GUWAHATI: Evidence suggesting that Northeast India was once part of a vast ocean has gone missing. A partially fossilized jaw and teeth, believed to belong to a ...
Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their habitat.
For many years, it has been widely believed that fossils no longer contained their original organic molecules as the fossilization process was thought to destroy them. Now, a groundbreaking study, led ...