Evolución de mimomys savini en la península ibérica durante el pleistoceno inferior;implicaciones biocronológicas y paleoambientales en el estudio de las primeras poblaciones humanas de europa

Identificador:  TDX:1378

Handle: https://hdl.handle.net/20.500.11797/TDX1378

Autors:  Lozano Fernández, Iván

Resum:
The study of Mimomys savini material from the Spanish sites of Barranco León and Fuente Nueva 3 (Granada), Gran Dolina (Atapuerca), Vallparadis (Barcelona) and La Boella (Tarragona) shows evolutionary trends in the dental morphology of this species within the Lower and early Middle Pleistocene. The data obtained from each site were ordered on the basis of “absolute” datings available for the ~1.46-0.7 Ma time interval. Clearly detected trends are the size increase and a successive reduction in enamel islets on both the upper third and lower first molar, and in the Mimomys ridge on the lower first molar. However, the SDQ (enamel differentiation index) values of the lower first molar show no clearly directed trend within the considered time range. On the basis of these evolutionary trends observed on Mimomys savini in the Iberian Peninsula, the use of this species as chronological tool is propossed, and the phylogenetic relationship between Mimomys savini and the genus Arvicola is discussed.