Abstract: The early Pleistocene is represented by a succession of glacial-interglacial cycles character-ized by a general tendency towards global cooling, with increasing aridity and seasonality.The large deer Eucladoceros is found in abundance in Europe during this period of faunaldispersions. The dietary plasticity of Eucladoceros and how it can mirror early Pleistoceneclimatic variations will be explored here using Dental Microwear Texture Analysis. Thewide range of dental microwear textures for Eucladoceros reflects a low selectivity and highplasticity in its diet. It is an appropriate proxy to track vegetal resource availability. Oscil-lations were identified between a browsing and a grazing signal. This study proposes thata browsing signal is associated with a fossil assemblage deposited during an interglacialevent characterized by warmer temperatures and deciduous vegetation. A grazing signalmore likely indicates a glacial event with cooler temperatures and a developed herbaceous,bushy layer.

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