The first whales evolved over 50 mya. They were typical land animals and had long skulls & large carnivorous teeth. From the outside, they don’t resemble modern whales. However, their skulls, particularly in the ear region, strongly resemble those of living whales and are unlike any other mammal.
The first whales evolved over 50 mya. They were typical land animals and had long skulls & large carnivorous teeth. ...
