Most of the shark’s skeleton was composed of cartilage, which rapidly decays and doesn’t leave behind fossils. Now, all that remains of the magnificent megalodon are teeth, vertebrae and ...

There were 150 teeth preserved within the dental record of the shark skeleton. An incredible fossil of an 8 foot long shark - that would've roamed the Earths oceans about 150 million years ago ...

All of that and still boneless. “We think early sharks developed a cartilaginous skeleton because it better suited their lifestyle,” Emma Bernard, Fossil Fish Curator for Natural History ...

Sharks belong to a group of creatures known as cartilaginous fishes, because most of their skeleton is made from cartilage rather than bone. The only part of their skeleton not made from this soft, ...

In the quiet cliffs of Stevns, Denmark, a 79-year-old amateur fossil hunter split open a piece of chalk last November and ...

Shark skeletons don’t include any bones at all. But their jaws, spinal column and the cartilage surrounding their brain are strengthened by calcium salts, which get deposited into their skeletal ...