The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.

Mosasauroids are conventionally conceived of as gigantic, obligatorily aquatic marine lizards (1000s of specimens from marine deposited rocks) with a cosmopolitan distribution in the Late Cretaceous (90-65 million years ago [mya]) oceans and seas of the world. Here we report on the fossilized remain...

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Autores principales:	László Makádi, Michael W Caldwell, Attila Ősi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/153646efdfb841c1a2d6c207c41fd303
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spelling	oai:doaj.org-article:153646efdfb841c1a2d6c207c41fd3032021-11-18T08:04:32ZThe first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.1932-620310.1371/journal.pone.0051781https://doaj.org/article/153646efdfb841c1a2d6c207c41fd3032012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23284766/?tool=EBIhttps://doaj.org/toc/1932-6203Mosasauroids are conventionally conceived of as gigantic, obligatorily aquatic marine lizards (1000s of specimens from marine deposited rocks) with a cosmopolitan distribution in the Late Cretaceous (90-65 million years ago [mya]) oceans and seas of the world. Here we report on the fossilized remains of numerous individuals (small juveniles to large adults) of a new taxon, Pannoniasaurus inexpectatus gen. et sp. nov. from the Csehbánya Formation, Hungary (Santonian, Upper Cretaceous, 85.3-83.5 mya) that represent the first known mosasauroid that lived in freshwater environments. Previous to this find, only one specimen of a marine mosasauroid, cf. Plioplatecarpus sp., is known from non-marine rocks in Western Canada. Pannoniasaurus inexpectatus gen. et sp. nov. uniquely possesses a plesiomorphic pelvic anatomy, a non-mosasauroid but pontosaur-like tail osteology, possibly limbs like a terrestrial lizard, and a flattened, crocodile-like skull. Cladistic analysis reconstructs P. inexpectatus in a new clade of mosasauroids: (Pannoniasaurus (Tethysaurus (Yaguarasaurus, Russellosaurus))). P. inexpectatus is part of a mixed terrestrial and freshwater faunal assemblage that includes fishes, amphibians turtles, terrestrial lizards, crocodiles, pterosaurs, dinosaurs and birds.László MakádiMichael W CaldwellAttila ŐsiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 12, p e51781 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q László Makádi Michael W Caldwell Attila Ősi The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.
description	Mosasauroids are conventionally conceived of as gigantic, obligatorily aquatic marine lizards (1000s of specimens from marine deposited rocks) with a cosmopolitan distribution in the Late Cretaceous (90-65 million years ago [mya]) oceans and seas of the world. Here we report on the fossilized remains of numerous individuals (small juveniles to large adults) of a new taxon, Pannoniasaurus inexpectatus gen. et sp. nov. from the Csehbánya Formation, Hungary (Santonian, Upper Cretaceous, 85.3-83.5 mya) that represent the first known mosasauroid that lived in freshwater environments. Previous to this find, only one specimen of a marine mosasauroid, cf. Plioplatecarpus sp., is known from non-marine rocks in Western Canada. Pannoniasaurus inexpectatus gen. et sp. nov. uniquely possesses a plesiomorphic pelvic anatomy, a non-mosasauroid but pontosaur-like tail osteology, possibly limbs like a terrestrial lizard, and a flattened, crocodile-like skull. Cladistic analysis reconstructs P. inexpectatus in a new clade of mosasauroids: (Pannoniasaurus (Tethysaurus (Yaguarasaurus, Russellosaurus))). P. inexpectatus is part of a mixed terrestrial and freshwater faunal assemblage that includes fishes, amphibians turtles, terrestrial lizards, crocodiles, pterosaurs, dinosaurs and birds.
format	article
author	László Makádi Michael W Caldwell Attila Ősi
author_facet	László Makádi Michael W Caldwell Attila Ősi
author_sort	László Makádi
title	The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.
title_short	The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.
title_full	The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.
title_fullStr	The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.
title_full_unstemmed	The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.
title_sort	first freshwater mosasauroid (upper cretaceous, hungary) and a new clade of basal mosasauroids.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/153646efdfb841c1a2d6c207c41fd303
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The first freshwater mosasauroid (Upper Cretaceous, Hungary) and a new clade of basal mosasauroids.

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