Archaeologists Just Dug Up a Tiny 3/4-Inch Fossil. It May Be a Major Missing Link in Our ...
Harvard paleontologists Rudy Lerosey-Aubril and Javier Ortega-Hernández dug up what they believe is a 500-million-year-old ...
National Geographic news5 个月
Cambrian Period
Learn more about a time period marked by an intense burst of evolution. 3 min read The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known.