A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)

Abstract Like other soft-bodied organisms, ctenophores (comb jellies) produce fossils only under exceptional taphonomic conditions. Here, we present the first record of a Late Devonian ctenophore from the Escuminac Formation from Miguasha in eastern Canada. Based on the 18-fold symmetry of this disc...

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Autores principales:	Christian Klug, Johanne Kerr, Michael S. Y. Lee, Richard Cloutier
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7415ae8b90e14e80b98594f31741704c
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spelling	oai:doaj.org-article:7415ae8b90e14e80b98594f31741704c2021-12-02T18:14:23ZA late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)10.1038/s41598-021-98362-52045-2322https://doaj.org/article/7415ae8b90e14e80b98594f31741704c2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98362-5https://doaj.org/toc/2045-2322Abstract Like other soft-bodied organisms, ctenophores (comb jellies) produce fossils only under exceptional taphonomic conditions. Here, we present the first record of a Late Devonian ctenophore from the Escuminac Formation from Miguasha in eastern Canada. Based on the 18-fold symmetry of this disc-shaped fossil, we assign it to the total-group Ctenophora. Our phylogenetic analyses suggest that the new taxon Daihuoides jakobvintheri gen. et sp. nov. falls near Cambrian stem ctenophores such as ‘dinomischids’ and 'scleroctenophorans'. Accordingly, Daihuoides is a Lazarus-taxon, which post-dates its older relatives by over 140 million years, and overlaps temporally with modern ctenophores, whose oldest representatives are known from the Early Devonian. Our analyses also indicate that the fossil record of ctenophores does not provide strong evidence for or against the phylogenomic hypothesis that ctenophores are sister to all other metazoans.Christian KlugJohanne KerrMichael S. Y. LeeRichard CloutierNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Christian Klug Johanne Kerr Michael S. Y. Lee Richard Cloutier A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)
description	Abstract Like other soft-bodied organisms, ctenophores (comb jellies) produce fossils only under exceptional taphonomic conditions. Here, we present the first record of a Late Devonian ctenophore from the Escuminac Formation from Miguasha in eastern Canada. Based on the 18-fold symmetry of this disc-shaped fossil, we assign it to the total-group Ctenophora. Our phylogenetic analyses suggest that the new taxon Daihuoides jakobvintheri gen. et sp. nov. falls near Cambrian stem ctenophores such as ‘dinomischids’ and 'scleroctenophorans'. Accordingly, Daihuoides is a Lazarus-taxon, which post-dates its older relatives by over 140 million years, and overlaps temporally with modern ctenophores, whose oldest representatives are known from the Early Devonian. Our analyses also indicate that the fossil record of ctenophores does not provide strong evidence for or against the phylogenomic hypothesis that ctenophores are sister to all other metazoans.
format	article
author	Christian Klug Johanne Kerr Michael S. Y. Lee Richard Cloutier
author_facet	Christian Klug Johanne Kerr Michael S. Y. Lee Richard Cloutier
author_sort	Christian Klug
title	A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)
title_short	A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)
title_full	A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)
title_fullStr	A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)
title_full_unstemmed	A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)
title_sort	late-surviving stem-ctenophore from the late devonian of miguasha (canada)
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7415ae8b90e14e80b98594f31741704c
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A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)

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