Charles Darwin worried that the fossil record looked strangely abrupt, with complex animals appearing in a geological instant ...

Dinosaur eggshells, once treated as background scenery in fossil digs, have turned out to be some of the most precise timekeepers in the deep past. By decoding the chemistry locked into these fragile ...

This 30-million-year-long gap is actually rather helpful to Darwin. It means that there was plenty of time for the ancestor ...