In a river of eastern Brazil, an “armored” creature swam along searching for the next meal to sink its “copper colored” teeth ...

But being the first does not mean it is the oldest. That title goes to a marine animal called the placoderm, also called an armoured fish. It existed 400 million years ago. It was uncovered in ...

Among living fossil fish, the coelacanth is the most famous ... trunk from the underside of its head and whose body is armored with rows of thick plates. An adult Pacific sturgeon can weigh ...