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New opabiniid diversifies the weirdest wonders of the euarthropod stem group
Once considered ‘weird wonders’ of the Cambrian, the emblematic Burgess Shale animals Anomalocaris and Opabinia are now recognized as lower stem-group euarthropods and have provided crucial data for constraining the polarity of key morphological characters in the group. Anomalocaris and its relative...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8826304/ https://www.ncbi.nlm.nih.gov/pubmed/35135344 http://dx.doi.org/10.1098/rspb.2021.2093 |
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author | Pates, Stephen Wolfe, Joanna M. Lerosey-Aubril, Rudy Daley, Allison C. Ortega-Hernández, Javier |
author_facet | Pates, Stephen Wolfe, Joanna M. Lerosey-Aubril, Rudy Daley, Allison C. Ortega-Hernández, Javier |
author_sort | Pates, Stephen |
collection | PubMed |
description | Once considered ‘weird wonders’ of the Cambrian, the emblematic Burgess Shale animals Anomalocaris and Opabinia are now recognized as lower stem-group euarthropods and have provided crucial data for constraining the polarity of key morphological characters in the group. Anomalocaris and its relatives (radiodonts) had worldwide distribution and survived until at least the Devonian. However, despite intense study, Opabinia remains the only formally described opabiniid to date. Here we reinterpret a fossil from the Wheeler Formation of Utah as a new opabiniid, Utaurora comosa nov. gen. et sp. By visualizing the sample of phylogenetic topologies in treespace, our results fortify support for the position of U. comosa beyond the nodal support traditionally applied. Our phylogenetic evidence expands opabiniids to multiple Cambrian stages. Our results underscore the power of treespace visualization for resolving imperfectly preserved fossils and expanding the known diversity and spatio-temporal ranges within the euarthropod lower stem group. |
format | Online Article Text |
id | pubmed-8826304 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-88263042022-02-10 New opabiniid diversifies the weirdest wonders of the euarthropod stem group Pates, Stephen Wolfe, Joanna M. Lerosey-Aubril, Rudy Daley, Allison C. Ortega-Hernández, Javier Proc Biol Sci Palaeobiology Once considered ‘weird wonders’ of the Cambrian, the emblematic Burgess Shale animals Anomalocaris and Opabinia are now recognized as lower stem-group euarthropods and have provided crucial data for constraining the polarity of key morphological characters in the group. Anomalocaris and its relatives (radiodonts) had worldwide distribution and survived until at least the Devonian. However, despite intense study, Opabinia remains the only formally described opabiniid to date. Here we reinterpret a fossil from the Wheeler Formation of Utah as a new opabiniid, Utaurora comosa nov. gen. et sp. By visualizing the sample of phylogenetic topologies in treespace, our results fortify support for the position of U. comosa beyond the nodal support traditionally applied. Our phylogenetic evidence expands opabiniids to multiple Cambrian stages. Our results underscore the power of treespace visualization for resolving imperfectly preserved fossils and expanding the known diversity and spatio-temporal ranges within the euarthropod lower stem group. The Royal Society 2022-02-09 2022-02-09 /pmc/articles/PMC8826304/ /pubmed/35135344 http://dx.doi.org/10.1098/rspb.2021.2093 Text en © 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Palaeobiology Pates, Stephen Wolfe, Joanna M. Lerosey-Aubril, Rudy Daley, Allison C. Ortega-Hernández, Javier New opabiniid diversifies the weirdest wonders of the euarthropod stem group |
title | New opabiniid diversifies the weirdest wonders of the euarthropod stem group |
title_full | New opabiniid diversifies the weirdest wonders of the euarthropod stem group |
title_fullStr | New opabiniid diversifies the weirdest wonders of the euarthropod stem group |
title_full_unstemmed | New opabiniid diversifies the weirdest wonders of the euarthropod stem group |
title_short | New opabiniid diversifies the weirdest wonders of the euarthropod stem group |
title_sort | new opabiniid diversifies the weirdest wonders of the euarthropod stem group |
topic | Palaeobiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8826304/ https://www.ncbi.nlm.nih.gov/pubmed/35135344 http://dx.doi.org/10.1098/rspb.2021.2093 |
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