The period succeeding the fall of the Roman Empire is known as the Germanic Iron Age, and it is divided into the early Germanic Iron and the late Germanic Iron Age, which in Sweden is known as the Vendel Age, with rich burials in the basin of Lake Mälaren. The early Germanic Iron Age is the period when the Danes appear in history, and according to Jordanes, they were of the same stock as the Swedes ("suehans", "suetidi") and had replaced the Heruls.