c. 550 – 600
Wheel motifs with three and four spokes shaped like animal heads were common throughout all the Germanic styles preceding the Viking Age. This design is a predecessor to similar motifs in the following styles all up to the end of the Viking age. But sun-wheel motifs was a popular motif even long before the Germanic Iron age as is evident from many Nordic Bronze age (c. 1700-500 BC) items like the Trundholm sun chariot. This type of motif is found throughout Scandinavia.
The design is based on several variations of relief brooches decorated with protruding animal heads and filled with vine-like spiral patterns, striations, and animal bodies and heads. Interlacing patterns of animal bodies are still rare in Style I. Instead, a cornucopia of different textures and shapes create sprawling ornamentation where it is often hard to distinguish the individual parts. This type of motif is found throughout Scandinavia.