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The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China

Cambrian marine ecosystems were dominated by arthropods, and more specifically artiopods. Aglaspidids represent an atypical group amongst them, not the least because they evolved and rapidly diversified during the late Cambrian, a time interval between the two diversification events of the Early Pal...

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Autores principales: Lerosey-Aubril, Rudy, Zhu, Xuejian, Ortega-Hernández, Javier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593897/
https://www.ncbi.nlm.nih.gov/pubmed/28894246
http://dx.doi.org/10.1038/s41598-017-11610-5
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author Lerosey-Aubril, Rudy
Zhu, Xuejian
Ortega-Hernández, Javier
author_facet Lerosey-Aubril, Rudy
Zhu, Xuejian
Ortega-Hernández, Javier
author_sort Lerosey-Aubril, Rudy
collection PubMed
description Cambrian marine ecosystems were dominated by arthropods, and more specifically artiopods. Aglaspidids represent an atypical group amongst them, not the least because they evolved and rapidly diversified during the late Cambrian, a time interval between the two diversification events of the Early Palaeozoic. Recent phylogenetic analyses have retrieved aglaspidids within the Vicissicaudata, a potentially important, but difficult to define clade of artiopods. Here we describe a new aglaspidid from the Furongian Guole Konservat-Lagerstätte of South China. This taxon displays a pretelsonic segment bearing non-walking appendages, features as-yet known in all vicissicaudatans, but aglaspidids. A new comprehensive phylogenetic analysis provides strong support for the legitimacy of a monophyletic clade Vicissicaudata, and demonstrates the pertinence of new characters to define Aglaspidida. It also motivates important changes to the systematics of the phylum, including the elevation of Artiopoda to the rank of subphylum, and the establishment of a new superclass Vicissicaudata and a new aglaspidid family Tremaglaspididae. Two diversification pulses can be recognized in the early history of artiopods – one in the early Cambrian (trilobitomorphs) and the other in the late Cambrian (vicissicaudatans). The discrepancy between this pattern and that traditionally depicted for marine invertebrates in the Early Palaeozoic is discussed.
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spelling pubmed-55938972017-09-13 The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China Lerosey-Aubril, Rudy Zhu, Xuejian Ortega-Hernández, Javier Sci Rep Article Cambrian marine ecosystems were dominated by arthropods, and more specifically artiopods. Aglaspidids represent an atypical group amongst them, not the least because they evolved and rapidly diversified during the late Cambrian, a time interval between the two diversification events of the Early Palaeozoic. Recent phylogenetic analyses have retrieved aglaspidids within the Vicissicaudata, a potentially important, but difficult to define clade of artiopods. Here we describe a new aglaspidid from the Furongian Guole Konservat-Lagerstätte of South China. This taxon displays a pretelsonic segment bearing non-walking appendages, features as-yet known in all vicissicaudatans, but aglaspidids. A new comprehensive phylogenetic analysis provides strong support for the legitimacy of a monophyletic clade Vicissicaudata, and demonstrates the pertinence of new characters to define Aglaspidida. It also motivates important changes to the systematics of the phylum, including the elevation of Artiopoda to the rank of subphylum, and the establishment of a new superclass Vicissicaudata and a new aglaspidid family Tremaglaspididae. Two diversification pulses can be recognized in the early history of artiopods – one in the early Cambrian (trilobitomorphs) and the other in the late Cambrian (vicissicaudatans). The discrepancy between this pattern and that traditionally depicted for marine invertebrates in the Early Palaeozoic is discussed. Nature Publishing Group UK 2017-09-11 /pmc/articles/PMC5593897/ /pubmed/28894246 http://dx.doi.org/10.1038/s41598-017-11610-5 Text en © The Author(s) 2017 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
Lerosey-Aubril, Rudy
Zhu, Xuejian
Ortega-Hernández, Javier
The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China
title The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China
title_full The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China
title_fullStr The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China
title_full_unstemmed The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China
title_short The Vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the Furongian of China
title_sort vicissicaudata revisited – insights from a new aglaspidid arthropod with caudal appendages from the furongian of china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593897/
https://www.ncbi.nlm.nih.gov/pubmed/28894246
http://dx.doi.org/10.1038/s41598-017-11610-5
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