First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina

Mostrar todas las versiones(2)

A new species of toxodontid notoungulate, Xotodon maimarensis n. sp., is described from the Maimará Formation (late Miocene - early Pliocene), Jujuy Province, northwestern Argentina. This is the first record of a toxodontid from the Eastern Cordillera. The specimen is housed at the Museo de Geología...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bonini, Ricardo Adolfo, Schmidt, Gabriela I., Reguero, Marcelo Alfredo, Cerdeño, Esperanza, Candela, Adriana Magdalena, Solís, Natalia
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2017
Materias:	Paleontología Toxodontid Notoungulate New species
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/87362
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-87362
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Paleontología Toxodontid Notoungulate New species
spellingShingle	Paleontología Toxodontid Notoungulate New species Bonini, Ricardo Adolfo Schmidt, Gabriela I. Reguero, Marcelo Alfredo Cerdeño, Esperanza Candela, Adriana Magdalena Solís, Natalia First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina
topic_facet	Paleontología Toxodontid Notoungulate New species
description	A new species of toxodontid notoungulate, Xotodon maimarensis n. sp., is described from the Maimará Formation (late Miocene - early Pliocene), Jujuy Province, northwestern Argentina. This is the first record of a toxodontid from the Eastern Cordillera. The specimen is housed at the Museo de Geología, Mineralogía y Paleontología, Instituto de Geología y Minería de la Universidad Nacional de Jujuy. It consists of an incomplete mandible preserving the right mandibular ramus with part of the dental series, partially preserved symphysis with all the incisors, and a small portion of the left ramus without teeth. The following characters distinguish it as a new taxon: symphysis long and narrow with slight divergence of its lateral borders; strong procumbence of lower incisors and deeply implanted i3; chin angle lower than in X. major and X. cristatus and bulging labial keel limiting strong lateral concavities. Comparative analysis in the context of the recently revised Neogene Toxodontidae indicates that the Maimará specimen shares mandibular features and dental characters with Xotodon and Mixotoxodon, differing from the latter by the more upraised symphysis. The phylogenetic position of Xotodon maimarensis n. sp. supports the taxonomic interpretation of the studied specimen as a new species of Xotodon. This new Toxodontidae increases the knowledge of the diversity and radiation of this group of notoungulates in northwest Argentina.
format	Articulo Articulo
author	Bonini, Ricardo Adolfo Schmidt, Gabriela I. Reguero, Marcelo Alfredo Cerdeño, Esperanza Candela, Adriana Magdalena Solís, Natalia
author_facet	Bonini, Ricardo Adolfo Schmidt, Gabriela I. Reguero, Marcelo Alfredo Cerdeño, Esperanza Candela, Adriana Magdalena Solís, Natalia
author_sort	Bonini, Ricardo Adolfo
title	First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina
title_short	First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina
title_full	First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina
title_fullStr	First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina
title_full_unstemmed	First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina
title_sort	first record of toxodontidae (mammalia, notoungulata) from the late miocene - early pliocene of the southern central andes, nw argentina
publishDate	2017
url	http://sedici.unlp.edu.ar/handle/10915/87362
work_keys_str_mv	AT boniniricardoadolfo firstrecordoftoxodontidaemammalianotoungulatafromthelatemioceneearlyplioceneofthesoutherncentralandesnwargentina AT schmidtgabrielai firstrecordoftoxodontidaemammalianotoungulatafromthelatemioceneearlyplioceneofthesoutherncentralandesnwargentina AT regueromarceloalfredo firstrecordoftoxodontidaemammalianotoungulatafromthelatemioceneearlyplioceneofthesoutherncentralandesnwargentina AT cerdenoesperanza firstrecordoftoxodontidaemammalianotoungulatafromthelatemioceneearlyplioceneofthesoutherncentralandesnwargentina AT candelaadrianamagdalena firstrecordoftoxodontidaemammalianotoungulatafromthelatemioceneearlyplioceneofthesoutherncentralandesnwargentina AT solisnatalia firstrecordoftoxodontidaemammalianotoungulatafromthelatemioceneearlyplioceneofthesoutherncentralandesnwargentina
bdutipo_str	Repositorios
_version_	1764820489916645376

First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene - Early Pliocene of the southern central Andes, NW Argentina

Ejemplares similares