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.
These periods saw an explosion in shark and ray diversity, demonstrating their ability to adapt to shifting conditions. Fossil evidence suggests that the diversity of these species fluctuated with ...
The Senate confirmed Doug Burgum as interior secretary late Thursday after President Donald Trump tapped the North Dakota billionaire to spearhead the Republican ...
Sixty-six million years ago, a marine creature, minding its own business at the bottom of a Cretaceous sea, munched on some sea lilies—then didn’t feel too great. Now, a fossil hunter in Denmark named ...