Life
Dinosaur teeth hold first clues to migration
Some 150 million years ago, vast herds of sauropods made seasonal migrations out of the dry floodplains of the western US and up into the greener highlands
News
Advertisement
Some 150 million years ago, vast herds of sauropods made seasonal migrations out of the dry floodplains of the western US and up into the greener highlands
Newly discovered traces of soft tissue provide unprecedented insights into how animals that died millions of years ago looked and lived. Jeff Hecht reports