Identifier: TDX:2753
Authors: Piñero Garcia, Pedro
Abstract:
This work presents a complete taxonomic analysis of up to 1370 murid teeth collected from 14 paleontological levels of sites located in the southeastern Iberian Peninsula. The different localities have yielded micro-mammal assemblages with ages ranging from the late Miocene to the early Pleistocene, allowing for the identification of 19 murid species. From the set of taxa identified, which includes rodent species and, in one case, insectivores, biostratigraphic correlations with other sites situated in the Iberian Peninsula have been performed. Firstly, the late Miocene levels from the Romerales sections have been studied, including a paleoecological analysis. Secondly, the Sifón de Librilla section, a long and continuous continental sequence was also studied, allowing to obtain a detailed biostratigraphical record extending from the latest Miocene up to the early Pliocene. Using unambiguously established magnetostratigraphical data allows to firmly establish keys with to distinguish the late Miocene from the early Pliocene in Mediterranean continental deposits. It has also permitted the exploration of the chronological framework for the different rodent species identified in each site, as well as to refine the phylogenetic relationships of the Apodemus, Stephanomys and Paraethomys lineages. Another site is that of Puerto de la Cadena, In this case, a sedimentological, magnetostratigraphical and paleontological synthesis is provided to clarify its chronological situation. Based on a rodent succession from the Guadix-Baza Basin which ranges from the latest Miocene to the latest Pliocene, the first calibrated biozonation for the late Neogene of this area is presented. The study of the Baza-1 locality improves our knowledge about the faunistic associations present during this the early Pliocene. Regarding the early Pleistocene from this area, this work focuses on the site of Quibas. The rodent fauna from the cavity known as Gruta-1, is described to carry out a biochronological and paleoenvironmental analysis.
Repositori URV