A researcher from the University of Chicago said newly identified fish fossils discovered in several European museums might resolve a long-standing question about evolutionary theory.

By WILLIAM MULLEN By William Mullen Chicago Tribune CHICAGO Some dusty fossil fish spotted by a sharp-eyed University of Chicago doctoral student as he rummaged through forgotten corners of museum collections in Europe have solved a question that has long vexed scientists.

By William Mullen, Chicago Tribune Jul. 10--Some dusty fish fossils spotted by a sharp-eyed University of Chicago doctoral student as he rummaged through forgotten corners of museum collections in Europe have answered a question that has long vexed scientists.

CHICAGO _ Some dusty fossil fish spotted by a sharp-eyed University of Chicago doctoral student as he rummaged through forgotten corners of museum collections in Europe have solved a question that has long vexed scientists.

By MARK PRIGG BRITAIN'S fish population is facing a cancer epidemic, government scientists said today. They claim that in some species, up to 25 per cent of the population suffers from liver cancer.