Una breve revisión crítica del origen de los roedores sigmodontinos, con énfasis en datos paleontológicos
Most of the contemporary debate about the origin and early diversi cation of sigmodontine rodents, the most diverse living subfamily of cricetids, is based on the analysis of molecular evidence. In order to promote interest and highlight the importance of fossil evidence, we conducted a critical rev...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | español |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/213310 |
| Acceso en línea: | http://hdl.handle.net/11336/213310 |
| Access Level: | acceso abierto |
| Palabra clave: | CRICETIDAE MIOCENE NEOTOMINAE PLIOCENE SIGMODONTINAE https://purl.org/becyt/ford/1.7 https://purl.org/becyt/ford/1 |
| Sumario: | Most of the contemporary debate about the origin and early diversi cation of sigmodontine rodents, the most diverse living subfamily of cricetids, is based on the analysis of molecular evidence. In order to promote interest and highlight the importance of fossil evidence, we conducted a critical review of the paleontological record for this group of rodents. Thus, the Mio-Pliocene genera that have been associated directly or indirectly with the origin of the Sigmodontinae are reviewed. Although Honeymys (Oklahoma and Nebraska, USA, Clarendonian, late Miocene) has been tentatively associated with the origin of the Sigmodontinae, the oldest reliable records for the subfamily in North America are around 5 Ma, if Prosigmodon is considered a sigmodontine (a hypothesis not free of controversy). For South America, poorly-known and fragmentary evidence suggests a first occurrence of sigmodontines towards the late Huayquerian (latest Miocene), although the oldest assemblage with some diversity is from the Montehermosan (early Pliocene). For both North and South America, the most relevant findings, their refined chronological locations, as well as a detail of the main taxonomic problems associated with each one, are discussed. All this information is integrated, in a final section, with that derived from molecular phylogenies. As a guide for future phylogenetic studies based on molecular evidence, several fossils are suggested for calibrations. |
|---|