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A Marine Stem-Tetrapod from the Devonian of Western North America
The origin of terrestrial vertebrates represents one of the major evolutionary and ecological transformations in the history of life, and the established timing and environment of this transition has recently come under scrutiny. The discovery and description of a well-preserved fossil sarcopterygia...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Public Library of Science
2012
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3308997/ https://www.ncbi.nlm.nih.gov/pubmed/22448265 http://dx.doi.org/10.1371/journal.pone.0033683 |
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author | Swartz, Brian |
author_facet | Swartz, Brian |
author_sort | Swartz, Brian |
collection | PubMed |
description | The origin of terrestrial vertebrates represents one of the major evolutionary and ecological transformations in the history of life, and the established timing and environment of this transition has recently come under scrutiny. The discovery and description of a well-preserved fossil sarcopterygian (fleshy-limbed vertebrate) from the Middle Devonian of Nevada helps to refine and question aspects of the temporal and anatomical framework that underpins the tetrapod condition. This new taxon, Tinirau clackae, demonstrates that substantial parallelism pervaded the early history of stem-tetrapods, raises additional questions about when digited sarcopterygians first evolved, and further documents that incipient stages of the terrestrial appendicular condition began when sarcopterygians still retained their median fins and occupied aquatic habitats. |
format | Online Article Text |
id | pubmed-3308997 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-33089972012-03-23 A Marine Stem-Tetrapod from the Devonian of Western North America Swartz, Brian PLoS One Research Article The origin of terrestrial vertebrates represents one of the major evolutionary and ecological transformations in the history of life, and the established timing and environment of this transition has recently come under scrutiny. The discovery and description of a well-preserved fossil sarcopterygian (fleshy-limbed vertebrate) from the Middle Devonian of Nevada helps to refine and question aspects of the temporal and anatomical framework that underpins the tetrapod condition. This new taxon, Tinirau clackae, demonstrates that substantial parallelism pervaded the early history of stem-tetrapods, raises additional questions about when digited sarcopterygians first evolved, and further documents that incipient stages of the terrestrial appendicular condition began when sarcopterygians still retained their median fins and occupied aquatic habitats. Public Library of Science 2012-03-20 /pmc/articles/PMC3308997/ /pubmed/22448265 http://dx.doi.org/10.1371/journal.pone.0033683 Text en Brian Swartz. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Swartz, Brian A Marine Stem-Tetrapod from the Devonian of Western North America |
title | A Marine Stem-Tetrapod from the Devonian of Western North America |
title_full | A Marine Stem-Tetrapod from the Devonian of Western North America |
title_fullStr | A Marine Stem-Tetrapod from the Devonian of Western North America |
title_full_unstemmed | A Marine Stem-Tetrapod from the Devonian of Western North America |
title_short | A Marine Stem-Tetrapod from the Devonian of Western North America |
title_sort | marine stem-tetrapod from the devonian of western north america |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3308997/ https://www.ncbi.nlm.nih.gov/pubmed/22448265 http://dx.doi.org/10.1371/journal.pone.0033683 |
work_keys_str_mv | AT swartzbrian amarinestemtetrapodfromthedevonianofwesternnorthamerica AT swartzbrian marinestemtetrapodfromthedevonianofwesternnorthamerica |