A dolphin fossil believed to be at least 25 million ... under five minutes as an ancestor of whales and dolphins. “Their teeth were a little different, their habits were a little.

teeth and other skull parts. Because dolphins use ultrasonic waves to sense their surroundings, their ears are characterized by complicated structures. The fossil bore no similarities to other ...

Two Paleontology and Evolution students from the University of Bristol have undertaken the first ever study which describes ...