The homology and function of the lung plates in extant and fossil coelacanths

Abstract The presence of a pulmonary organ that is entirely covered by true bone tissue and fills most of the abdominal cavity is hitherto unique to fossil actinistians. Although small hard plates have been recently reported in the lung of the extant coelacanth Latimeria chalumnae, the homology betw...

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Autores principales:	Camila Cupello, François J. Meunier, Marc Herbin, Philippe Janvier, Gaël Clément, Paulo M. Brito
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/57ed1c4770dd4a09b83c46ce0a68ac57
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spelling	oai:doaj.org-article:57ed1c4770dd4a09b83c46ce0a68ac572021-12-02T12:31:55ZThe homology and function of the lung plates in extant and fossil coelacanths10.1038/s41598-017-09327-62045-2322https://doaj.org/article/57ed1c4770dd4a09b83c46ce0a68ac572017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09327-6https://doaj.org/toc/2045-2322Abstract The presence of a pulmonary organ that is entirely covered by true bone tissue and fills most of the abdominal cavity is hitherto unique to fossil actinistians. Although small hard plates have been recently reported in the lung of the extant coelacanth Latimeria chalumnae, the homology between these hard structures in fossil and extant forms remained to be demonstrated. Here, we resolve this question by reporting the presence of a similar histological pattern–true cellular bone with star-shaped osteocytes, and a globular mineralisation with radiating arrangement–in the lung plates of two fossil coelacanths (Swenzia latimerae and Axelrodichthys araripensis) and the plates that surround the lung of the most extensively studied extant coelacanth species, L. chalumnae. The point-for-point structural similarity of the plates in extant and fossil coelacanths supports their probable homology and, consequently, that of the organ they surround. Thus, this evidence questions the previous interpretations of the fatty organ as a component of the pulmonary complex of Latimeria.Camila CupelloFrançois J. MeunierMarc HerbinPhilippe JanvierGaël ClémentPaulo M. BritoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Camila Cupello François J. Meunier Marc Herbin Philippe Janvier Gaël Clément Paulo M. Brito The homology and function of the lung plates in extant and fossil coelacanths
description	Abstract The presence of a pulmonary organ that is entirely covered by true bone tissue and fills most of the abdominal cavity is hitherto unique to fossil actinistians. Although small hard plates have been recently reported in the lung of the extant coelacanth Latimeria chalumnae, the homology between these hard structures in fossil and extant forms remained to be demonstrated. Here, we resolve this question by reporting the presence of a similar histological pattern–true cellular bone with star-shaped osteocytes, and a globular mineralisation with radiating arrangement–in the lung plates of two fossil coelacanths (Swenzia latimerae and Axelrodichthys araripensis) and the plates that surround the lung of the most extensively studied extant coelacanth species, L. chalumnae. The point-for-point structural similarity of the plates in extant and fossil coelacanths supports their probable homology and, consequently, that of the organ they surround. Thus, this evidence questions the previous interpretations of the fatty organ as a component of the pulmonary complex of Latimeria.
format	article
author	Camila Cupello François J. Meunier Marc Herbin Philippe Janvier Gaël Clément Paulo M. Brito
author_facet	Camila Cupello François J. Meunier Marc Herbin Philippe Janvier Gaël Clément Paulo M. Brito
author_sort	Camila Cupello
title	The homology and function of the lung plates in extant and fossil coelacanths
title_short	The homology and function of the lung plates in extant and fossil coelacanths
title_full	The homology and function of the lung plates in extant and fossil coelacanths
title_fullStr	The homology and function of the lung plates in extant and fossil coelacanths
title_full_unstemmed	The homology and function of the lung plates in extant and fossil coelacanths
title_sort	homology and function of the lung plates in extant and fossil coelacanths
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/57ed1c4770dd4a09b83c46ce0a68ac57
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The homology and function of the lung plates in extant and fossil coelacanths

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