SCIENCE
3 min read
74A 165-Million-Year-Old Fossil Could Rewrite the History of Mammals
Scientists have discovered an extraordinary Jurassic fossil in China that reveals how ancient relatives of mammals may have chewed, swallowed, and nursed their young millions of years earlier than previously documented. The discovery challenges the familiar picture of life during the age of dinosaurs and provides new evidence about the origins of some of the most fundamental features of mammals, including humans.
