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Adding a new dimension to investigations of early radiolarian evolution

Knowledge of the detailed architecture of the earliest radiolarian microfossils is key to resolving the evolution and systematics of this important group of marine protozoans. Non-destructive methods for observing the complexity within the internal structures of their siliceous skeletons have long e...

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Autores principales: Kachovich, Sarah, Sheng, Jiani, Aitchison, Jonathan C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6478871/
https://www.ncbi.nlm.nih.gov/pubmed/31015493
http://dx.doi.org/10.1038/s41598-019-42771-0
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author Kachovich, Sarah
Sheng, Jiani
Aitchison, Jonathan C.
author_facet Kachovich, Sarah
Sheng, Jiani
Aitchison, Jonathan C.
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description Knowledge of the detailed architecture of the earliest radiolarian microfossils is key to resolving the evolution and systematics of this important group of marine protozoans. Non-destructive methods for observing the complexity within the internal structures of their siliceous skeletons have long eluded paleontologists. By developing methodologies that overcome some limitations of existing micro-computed tomography (micro-CT) we demonstrate a technique with potential to provide new insight into their evolution. Using 3D micro-CT data to generate models for six well-preserved siliceous radiolarian skeletons from the Middle Cambrian Inca Formation in far north Queensland, Australia and the Middle Ordovician Piccadilly Formation, in western Newfoundland, Canada, we can reconstruct phylogenetic relationships amongst some of the earliest radiolarians. Better knowledge of early radiolarian morphologies clarifies the vital function of internal structures and hierarchical diagnosis across a range of taxonomic affiliations.
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spelling pubmed-64788712019-05-03 Adding a new dimension to investigations of early radiolarian evolution Kachovich, Sarah Sheng, Jiani Aitchison, Jonathan C. Sci Rep Article Knowledge of the detailed architecture of the earliest radiolarian microfossils is key to resolving the evolution and systematics of this important group of marine protozoans. Non-destructive methods for observing the complexity within the internal structures of their siliceous skeletons have long eluded paleontologists. By developing methodologies that overcome some limitations of existing micro-computed tomography (micro-CT) we demonstrate a technique with potential to provide new insight into their evolution. Using 3D micro-CT data to generate models for six well-preserved siliceous radiolarian skeletons from the Middle Cambrian Inca Formation in far north Queensland, Australia and the Middle Ordovician Piccadilly Formation, in western Newfoundland, Canada, we can reconstruct phylogenetic relationships amongst some of the earliest radiolarians. Better knowledge of early radiolarian morphologies clarifies the vital function of internal structures and hierarchical diagnosis across a range of taxonomic affiliations. Nature Publishing Group UK 2019-04-23 /pmc/articles/PMC6478871/ /pubmed/31015493 http://dx.doi.org/10.1038/s41598-019-42771-0 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Kachovich, Sarah
Sheng, Jiani
Aitchison, Jonathan C.
Adding a new dimension to investigations of early radiolarian evolution
title Adding a new dimension to investigations of early radiolarian evolution
title_full Adding a new dimension to investigations of early radiolarian evolution
title_fullStr Adding a new dimension to investigations of early radiolarian evolution
title_full_unstemmed Adding a new dimension to investigations of early radiolarian evolution
title_short Adding a new dimension to investigations of early radiolarian evolution
title_sort adding a new dimension to investigations of early radiolarian evolution
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6478871/
https://www.ncbi.nlm.nih.gov/pubmed/31015493
http://dx.doi.org/10.1038/s41598-019-42771-0
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