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54 BCE
The first stage
Sinonyx (meaning"Chinese claw") is a an extinct superficially wolf-like ungulate Mesonychid mammal from the late Paleocene of China that lived about 54 million years ago. They are considered relatives of whales. www.talkorigins.org/features/whales -
50 BCE
The third stage
Ambulocetus (meaning"walking whale") is an early cetacean like mammal that lived 50 million years ago. It gets its name from it's short limbs and large feet that are used for swimming -
48 BCE
The second stage
Indohyus is a genus of extinct digitigrade artiodactyl that lived 48 million years ago and is known from Eocene fossils from Asia and is an ancestor of whales https://en.wikipedia .org/ -
35 BCE
The fourth stage
Basilosaurus (meaning"king lizard") is a prehistoric cetacean that live in the Late Eocene Period, 40 to 35 million years ago. It is a whale like cetacean that swam in the ocean to catch fish
https://en.wikipedia.org -
33 BCE
The fifth stage
Dorudon (meaning"Spear tooth") is an genus of extinct basilosaurid ancient whales that lived alongside Basilosaurus, 40.4 to 33.9 million years ago. They were about 5 meters long and fed on small fish and mollusks
https://en.wikipedia.org -
The final stage
Humpback whales (Megaptera noveangliae) is a species of baleen whale that had a distintictive shape, long pectoral fins and a knobbly head
