An anilioid snake from the Upper Cretaceous of northern Patagonia

We report the first record of anilioids from southern South America, a region where they do not live today. The fossils come from the Allen Formation (Late Campanian-Early Maastrichtian) at Bajo Trapalcó and Bajo de Santa Rosa localities, Río Negro province, Argentina. The remains consist of several...

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Detalles Bibliográficos
Autores principales:	Baez, Ana María, Rougier, Guillermo Walter
Publicado:	2008
Materias:	Anilioidea Australophis Cretaceous Patagonia Serpentes Campanian extinction fossil Maastrichtian morphology new taxon snake Argentina Rio Negro [Argentina] South America Anilius Cylindrophis Uropeltidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v29_n3_p481_Gomez http://hdl.handle.net/20.500.12110/paper_01956671_v29_n3_p481_Gomez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01956671_v29_n3_p481_Gomez
record_format	dspace
spelling	paper:paper_01956671_v29_n3_p481_Gomez2023-06-08T15:20:10Z An anilioid snake from the Upper Cretaceous of northern Patagonia Baez, Ana María Rougier, Guillermo Walter Anilioidea Australophis Cretaceous Patagonia Serpentes Campanian Cretaceous extinction fossil Maastrichtian morphology new taxon snake Argentina Patagonia Rio Negro [Argentina] South America Anilius Cylindrophis Serpentes Uropeltidae We report the first record of anilioids from southern South America, a region where they do not live today. The fossils come from the Allen Formation (Late Campanian-Early Maastrichtian) at Bajo Trapalcó and Bajo de Santa Rosa localities, Río Negro province, Argentina. The remains consist of several vertebrae, most of which belong to the mid-posterior precloacal region of the column. Comparisons to other extant and extinct anilioid taxa indicate that these remains represent a new taxon, Australophis anilioides gen. et sp. nov. Australophis is morphologically closer to Palaeocene Hoffstetterella from Brazil and extant South American Anilius than to any other snake. These taxa might be closely related, in which case they would represent a lineage distinct from that including Cylindrophis and uropeltids. The two lineages must have diverged by the Late Cretaceous. © 2008 Elsevier Ltd. All rights reserved. Fil:Báez, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rougier, G.W. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v29_n3_p481_Gomez http://hdl.handle.net/20.500.12110/paper_01956671_v29_n3_p481_Gomez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Anilioidea Australophis Cretaceous Patagonia Serpentes Campanian Cretaceous extinction fossil Maastrichtian morphology new taxon snake Argentina Patagonia Rio Negro [Argentina] South America Anilius Cylindrophis Serpentes Uropeltidae
spellingShingle	Anilioidea Australophis Cretaceous Patagonia Serpentes Campanian Cretaceous extinction fossil Maastrichtian morphology new taxon snake Argentina Patagonia Rio Negro [Argentina] South America Anilius Cylindrophis Serpentes Uropeltidae Baez, Ana María Rougier, Guillermo Walter An anilioid snake from the Upper Cretaceous of northern Patagonia
topic_facet	Anilioidea Australophis Cretaceous Patagonia Serpentes Campanian Cretaceous extinction fossil Maastrichtian morphology new taxon snake Argentina Patagonia Rio Negro [Argentina] South America Anilius Cylindrophis Serpentes Uropeltidae
description	We report the first record of anilioids from southern South America, a region where they do not live today. The fossils come from the Allen Formation (Late Campanian-Early Maastrichtian) at Bajo Trapalcó and Bajo de Santa Rosa localities, Río Negro province, Argentina. The remains consist of several vertebrae, most of which belong to the mid-posterior precloacal region of the column. Comparisons to other extant and extinct anilioid taxa indicate that these remains represent a new taxon, Australophis anilioides gen. et sp. nov. Australophis is morphologically closer to Palaeocene Hoffstetterella from Brazil and extant South American Anilius than to any other snake. These taxa might be closely related, in which case they would represent a lineage distinct from that including Cylindrophis and uropeltids. The two lineages must have diverged by the Late Cretaceous. © 2008 Elsevier Ltd. All rights reserved.
author	Baez, Ana María Rougier, Guillermo Walter
author_facet	Baez, Ana María Rougier, Guillermo Walter
author_sort	Baez, Ana María
title	An anilioid snake from the Upper Cretaceous of northern Patagonia
title_short	An anilioid snake from the Upper Cretaceous of northern Patagonia
title_full	An anilioid snake from the Upper Cretaceous of northern Patagonia
title_fullStr	An anilioid snake from the Upper Cretaceous of northern Patagonia
title_full_unstemmed	An anilioid snake from the Upper Cretaceous of northern Patagonia
title_sort	anilioid snake from the upper cretaceous of northern patagonia
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v29_n3_p481_Gomez http://hdl.handle.net/20.500.12110/paper_01956671_v29_n3_p481_Gomez
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An anilioid snake from the Upper Cretaceous of northern Patagonia

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