This means that shark teeth are continuously raining down onto the ocean floor, increasing the chance that they will get fossilised. Teeth are also the hardest part of a shark's skeleton. While our ...

But they do have a cartilage skeleton, a shark-like skull and jaw, and at least some shark-like teeth, which were often fused together.' By the middle of the Devonian (380 million years ago), the ...

They both have a skeleton made of cartilage ... But in these filter feeders, the teeth are tiny and not used in feeding. Shark teeth vary in size and shape according to what they eat.

The researchers also uncovered previously unknown photographs of an Egyptian dinosaur skeleton. These images, taken before ...