Resumen de Bioestratigrafía y evolución de Microtus brecciensis en los yacimientos del Pleistoceno de Atapuerca (Burgos, España).

Enrique Gil Bazán

• The stratigraphic correlation and the chronometricals datums obtained in the levels from the karstic fillings of Atapuerca, enable us to see a paleontologic record of Microtils brecciensis since last episodes of Lower Pleistocene, till the end of the Middle Pleistocene, and a evolutive trend to increase size through this time.