Dark muscle in fish, often reddish-brown or gray, is a normal anatomical feature rich in fat and oxygen-binding proteins. While nutritious, this darker flesh spoils faster than white muscle due to ...

Fossilised soft tissues, such as skin and muscle, are exceptionally hard to come by. When you think the chances of an animal being fossilised is less than one in a million - and these usually have ...

A new study has rewritten a key chapter in the story of vertebrate evolution. Researchers from the University of São Paulo (USP) in Brazil and the Smithsonian Institution in the United States have ...