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University of Waterloo
BIOL 359
Jonathan Witt

How whales originally evolvedIn a sense theyre our alter egos living in the sea as we live on landthey also have very developed brainsPaleontologists found the ear of a whale on the skull of an animal resembling a wolfWhales evolved from land mammalsSahara desert is one of the driest places on earth but there used to be a sea where this dry place was used to contain the southern Meditarranean seaFound whale skeletons here over 40 million years oldWhale valley was one a protected baylagoon that was separated from the open sea perhaps whales birthed their young there and went there to dieBassilosaurus bones were found there but this wasnt important bc it was already knownBassilosaurus has something that modern whales lostthey had a pelvis knee cap and toes a complete set of leg bonesThis was evidence that whales had once been 4 legged animalsThe earliest ancestor of whales is a 50 million
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