When did whales first start to exist?

Published by: jack 2009-01-07

when ...like 47 million years ago? im not sure

How do we love Baja? Let us count the whales - Travel - San Luis Obispo::
impressive because black jackrabbits exist nowhere else in the and if this is starting to read like were holding back before springing the None did.
http://www.sanluisobispo.com/living/travel/story/14008.htmlHOME

Over 50 million years ago during the Eocene Epoch of the Tertiary period
They evolved from a semiaquatic predatory animal called ambilocetus. The descendants of ambilocetus quickly evolved into a marine fish eating animal, within 5 million years they evolved into the earliest whales, a creature known as basilosaurus.

How Whales Lost Their Legs - Achenblog::
Even tried to start a seventh-grade science club. Geeks? Sure, but smart geeks. First, humans did not evolve from chimpanzees or any other modern ape.
http://blog.washingtonpost.com/achenblog/2006/05/how_whales_lost_their_legs.htmlHOME

At last a series of fossil discoveries has unveiled whales� � distant past. Paleontologists can suddenly trace the most colossal animals ever to appear on Earth step-by-step back to their beginnings early in the Eocene epoch, often referred to as the dawn of the age of mammals, which lasted from about 55 million to 34 million years ago.

Whales probably first became fully aquatic sometime in the Eocene. Whales known from the Eocene include Basilosaurus and Dorudon.