The researchers also studied fossils of extinct fishes dating back almost 400 million years and saw evidence that some of the oldest jawed fishes had bones with joint cavities for articulated ...

Scientists visited fish markets and ports in search of sharks, ghost sharks, rays and skates caught by fishermen. Take a look at their finds.

A research team led by Neelima Sharma from the University of Chicago examined the anatomy and development of joints in modern cartilaginous fish, such as sharks, and compared them to jawless fish ...

Cartilaginous fish Although little is known about mating systems in sharks and other cartilaginous fishes, there is evidence that some species such as tiger sharks (Galeocerdo cuvier) could be ...

But we’ve learned a lot about the history and evolution of sharks from their fossilised teeth. ‘We think early sharks developed a cartilaginous skeleton because it better suited their lifestyle,’ ...