 Another feature of the Migration Period that had far-reaching consequences was the development of the first Scandinavian animal art.Inspired by provincial Roman chip-carved belt mounts decorated with lions and dolphins along the edges, Scandinavian artisans of the Migration Period developed first the Nydam Style, and then the highly abstract and sophisticated Style I from c. 450 AD onward.The Migration Period was long believed to have been a time of crisis and devastation in Scandinavia.