The Cambrian Period by Charles River Editors

https://thebookvoice.com/podcasts/2/audible/236809 to listen full audiobooks. Title: The Cambrian Period Author: Charles River Editors Narrator: Colin Fluxman Format: mp3 Length: 1 hr and 31 mins Release date: 12-23-20 Ratings: 4.5 out of 5 stars, 20 ratings Genres: Evolution & Genetics Publisher's Summary: The early history of Earth covers such vast stretches of time that years, centuries, and even millennia become virtually meaningless. Instead, paleontologists and scientists who study geochronology divide time into periods and eras. The current view of science is that Earth is around 4.6 billion years old, and the first four billion years of its development are known as the Precambrian period.