In 2014, a paleontologist randomly picked up a soccer ball-sized rock in Wyoming ... with the study analyzed the whole place for more fossil burrows. "At this point, we were like, 'Oh my god ...

Numerical ages estimate the date of a geological event and can sometimes reveal quite precisely when a fossil species existed in time. Third, magnetism in rocks can be used to estimate the age of ...

Ammonite fossils, an example is shown here, are sea creatures that became extinct about 65 million years ago. Fossil remains have been found in rocks of all ages. Fossils of the simplest organisms ...

The music-related monikers were originally pet names, says Sutton, because the spike-laden fossils were reminiscent of hairstyles from the punk rock movement, but the names stuck, leading to the ...