<i>Lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (Late Miocene; Buenos Aires province, Argentina)

We describe a new lagostomine rodent (Caviomorpha, Chinchillidae), <i>Lagostomus telenkechanum</i>, sp. nov., from the Arroyo Chasicó Formation (late Miocene; Buenos Aires Province, Argentina). Three characters permit its assignment to <i>Lagostomus</i>: suborbital canal for...

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Autores principales: Rasia, Luciano Luis, Candela, Adriana Magdalena
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Naturales
Lagostomus telenkechanum
lagostomine
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/106141
https://www.tandfonline.com/doi/full/10.1080/02724634.2017.1239205
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-106141
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Lagostomus telenkechanum
lagostomine
spellingShingle Ciencias Naturales
Lagostomus telenkechanum
lagostomine
Rasia, Luciano Luis
Candela, Adriana Magdalena
<i>Lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (Late Miocene; Buenos Aires province, Argentina)
topic_facet Ciencias Naturales
Lagostomus telenkechanum
lagostomine
description We describe a new lagostomine rodent (Caviomorpha, Chinchillidae), <i>Lagostomus telenkechanum</i>, sp. nov., from the Arroyo Chasicó Formation (late Miocene; Buenos Aires Province, Argentina). Three characters permit its assignment to <i>Lagostomus</i>: suborbital canal for the infraorbital nerve limited by a bony lamina, well-developed posterior process of the palatine, and posterior maxillary foramen located at the midpoint of the M3. In addition, we identify the new species based on a unique character combination (e.g., small size, palatines reaching anterior to the level of the midpoint of P4, anterior margin of mesopterygoid fossa at the level of the anterior border of M3, upper cheek teeth more compressed anteroposteriorly and more obliquely implanted in the maxilla than in <i>L. pretrichodactyla</i>, <i>L. compressidens</i>, and <i>L. maximus</i> but less than in <i>L. incisus</i>, and thick cement layer in the hypoflexus). Because the early Miocene–middle Miocene genera, <i>Prolagostomus</i> and <i>Pliolagostomus</i>, are no longer recorded from the late Miocene, whereas the oldest record of the extant genus <i>Lagostomus</i> is recognized at that time, we consider this period as an important turnover time in the taxonomic composition of the Chinchillidae. This study increases understanding of the taxonomic diversity of the late Cenozoic lagostomines, contributing to the knowledge of the evolutionary and paleobiogeographic history of chinchillids.
format Articulo
Articulo
author Rasia, Luciano Luis
Candela, Adriana Magdalena
author_facet Rasia, Luciano Luis
Candela, Adriana Magdalena
author_sort Rasia, Luciano Luis
title <i>Lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (Late Miocene; Buenos Aires province, Argentina)
title_short <i>Lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (Late Miocene; Buenos Aires province, Argentina)
title_full <i>Lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (Late Miocene; Buenos Aires province, Argentina)
title_fullStr <i>Lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (Late Miocene; Buenos Aires province, Argentina)
title_full_unstemmed <i>Lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (Caviomorpha, Chinchillidae) from the Arroyo Chasicó Formation (Late Miocene; Buenos Aires province, Argentina)
title_sort <i>lagostomus telenkechanum</i>, sp. nov., a new lagostomine rodent (caviomorpha, chinchillidae) from the arroyo chasicó formation (late miocene; buenos aires province, argentina)
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/106141
https://www.tandfonline.com/doi/full/10.1080/02724634.2017.1239205
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AT candelaadrianamagdalena ilagostomustelenkechanumispnovanewlagostominerodentcaviomorphachinchillidaefromthearroyochasicoformationlatemiocenebuenosairesprovinceargentina
bdutipo_str Repositorios
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