation of western New South Wales is revised. Discomesites is regarded as a valid subgenus of Pagetides. Pagetides (Discomesites) fragum is considered a senior subjective synonym of P. (D.) lunatulus. Pagetides (Discomesites) spinosus from the Shackleton Limestone in the Holyoake Range, Transantarctic Mountains, is considered to be a junior subjective synonym of P. (D.) fragum. Estaingia cerastes from the Cymbric Vale Formation is considered to be synonymous with Hsuaspis cf. H. bilobata from the Shackleton Limestone. The Cymbric Vale Formation trilobite fauna is of late Early Cambrian (late Botoman) age, equivalent to the Pararaia janeae Zone of South Australia, based on correlation of the Syringocnema favus archaeocyathan fauna. Absolute ages of recently dated tuffs from the Cymbric Vale and Billy Creek Formations are questioned, based on new information regarding the stratigraphic position of the Cymbric Vale Formation tuff in relation to archaeocyathan and trilobite biostratigraphy. The co-occurrence of Pagetides (Discomesites) fragum and Estaingia cerastes in the upper part of the Cymbric Vale Formation and in the Shackleton Limestone represents the first species-level correlation between the Lower Cambrian of Australia and Antarctica using trilobites. The distribution of these trilobite species, in association with the Syringocnema favus archaeocyathan fauna, provides supporting evidence that Australia and Antarctica were connected by a continuous carbonate-detrital shelf during the late Early Cambrian (mid-late Botoman),allowing faunal exchange between these regions. |
format |
Article in Journal/Newspaper |
author |
Paterson, John R School of Environmental and Rural Science orcid:0000-0003-2947-3912 |
author_facet |
Paterson, John R School of Environmental and Rural Science orcid:0000-0003-2947-3912 |
author_sort |
Paterson, John R |
title |
Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications |
title_short |
Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications |
title_full |
Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications |
title_fullStr |
Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications |
title_full_unstemmed |
Revision of 'Discomesites' and 'Estaingia' (Trilobita) from the Lower Cambrian Cymbric Vale Formation, Western New South Wales: Taxonomic, Biostratigraphic and Biogeographic Implications |
title_sort |
revision of 'discomesites' and 'estaingia' (trilobita) from the lower cambrian cymbric vale formation, western new south wales: taxonomic, biostratigraphic and biogeographic implications |
publisher |
Linnean Society of New South Wales |
publishDate |
2005 |
url |
https://hdl.handle.net/1959.11/5187 |
long_lat |
ENVELOPE(160.000,160.000,-82.217,-82.217) |
geographic |
Holyoake Range Shackleton Transantarctic Mountains |
geographic_facet |
Holyoake Range Shackleton Transantarctic Mountains |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
http://trove.nla.gov.au/work/11271281 |
op_relation |
https://hdl.handle.net/1959.11/5187 une:5305 |
_version_ |
1775351817926868992 |