Cover image: The palaeoecological reconstruction of the mammalian fauna of Late Pliocene at Yegou, located around Daodi Village in the Nihewan Basin, Hebei Province. At that time, it was mainly an open savanna area, where once lived and reproduced a large quantity of medium or large-sized mammals, such as Nyctereutes tingi, Pachycrocuta pyrenaica, Homotherium sp., Hipparion (Plesiohipparion) houfenense, Dicerorhinus sp., Axis shansius, Gazella blacki, Paracamelus sp. and so on. Although Yegou is indeed located in the same basin as Xiashagou, the world-renowned locality where the classical Nihewan fauna(Early Pleistocene)was produced, they are completely different in the composition of assemblage, indicating that there are indeed Pliocene strata and corresponding mammal fossils in the Nihewan Basin. This provides new data and solid evidences for exploring and understanding the span of geological age and the succession or revolution of the Late Cenozoic mammalian fauna in the Nihewan Basin. See details in the paper of Liu et al. (illustrated by Chen Yu)