Ancient trackways in seabed mud show animals moved purposefully 10 million years before the Cambrian Explosion.

"Cambrian Explosion: New timeline for appearances of skeletal animals in fossil record." ScienceDaily. ScienceDaily, 10 November 2010. <www.sciencedaily.com / releases / 2010 / 11 / 101110091115.htm>.

A New Timeline For The Cambrian Explosion. The study, published in the journal Geology, introduces evidence that animals with complex body structures were thriving as early as 545 million years ...

Meanwhile, authors revised the Cambrian chronostratigraphy of China and proposed a new Xiaotanian Stage for the Cambrian Stage 2 of China. In addition, ...