The Early Pleistocene is recognized as a time of major global climatic and environmental change, including increasing aridity, significant spread of grasslands, and substantial faunal turnovers and dispersals. Importantly, this is the first time hominins are found in Eurasia. Reconstructing the types of environments that existed during this time is imperative for understanding mammalian, including hominin, dispersal patterns relative to climatic change. One proposed dispersal corridor across Europe is the Danube River. Here we characterize the 2.2 to ~1.1 million years ago (Ma) paleoenvironments surrounding one of the tributaries to the Danube, the Olteţ River, in southern Romania using a multiproxy approach, including taxonomic uniformitarianism, dental mesowear, dental microwear, enamel stable isotope (carbon and oxygen), and coprolite/palynology analyses, and compare our results to other penecontemporaneous Eurasian sites. Older sites from this region, Grăunceanu and La Pietriş, both dating to 2.2–1.9 Ma, are reconstructed as being primarily open, though with some nearby woodlands and significant water resources. Fântâna lui Mitilan, which is younger (1.8–1.1 Ma), is reconstructed as slightly more closed, though still relatively open in nature. These results are similar to reconstructions for other Early Pleistocene Eurasian sites, including ones with and without hominins, suggesting that hominins were likely not inhibited from dispersing across Eurasia due to environmental constraints at this time.

早更新世被认为是全球气候和环境发生重大变化的时期，其中包括干旱不断加剧，草原显着扩散以及大量动物迁徙和散布。重要的是，这是欧亚大陆首次发现人乳清蛋白。重建这段时间内存在的环境类型对于理解哺乳动物是必不可少的，包括人参素，相对于气候变化的扩散方式。提议在整个欧洲分布的走廊是多瑙河。在这里，我们采用多代理方法，描述了罗马尼亚南部多瑙河支流之一的2.2至〜110万年前（Ma）的古环境，包括分类学上的均势主义，牙科中磨损，牙科微磨损，搪瓷稳定同位素（碳和氧），以及coprolite / palynology分析，并将我们的结果与其他近现代的欧亚大陆地点进行比较。来自该地区的较早遗址，Grăunceanu和LaPietriş的历史可追溯至2.2-1.9 Ma，虽然附近有一些林地和大量的水资源，但它们被重建为主要开放的土地。较年轻（1.8-1.1毫安）的Fântânalui Mitilan，虽然在自然界中仍相对开放，但被重建为稍微封闭一些。这些结果与其他早期更新世欧亚大陆遗址的重建相似，包括有和没有人乳素的站点，这表明由于当时的环境限制，人乳素可能不会受到抑制而无法在整个欧亚大陆上分散。尽管附近有一些林地和大量的水资源，但重建后的建筑基本上是开放的。较年轻（1.8-1.1毫安）的Fântânalui Mitilan，虽然在自然界中仍相对开放，但被重建为稍微封闭一些。这些结果与其他早期更新世欧亚大陆遗址的重建相似，包括有和没有人乳素的站点，这表明由于当时的环境限制，人乳素可能不会受到抑制而无法在整个欧亚大陆上分散。尽管附近有一些林地和大量的水资源，但重建后的建筑基本上是开放的。较年轻（1.8-1.1毫安）的Fântânalui Mitilan，虽然在自然界中仍相对开放，但被重建为稍微封闭一些。这些结果与其他早期更新世欧亚大陆遗址的重建相似，包括有和没有人乳素的站点，这表明由于当时的环境限制，人乳素可能不会受到抑制而无法在整个欧亚大陆上分散。