ocean crossings

    By Nicholas R. Longrich, University of Bath   Why are fossils of duckbill dinosaurs, a North American family, found in North Africa? Dinosaurs couldn’t just walk there. Sixty-six million years ago, when duckbills suddenly appear in Africa’s fossil record, the world’s land masses formed a series of islands. A seaway divided eastern and western North America; Europe was an archipelago. South America, India, Australia and Madagascar were all island […]