A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)

A new finding of a coelacanth from the upper Ladinian upper Kalkschieferzone of the Meride Limestone Formation of Monte San Giorgio (UNESCO World Heritage area) is described. It represents the first known coelacanth from the Middle Triassic that undoubtedly bears elongate thin ribs. The incompleten...

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Autores principales:	SILVIO RENESTO, FABIO MAGNANI, RUDOLF STOCKAR
Formato:	article
Lenguaje:	EN
Publicado:	Università degli Studi di Milano 2021
Materias:	Actinistia; Middle Triassic (Ladinian); Kalkschieferzone Limestone; Description. Geology QE1-996.5 Paleontology QE701-760
Acceso en línea:	https://doaj.org/article/090290919b774e849902cf2703f2d7c2
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spelling	oai:doaj.org-article:090290919b774e849902cf2703f2d7c22021-11-12T09:18:35ZA NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)10.13130/2039-4942/167310035-68832039-4942https://doaj.org/article/090290919b774e849902cf2703f2d7c22021-11-01T00:00:00Zhttps://riviste.unimi.it/index.php/RIPS/article/view/16731https://doaj.org/toc/0035-6883https://doaj.org/toc/2039-4942 A new finding of a coelacanth from the upper Ladinian upper Kalkschieferzone of the Meride Limestone Formation of Monte San Giorgio (UNESCO World Heritage area) is described. It represents the first known coelacanth from the Middle Triassic that undoubtedly bears elongate thin ribs. The incompleteness of the specimen prevents a reliable taxonomic assignment or the erection of a new species, however some characters, mainly scale morphology, are very similar to those of the holotype of Heptanema paradoxum Bellotti, 1857 from the roughly coeval Perledo Formation of Northern Italy. Elongate ribs are not reported in original descriptions of H. paradoxum, however small portion of ribs are visible among the scales of the holotype. Accordingly, the new specimen is tentatively ascribed to Heptanema as Heptanema cf H. paradoxum. SILVIO RENESTOFABIO MAGNANIRUDOLF STOCKARUniversità degli Studi di MilanoarticleActinistia; Middle Triassic (Ladinian); Kalkschieferzone Limestone; Description.GeologyQE1-996.5PaleontologyQE701-760ENRivista Italiana di Paleontologia e Stratigrafia, Vol 127, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Actinistia; Middle Triassic (Ladinian); Kalkschieferzone Limestone; Description. Geology QE1-996.5 Paleontology QE701-760
spellingShingle	Actinistia; Middle Triassic (Ladinian); Kalkschieferzone Limestone; Description. Geology QE1-996.5 Paleontology QE701-760 SILVIO RENESTO FABIO MAGNANI RUDOLF STOCKAR A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)
description	A new finding of a coelacanth from the upper Ladinian upper Kalkschieferzone of the Meride Limestone Formation of Monte San Giorgio (UNESCO World Heritage area) is described. It represents the first known coelacanth from the Middle Triassic that undoubtedly bears elongate thin ribs. The incompleteness of the specimen prevents a reliable taxonomic assignment or the erection of a new species, however some characters, mainly scale morphology, are very similar to those of the holotype of Heptanema paradoxum Bellotti, 1857 from the roughly coeval Perledo Formation of Northern Italy. Elongate ribs are not reported in original descriptions of H. paradoxum, however small portion of ribs are visible among the scales of the holotype. Accordingly, the new specimen is tentatively ascribed to Heptanema as Heptanema cf H. paradoxum.
format	article
author	SILVIO RENESTO FABIO MAGNANI RUDOLF STOCKAR
author_facet	SILVIO RENESTO FABIO MAGNANI RUDOLF STOCKAR
author_sort	SILVIO RENESTO
title	A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)
title_short	A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)
title_full	A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)
title_fullStr	A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)
title_full_unstemmed	A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)
title_sort	new coelacanth specimen with elongate ribs from the middle triassic (ladinian) kalkschieferzone of monte san giorgio (canton ticino, switzerland)
publisher	Università degli Studi di Milano
publishDate	2021
url	https://doaj.org/article/090290919b774e849902cf2703f2d7c2
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A NEW COELACANTH SPECIMEN WITH ELONGATE RIBS FROM THE MIDDLE TRIASSIC (LADINIAN) KALKSCHIEFERZONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)

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