Fish Diet Linked To Evolution

Chips from 10 million years ago have revealed new insights into fish diets and their influence on fish evolution, according to new research featured in this weekus issue of the journal Science. The chips were found, along with scratches, on the teeth of fossil stickleback fish and reveal for the first time how changes in the way an animal feeds control its evolution over thousands of years. This kind of study has previously not been possible because although fossils preserve direct evidence of evolutionary change over thousands and millions of years, working out exactly what a long-dead fossil animal was eating when it was alive, and establishing a link between feeding and evolution, is very difficult...