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摘要
PRERESA (Getafe, Madrid) is a site of the first third of the Late Pleistocene, at the end of MIS 5, of which 255 m(2) have been excavated, and where 754 stone pieces and abundant remains of micro-and macrovertebrates have been recovered. This paper deals with the study of the following identified micromammals at the site: Erinaceomorpha: Erinaceus europaeus; Soricomorpha: Crocidura russula; Chiroptera: Rhinolophus ferrumequinum; Rodentia: Eliomys quercinus quercinus, Apodemus sp., Cricetulus (Allocricetus) bursae, Arvicola aff. sapidus, Microtus cabrerae, Microtus duodecimcostatus; Lagomorpha: Oryctolagus cuniculus. This faunal association, mainly due to the presence of Microtus cabrerae, belongs to the Late Pleistocene. The evolved stage of Microtus cabrerae and Arvicola aff. sapidus indicate the antiquity of this association within the first part of this period, which is consistent with the date of 84 +/- 5,6 ka BP obtained by OSL. All the taxa recorded in PRERESA are currently living in the area where the site is located, except Cricetulus (Allocricetus) bursae that became extinct in the Iberian Peninsula at the end of the Late Pleistocene. Observations on the material indicate that the accumulation of the small mammal remains could have been mainly caused by predators, most likely by pellets of birds of prey. The association of small mammals from PRERESA indicates temperate conditions with some moisture and vegetation development with some wooded areas and mainly open areas but mostly shrubby, herbaceous, wet and dry grasslands, and riparian vegetation. The comparison of the small mammals from PRERESA with those of the Middle Pleistocene sites from Aridos and Valdocarros, indicate a similarity of the climatic conditions and lansdcape in the low sections of the Manzanares and Jarama rivers in the moments that these sites represent (the advanced Middle Pleistocene and the first third of the Late Pleistocene). However, and as it is the case today, these conditions would be somewhat different in the Lozoya valley in the Sierra de Guadarrama during the first third of the Late Pleistocene, as the association of micromammals from Cueva del Camino (Pinilla del Valle) indicate, that suggests a relatively more humid climate and an environment with a greater variety of habitats. The association of small mammals from the Late Pleistocene site of PRERESA from the low section of the Manzanares valley, compared with that from Cueva del Camino that has a similar chronology, and with those of others sites of del Late Pleistocene from the North of Madrid, after our observations suggests a paleoclimate and biogeographic differentiation among those already during this period, which limiting area would be roughly the southern and eastern foothills of the Central System.
- 出版日期2011
