What was the geological era 550 million years ago?

Around 550 million years ago, the Earth was in the late Ediacaran period, which is part of the Neoproterozoic era. This period is characterized by the appearance of the first complex multicellular life forms, including the Ediacaran biota, which consisted of soft-bodied organisms. This era set the stage for the Cambrian explosion, which followed shortly after, leading to a rapid diversification of life. The late Ediacaran is crucial for understanding the evolution of early life on Earth.