The Pontic–Caspian steppe is the vast steppeland stretching from the northern shores of the Black Sea (called Euxeinos Pontos [Εὔξεινος Πόντος] in antiquity) as far east as the Caspian Sea, from Moldova and western Ukraine across the Southern Federal District and the Volga Federal District of Russia to western Kazakhstan, forming part of the larger Eurasian steppe, adjacent to the Kazakh steppe to the east. It is a part of the Palearctic temperate grasslands, savannas, and shrublands ecoregion of the temperate grasslands, savannas, and shrublands biome.