A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus
Abstract The palaeopascichnids are a relatively abundant component of the Ediacara biota. The eponymous Palaeopascichnus delicatus consists of serially arranged, millimetre‐scale allantoid chambers that have variously been interpreted as evidence of movement, feeding traces, and body fossils of vari...
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crwiley:10.1002/spp2.1290 2024-06-02T08:10:44+00:00 A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus Hawco, Jessica B. Kenchington, Charlotte G. McIlroy, Duncan Smith, Andrew Natural Sciences and Engineering Research Council of Canada 2019 http://dx.doi.org/10.1002/spp2.1290 https://onlinelibrary.wiley.com/doi/pdf/10.1002/spp2.1290 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/spp2.1290 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Papers in Palaeontology volume 7, issue 2, page 657-673 ISSN 2056-2799 2056-2802 journal-article 2019 crwiley https://doi.org/10.1002/spp2.1290 2024-05-03T12:01:36Z Abstract The palaeopascichnids are a relatively abundant component of the Ediacara biota. The eponymous Palaeopascichnus delicatus consists of serially arranged, millimetre‐scale allantoid chambers that have variously been interpreted as evidence of movement, feeding traces, and body fossils of various affinities. Palaeopascichnus has most recently been compared to the deep‐marine Xenophyophora, an extant group of large, benthic protists characterized by their greater size and possession of stercomata within their cells. The morphometric variation in palaeopascichnids is assessed using material from the Avalon Peninsula of Newfoundland, Canada. The application of quantitative morphological analysis to the study of over 90 well‐preserved specimens of Palaeopascichnus demonstrates considerable variation in chamber shape and size, and in behaviour along the chamber series. The combination of morphometric and multivariate statistical analysis allows the recognition of natural groups within the dataset, thereby demonstrating variability within and between morphospecies. Morphological comparisons of fossil palaeopascichnids with fossil and extant protistan taxa support the proposed protistan affinity of Palaeopascichnus , allowing further resolution regarding the diversity and disparity within this prominent element of the later Ediacara biotas of Gondwana and Baltica. Article in Journal/Newspaper Newfoundland Wiley Online Library Canada Papers in Palaeontology 7 2 657 673 |
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Wiley Online Library |
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English |
description |
Abstract The palaeopascichnids are a relatively abundant component of the Ediacara biota. The eponymous Palaeopascichnus delicatus consists of serially arranged, millimetre‐scale allantoid chambers that have variously been interpreted as evidence of movement, feeding traces, and body fossils of various affinities. Palaeopascichnus has most recently been compared to the deep‐marine Xenophyophora, an extant group of large, benthic protists characterized by their greater size and possession of stercomata within their cells. The morphometric variation in palaeopascichnids is assessed using material from the Avalon Peninsula of Newfoundland, Canada. The application of quantitative morphological analysis to the study of over 90 well‐preserved specimens of Palaeopascichnus demonstrates considerable variation in chamber shape and size, and in behaviour along the chamber series. The combination of morphometric and multivariate statistical analysis allows the recognition of natural groups within the dataset, thereby demonstrating variability within and between morphospecies. Morphological comparisons of fossil palaeopascichnids with fossil and extant protistan taxa support the proposed protistan affinity of Palaeopascichnus , allowing further resolution regarding the diversity and disparity within this prominent element of the later Ediacara biotas of Gondwana and Baltica. |
author2 |
Smith, Andrew Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Hawco, Jessica B. Kenchington, Charlotte G. McIlroy, Duncan |
spellingShingle |
Hawco, Jessica B. Kenchington, Charlotte G. McIlroy, Duncan A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus |
author_facet |
Hawco, Jessica B. Kenchington, Charlotte G. McIlroy, Duncan |
author_sort |
Hawco, Jessica B. |
title |
A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus |
title_short |
A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus |
title_full |
A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus |
title_fullStr |
A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus |
title_full_unstemmed |
A quantitative and statistical discrimination of morphotaxa within the Ediacaran genus Palaeopascichnus |
title_sort |
quantitative and statistical discrimination of morphotaxa within the ediacaran genus palaeopascichnus |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/spp2.1290 https://onlinelibrary.wiley.com/doi/pdf/10.1002/spp2.1290 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/spp2.1290 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Papers in Palaeontology volume 7, issue 2, page 657-673 ISSN 2056-2799 2056-2802 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/spp2.1290 |
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Papers in Palaeontology |
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2 |
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