First record of a tomistomine crocodylian from Australia

Abstract Based on the known fossil record, the majority of crocodylians from the Cenozoic Era of Australia are referred to the extinct clade Mekosuchinae. The only extant crocodylians in Australia are two species of Crocodylus. Hence, the viewpoint that Crocodylus and mekosuchines have been the only...

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Autores principales:	Jorgo Ristevski, Gilbert J. Price, Vera Weisbecker, Steven W. Salisbury
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bccf9256bf5e4f468e4b12a02f3b3d12
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spelling	oai:doaj.org-article:bccf9256bf5e4f468e4b12a02f3b3d122021-12-02T14:59:29ZFirst record of a tomistomine crocodylian from Australia10.1038/s41598-021-91717-y2045-2322https://doaj.org/article/bccf9256bf5e4f468e4b12a02f3b3d122021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91717-yhttps://doaj.org/toc/2045-2322Abstract Based on the known fossil record, the majority of crocodylians from the Cenozoic Era of Australia are referred to the extinct clade Mekosuchinae. The only extant crocodylians in Australia are two species of Crocodylus. Hence, the viewpoint that Crocodylus and mekosuchines have been the only crocodylians inhabiting Australia during the Cenozoic has remained largely undisputed. Herein we describe Australia’s first tomistomine crocodylian, Gunggamarandu maunala gen. et sp. nov., thus challenging the notion of mekosuchine dominance during most of the Cenozoic. The holotype specimen of Gunggamarandu maunala derives from the Pliocene or Pleistocene of south-eastern Queensland, marking the southern-most global record for Tomistominae. Gunggamarandu maunala is known from a large, incomplete cranium that possesses a unique combination of features that distinguishes it from other crocodylians. Phylogenetic analyses place Gunggamarandu in a basal position within Tomistominae, specifically as a sister taxon to Dollosuchoides from the Eocene of Europe. These results hint at a potential ghost lineage between European and Australian tomistomines going back more than 50 million years. The cranial proportions of the Gunggamarandu maunala holotype specimen indicate it is the largest crocodyliform yet discovered from Australia.Jorgo RistevskiGilbert J. PriceVera WeisbeckerSteven W. SalisburyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jorgo Ristevski Gilbert J. Price Vera Weisbecker Steven W. Salisbury First record of a tomistomine crocodylian from Australia
description	Abstract Based on the known fossil record, the majority of crocodylians from the Cenozoic Era of Australia are referred to the extinct clade Mekosuchinae. The only extant crocodylians in Australia are two species of Crocodylus. Hence, the viewpoint that Crocodylus and mekosuchines have been the only crocodylians inhabiting Australia during the Cenozoic has remained largely undisputed. Herein we describe Australia’s first tomistomine crocodylian, Gunggamarandu maunala gen. et sp. nov., thus challenging the notion of mekosuchine dominance during most of the Cenozoic. The holotype specimen of Gunggamarandu maunala derives from the Pliocene or Pleistocene of south-eastern Queensland, marking the southern-most global record for Tomistominae. Gunggamarandu maunala is known from a large, incomplete cranium that possesses a unique combination of features that distinguishes it from other crocodylians. Phylogenetic analyses place Gunggamarandu in a basal position within Tomistominae, specifically as a sister taxon to Dollosuchoides from the Eocene of Europe. These results hint at a potential ghost lineage between European and Australian tomistomines going back more than 50 million years. The cranial proportions of the Gunggamarandu maunala holotype specimen indicate it is the largest crocodyliform yet discovered from Australia.
format	article
author	Jorgo Ristevski Gilbert J. Price Vera Weisbecker Steven W. Salisbury
author_facet	Jorgo Ristevski Gilbert J. Price Vera Weisbecker Steven W. Salisbury
author_sort	Jorgo Ristevski
title	First record of a tomistomine crocodylian from Australia
title_short	First record of a tomistomine crocodylian from Australia
title_full	First record of a tomistomine crocodylian from Australia
title_fullStr	First record of a tomistomine crocodylian from Australia
title_full_unstemmed	First record of a tomistomine crocodylian from Australia
title_sort	first record of a tomistomine crocodylian from australia
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/bccf9256bf5e4f468e4b12a02f3b3d12
work_keys_str_mv	AT jorgoristevski firstrecordofatomistominecrocodylianfromaustralia AT gilbertjprice firstrecordofatomistominecrocodylianfromaustralia AT veraweisbecker firstrecordofatomistominecrocodylianfromaustralia AT stevenwsalisbury firstrecordofatomistominecrocodylianfromaustralia
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First record of a tomistomine crocodylian from Australia

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