The largest of these, Deinosuchus riograndensis, lived on the western side, along the east coast of an island called Laramidia. Bordered on the west by the Pacific Ocean, Laramidia made up less ...

An artist's impression of the Late Cretaceous crocodilian Deinosuchus riograndensis and a much smaller, early alligator relative. Márton Szabó More than 75 million years ago, a giant reptile ...