The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic

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The temnospondyl Rhinesuchidae included more than 20 nominal taxa, many of which were based on poorly preserved and taxonomically indeterminate holotypes. In the present contribution, a comprehensive revision of Rhinesuchidae is presented based on a re-examination of every nominal species. As a resu...

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Autores principales:	Marsicano, C.A., Latimer, E., Rubidge, B., Smith, R.M.H.
Formato:	JOUR
Materias:	Palaeobiogeography Permian Phylogeny Temnospondyli Triassic
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00244082_v181_n2_p357_Marsicano
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_00244082_v181_n2_p357_Marsicano2023-10-03T14:35:09Z The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic Marsicano, C.A. Latimer, E. Rubidge, B. Smith, R.M.H. Palaeobiogeography Permian Phylogeny Temnospondyli Triassic The temnospondyl Rhinesuchidae included more than 20 nominal taxa, many of which were based on poorly preserved and taxonomically indeterminate holotypes. In the present contribution, a comprehensive revision of Rhinesuchidae is presented based on a re-examination of every nominal species. As a result, we recognize eight valid species: Rhinesuchus whaitsi, Uranocentrodon senekalensis, Rhinesuchoides capensis nov. com., Rhinesuchoides tenuiceps, Laccosaurus watsoni, Rhineceps nyasaensis, Australerpeton cosgriffi and Broomistega putterilli. A new comprehensive phylogenetic analysis supports the monophyly of the Rhinesuchidae based on several derived character states mainly related to the unique structure of the otic region in the clade. The new hypothesis supports previous schemes where Rhinesuchidae is positioned as the earliest diverging clade of Stereospondyli. Within Rhinesuchidae, a basal split separates the unique Brazilian gavial-like snouted rhinesuchid A. cosgriffi from the rest of the rhinesuchids, represented by African taxa. The recent recognition of putative rhinesuchids in the Cisuralian of tropical Gondwana attests to the origin of the group in the lower latitudes of western Gondwana. Subsequently, rhinesuchids dispersed and diversified into the temperate areas of Gondwana during later Permian times, thus representing the first early radiation of stereospondyls which by the beginning of the Triassic colonized most fresh-water environments across Pangea. © 2017 The Linnean Society of London. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00244082_v181_n2_p357_Marsicano
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Palaeobiogeography Permian Phylogeny Temnospondyli Triassic
spellingShingle	Palaeobiogeography Permian Phylogeny Temnospondyli Triassic Marsicano, C.A. Latimer, E. Rubidge, B. Smith, R.M.H. The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic
topic_facet	Palaeobiogeography Permian Phylogeny Temnospondyli Triassic
description	The temnospondyl Rhinesuchidae included more than 20 nominal taxa, many of which were based on poorly preserved and taxonomically indeterminate holotypes. In the present contribution, a comprehensive revision of Rhinesuchidae is presented based on a re-examination of every nominal species. As a result, we recognize eight valid species: Rhinesuchus whaitsi, Uranocentrodon senekalensis, Rhinesuchoides capensis nov. com., Rhinesuchoides tenuiceps, Laccosaurus watsoni, Rhineceps nyasaensis, Australerpeton cosgriffi and Broomistega putterilli. A new comprehensive phylogenetic analysis supports the monophyly of the Rhinesuchidae based on several derived character states mainly related to the unique structure of the otic region in the clade. The new hypothesis supports previous schemes where Rhinesuchidae is positioned as the earliest diverging clade of Stereospondyli. Within Rhinesuchidae, a basal split separates the unique Brazilian gavial-like snouted rhinesuchid A. cosgriffi from the rest of the rhinesuchids, represented by African taxa. The recent recognition of putative rhinesuchids in the Cisuralian of tropical Gondwana attests to the origin of the group in the lower latitudes of western Gondwana. Subsequently, rhinesuchids dispersed and diversified into the temperate areas of Gondwana during later Permian times, thus representing the first early radiation of stereospondyls which by the beginning of the Triassic colonized most fresh-water environments across Pangea. © 2017 The Linnean Society of London.
format	JOUR
author	Marsicano, C.A. Latimer, E. Rubidge, B. Smith, R.M.H.
author_facet	Marsicano, C.A. Latimer, E. Rubidge, B. Smith, R.M.H.
author_sort	Marsicano, C.A.
title	The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic
title_short	The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic
title_full	The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic
title_fullStr	The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic
title_full_unstemmed	The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic
title_sort	rhinesuchidae and early history of the stereospondyli (amphibia: temnospondyli) at the end of the palaeozoic
url	http://hdl.handle.net/20.500.12110/paper_00244082_v181_n2_p357_Marsicano
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The Rhinesuchidae and early history of the Stereospondyli (Amphibia: Temnospondyli) at the end of the Palaeozoic

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