A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil

Abstract Fossil microeukaryotes are key elements for understanding ancient ecosystems at microscopic level and improving the knowledge on the diversification of microbial life as a whole. We describe Palaeohypothrix bahiensis gen. et sp. nov., an exceptionally well-preserved Lower Cretaceous (Berria...

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Autores principales:	Thiago da Silva Paiva, Ismar de Souza Carvalho
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4670bb37ca324977a587d5d1ccb232b7
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spelling	oai:doaj.org-article:4670bb37ca324977a587d5d1ccb232b72021-12-02T17:37:23ZA putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil10.1038/s41598-021-97709-22045-2322https://doaj.org/article/4670bb37ca324977a587d5d1ccb232b72021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97709-2https://doaj.org/toc/2045-2322Abstract Fossil microeukaryotes are key elements for understanding ancient ecosystems at microscopic level and improving the knowledge on the diversification of microbial life as a whole. We describe Palaeohypothrix bahiensis gen. et sp. nov., an exceptionally well-preserved Lower Cretaceous (Berriasian–Barremian; 145–125 Mya) amber-entrapped microeukaryote, identified as a spirotrich ciliate. The preservation of structures interpreted as the nuclear apparatus and remains of the ciliature revealed a novel ground plan, not found in modern Spirotrichea, thus representing a putatively extinct higher taxon lineage, viz. the Palaeohypotricha nov. tax. Based on cladistic analysis, the new taxon is hypothesized as phylogenetically related to the Protohypotrichia.Thiago da Silva PaivaIsmar de Souza CarvalhoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Thiago da Silva Paiva Ismar de Souza Carvalho A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil
description	Abstract Fossil microeukaryotes are key elements for understanding ancient ecosystems at microscopic level and improving the knowledge on the diversification of microbial life as a whole. We describe Palaeohypothrix bahiensis gen. et sp. nov., an exceptionally well-preserved Lower Cretaceous (Berriasian–Barremian; 145–125 Mya) amber-entrapped microeukaryote, identified as a spirotrich ciliate. The preservation of structures interpreted as the nuclear apparatus and remains of the ciliature revealed a novel ground plan, not found in modern Spirotrichea, thus representing a putatively extinct higher taxon lineage, viz. the Palaeohypotricha nov. tax. Based on cladistic analysis, the new taxon is hypothesized as phylogenetically related to the Protohypotrichia.
format	article
author	Thiago da Silva Paiva Ismar de Souza Carvalho
author_facet	Thiago da Silva Paiva Ismar de Souza Carvalho
author_sort	Thiago da Silva Paiva
title	A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil
title_short	A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil
title_full	A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil
title_fullStr	A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil
title_full_unstemmed	A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil
title_sort	putatively extinct higher taxon of spirotrichea (ciliophora) from the lower cretaceous of brazil
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4670bb37ca324977a587d5d1ccb232b7
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A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil

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