Even if these researchers are a teensy bit optimistic about their pinpoint accuracy, the pattern is clear: The history of life is becoming a field markedly less favorable to hand-waving. And note, in 410,000 years, the transition from the multicellular but simple Ediacaran life forms to the diverse
Source: Researchers: Ediacaran to Cambrian transition took “less than 410,000 years” | Uncommon Descent