Animals may have evolved 200 million years earlier than we thought

Recent scientific research posits that the timeline for animal evolution may need a significant revision, potentially shifting the origin of animal life back by 200 million years. Previously, many models suggested that animals emerged much later, but new analyses indicate they could have evolved as early as 800 to 700 million years ago. This timeframe aligns with the era preceding or concurrent with the extreme climatic events known as Snowball Earth. Researchers suggest that the lack of clear fossil evidence from this period is likely due to the soft-bodied nature of these early organisms, which were rarely preserved in the geological record. This hypothesis challenges existing assumptions about the tempo of early metazoan radiation and the environmental conditions that supported the rise of the first animal life.