New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications

During the last decade, the Deseadan (late Oligocene) Quebrada Fiera locality, Mendoza Province, Argentina, has provided a large amount of mammal remains. Taxonomic studies have shown the presence of faunal elements common with other Deseadan associations from Patagonia and lower latitudes (Salla, B...

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Autores principales: Del Pino, S.H., Seoane, F.D., Cerdeño, E.
Formato: JOUR
Materias:
Argentina
Deseadan Age
Homalodotheriidae
Leontiniidae
Mammalia
Mendoza
Postcranium
Toxodontidae
cranium
endemic species
geographical distribution
Oligocene
paleontology
phylogenetics
skeletal remains
taxonomy
ungulate
Cuyana
Gastropoda
Metatheria
Notoungulata
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05677920_v62_n_p195_DelPino
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_05677920_v62_n_p195_DelPino
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spelling todo:paper_05677920_v62_n_p195_DelPino2023-10-03T15:35:58Z New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications Del Pino, S.H. Seoane, F.D. Cerdeño, E. Argentina Deseadan Age Homalodotheriidae Leontiniidae Mammalia Mendoza Postcranium Toxodontidae cranium endemic species geographical distribution Oligocene paleontology phylogenetics skeletal remains taxonomy ungulate Argentina Mendoza Cuyana Gastropoda Mammalia Metatheria Notoungulata During the last decade, the Deseadan (late Oligocene) Quebrada Fiera locality, Mendoza Province, Argentina, has provided a large amount of mammal remains. Taxonomic studies have shown the presence of faunal elements common with other Deseadan associations from Patagonia and lower latitudes (Salla, Bolivia), as well as endemic taxa of different groups of mammals (Notohippidae, Leontiniidae, Homalodotheriidae, Hegetotheriidae, and Metatheria) and even a gastropod. In this work, we present a taxonomic and phylogenetic analysis of a set of postcranial fossils of three families of the suborder Toxodontia (Notoungulata). The postcranial elements are assigned to taxa previously recognized at Quebrada Fiera, such as the leontiniid Gualta cuyana and the homalodotheriid Asmodeus petrasnerus, but also to the family Toxodontidae that is represented by Proadinotherium sp. and another larger toxodontid; a few dental remains of Proadinotherium are also included as this is the first time that toxodontids from Quebrada Fiera are described. In the case of A. petrasnerus, an almost complete calcaneum allows us to expand the diagnosis of this taxon. The bones assigned to G. cuyana enlarge the anatomical knowledge of this species. In turn, the presence of the genus Proadinotherium extends its geographic distribution in Argentina and adds to the extra-Patagonian record of P. saltoni from Salla, Bolivia. Phylogenetic results do not differ much from previous analyses using postcranial characters, and the obtained consensus trees show low node supports. The various phylogenetic analyses performed here provide a more robust framework to interpret the relationships of the studied taxa. © Copyright 2017 S. Hernández Del Pino et al. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05677920_v62_n_p195_DelPino
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Deseadan Age
Homalodotheriidae
Leontiniidae
Mammalia
Mendoza
Postcranium
Toxodontidae
cranium
endemic species
geographical distribution
Oligocene
paleontology
phylogenetics
skeletal remains
taxonomy
ungulate
Argentina
Mendoza
Cuyana
Gastropoda
Mammalia
Metatheria
Notoungulata
spellingShingle Argentina
Deseadan Age
Homalodotheriidae
Leontiniidae
Mammalia
Mendoza
Postcranium
Toxodontidae
cranium
endemic species
geographical distribution
Oligocene
paleontology
phylogenetics
skeletal remains
taxonomy
ungulate
Argentina
Mendoza
Cuyana
Gastropoda
Mammalia
Metatheria
Notoungulata
Del Pino, S.H.
Seoane, F.D.
Cerdeño, E.
New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
topic_facet Argentina
Deseadan Age
Homalodotheriidae
Leontiniidae
Mammalia
Mendoza
Postcranium
Toxodontidae
cranium
endemic species
geographical distribution
Oligocene
paleontology
phylogenetics
skeletal remains
taxonomy
ungulate
Argentina
Mendoza
Cuyana
Gastropoda
Mammalia
Metatheria
Notoungulata
description During the last decade, the Deseadan (late Oligocene) Quebrada Fiera locality, Mendoza Province, Argentina, has provided a large amount of mammal remains. Taxonomic studies have shown the presence of faunal elements common with other Deseadan associations from Patagonia and lower latitudes (Salla, Bolivia), as well as endemic taxa of different groups of mammals (Notohippidae, Leontiniidae, Homalodotheriidae, Hegetotheriidae, and Metatheria) and even a gastropod. In this work, we present a taxonomic and phylogenetic analysis of a set of postcranial fossils of three families of the suborder Toxodontia (Notoungulata). The postcranial elements are assigned to taxa previously recognized at Quebrada Fiera, such as the leontiniid Gualta cuyana and the homalodotheriid Asmodeus petrasnerus, but also to the family Toxodontidae that is represented by Proadinotherium sp. and another larger toxodontid; a few dental remains of Proadinotherium are also included as this is the first time that toxodontids from Quebrada Fiera are described. In the case of A. petrasnerus, an almost complete calcaneum allows us to expand the diagnosis of this taxon. The bones assigned to G. cuyana enlarge the anatomical knowledge of this species. In turn, the presence of the genus Proadinotherium extends its geographic distribution in Argentina and adds to the extra-Patagonian record of P. saltoni from Salla, Bolivia. Phylogenetic results do not differ much from previous analyses using postcranial characters, and the obtained consensus trees show low node supports. The various phylogenetic analyses performed here provide a more robust framework to interpret the relationships of the studied taxa. © Copyright 2017 S. Hernández Del Pino et al.
format JOUR
author Del Pino, S.H.
Seoane, F.D.
Cerdeño, E.
author_facet Del Pino, S.H.
Seoane, F.D.
Cerdeño, E.
author_sort Del Pino, S.H.
title New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
title_short New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
title_full New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
title_fullStr New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
title_full_unstemmed New postcranial remains of large toxodontian notoungulates from the late Oligocene of Mendoza, Argentina and their systematic implications
title_sort new postcranial remains of large toxodontian notoungulates from the late oligocene of mendoza, argentina and their systematic implications
url http://hdl.handle.net/20.500.12110/paper_05677920_v62_n_p195_DelPino
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