The Middle Pleistocene was a period of dynamic changes in Europe. During MIS 11, a number of modern mammal taxa appeared and environmental conditions remained warm and favourable for a relatively long time. The Medzhybizh 1 locality of Ukraine dated to this very period comprises alluvial deposits with rich animal remains, which allow not only to reconstruct the fauna composition, but also to highlight the environmental conditions that dominated at this locality. A revision of the fauna of Medzhybizh 1 locality based on remains of all vertebrate groups revealed a taxonomically diverse fish community (16 species of 11 genera) dominated by cyprinids common for lacustrine or riverine assemblages. Amphibians are represented by 11 species, while the number of reptile and bird remains are less significant. Mammals are the most represented group at the locality, including small mammals (30 species), carnivorans (2 species), and ungulates (5 taxa), the latter dominated by C. elaphus. The taxonomic composition of terrestrial groups indicates temperate climate with boreal-type forests and meadows similar to cold steppe, as well as low wet areas and riparian habitats inhabited by amphibians, reptiles, insectivores, beavers, and various voles. The fish assemblage indicates a partially overgrown but well-aerated water body (lake or slow-flowing river) with sandy-silty bottom. Lithic artefacts found at the Medzhybizh 1 locality contribute to a better understanding of relationships between ancient hominins and faunas during the Middle Pleistocene of Eastern Europe.

中更新世是欧洲动态变化的时期。期间MIS 11出现了一批现代哺乳动物类群，环境条件在较长时间内保持温暖和有利。可追溯到这一时期的乌克兰 Medzhybzh 1 地区包括具有丰富动物遗骸的冲积沉积物，这不仅可以重建动物群组成，还可以突出该地区占主导地位的环境条件。根据所有脊椎动物群的遗骸对 Medzhybizh 1 地区的动物群进行的修订揭示了一个分类多样化的鱼类群落（11 属的 16 种），以湖泊或河流组合中常见的鲤科鱼类为主。两栖动物有 11 种，而爬行动物和鸟类遗骸的数量较少。哺乳动物是当地最具代表性的群体，包括小型哺乳动物（30 种）、食肉动物（2 种）、C. elaphus 。陆地群的分类组成表明气候温和，有类似寒冷草原的北方森林和草地，以及两栖动物、爬行动物、食虫动物、海狸和各种田鼠栖息的低湿区和河岸栖息地。鱼群表明部分杂草丛生但通气良好的水体（湖泊或缓慢流动的河流），底部为沙质粉质。在 Medzhybzh 1 地区发现的石器文物有助于更好地了解东欧中更新世古人类与动物群之间的关系。