Triassic rocks do not occur in Kentucky. At that time, Kentucky was probably covered by thin silts and sands, which have since been completely eroded away. During the Triassic, Kentucky was probably hot and arid, but areas with abundant plant life existed. Large mammal-like reptiles and other reptiles probably lived in Kentucky at that time. During the later part of the Triassic, early dinosaurs probably lived in Kentucky. The mass of continents called Pangea was still largely united, but some of the continents were starting to separate.