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Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia

The first plants related to the ferns are represented by several extinct groups that emerged during the Devonian. Among them, the iridopterids are closely allied to the sphenopsids, a group represented today by the genus Equisetum. They have been documented in Middle to early Late Devonian deposits...

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Autores principales: Champreux, Antoine, Meyer-Berthaud, Brigitte, Decombeix, Anne-Laure
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304422/
https://www.ncbi.nlm.nih.gov/pubmed/32587800
http://dx.doi.org/10.7717/peerj.9321
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author Champreux, Antoine
Meyer-Berthaud, Brigitte
Decombeix, Anne-Laure
author_facet Champreux, Antoine
Meyer-Berthaud, Brigitte
Decombeix, Anne-Laure
author_sort Champreux, Antoine
collection PubMed
description The first plants related to the ferns are represented by several extinct groups that emerged during the Devonian. Among them, the iridopterids are closely allied to the sphenopsids, a group represented today by the genus Equisetum. They have been documented in Middle to early Late Devonian deposits of Laurussia and the Kazakhstan plate. Their Gondwanan record is poor, with occurrences limited to Venezuela and Morocco. Here we describe a new genus from a late Late Devonian locality of New South Wales. It is represented by a single anatomically preserved large stem characterized by a star-shaped vascular system with protoxylem strands located at rib tips, and by a lack of secondary tissues. Within the first fern-like plants, this stem shares the largest number of characters with iridopterid axes but differs by the pattern of its vascular system. Keraphyton mawsoniae gen. et sp. nov. adds a new record of early fern-like plants in eastern Gondwana. It provides new insights into the anatomical diversity within this key group of plants and supports the distinctiveness of the Australian flora in the latest Devonian.
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spelling pubmed-73044222020-06-24 Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia Champreux, Antoine Meyer-Berthaud, Brigitte Decombeix, Anne-Laure PeerJ Paleontology The first plants related to the ferns are represented by several extinct groups that emerged during the Devonian. Among them, the iridopterids are closely allied to the sphenopsids, a group represented today by the genus Equisetum. They have been documented in Middle to early Late Devonian deposits of Laurussia and the Kazakhstan plate. Their Gondwanan record is poor, with occurrences limited to Venezuela and Morocco. Here we describe a new genus from a late Late Devonian locality of New South Wales. It is represented by a single anatomically preserved large stem characterized by a star-shaped vascular system with protoxylem strands located at rib tips, and by a lack of secondary tissues. Within the first fern-like plants, this stem shares the largest number of characters with iridopterid axes but differs by the pattern of its vascular system. Keraphyton mawsoniae gen. et sp. nov. adds a new record of early fern-like plants in eastern Gondwana. It provides new insights into the anatomical diversity within this key group of plants and supports the distinctiveness of the Australian flora in the latest Devonian. PeerJ Inc. 2020-06-16 /pmc/articles/PMC7304422/ /pubmed/32587800 http://dx.doi.org/10.7717/peerj.9321 Text en ©2020 Champreux et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Paleontology
Champreux, Antoine
Meyer-Berthaud, Brigitte
Decombeix, Anne-Laure
Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia
title Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia
title_full Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia
title_fullStr Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia
title_full_unstemmed Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia
title_short Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia
title_sort keraphyton gen. nov., a new late devonian fern-like plant from australia
topic Paleontology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304422/
https://www.ncbi.nlm.nih.gov/pubmed/32587800
http://dx.doi.org/10.7717/peerj.9321
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