When Whales Walked Video
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We know whales as graceful giants bound to the sea. But what if we told you there was actually a time when whales could walk.
Thanks to Lucas Lima and Studio 252mya for their illustrations. You can find more of Lucas' work here: https://252mya.com/gallery/lucas-lima
Produced for PBS Digital Studios.
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References:
http://web.neomed.edu/web/anatomy/Thewissen/whale_origins/index.html
https://www.researchgate.net/publication/255721304_Ambulocetus_natans_an_Eocene_Cetacean_Mammalia_from_Pakistan
https://link.springer.com/article/10.1007%2Fs12052-009-0135-2
http://www.amnh.org/explore/news-blogs/news-posts/a-walking-whale-ambulocetus/
http://www.prehistoric-wildlife.com/species/a/ambulocetus.html
http://evolution.berkeley.edu/evolibrary/article/evograms_03
http://stories.anmm.gov.au/whale-evolution/
http://www.smithsonianmag.com/smithsonian-institution/take-deep-dive-reasons-land-animals-moved-seas-180955007/
http://repository.ias.ac.in/4642/1/316.pdf
https://link.springer.com/chapter/10.1007%2F978-1-4899-0159-0_14
https://www.britannica.com/science/Eocene-Epoch
http://ngm.nationalgeographic.com/2010/08/whale-evolution/mueller-text/4
http://www.pbs.org/wnet/nature/ocean-giants-going-aquatic-cetacean-evolution/7577/
https://www.theatlantic.com/science/archive/2017/05/why-did-the-biggest-whales-get-so-big/527874/
https://www.youtube.com/watch?v=QLNn7tZJfNY
http://www.pnas.org/content/96/18/10261.short
https://www.sciencedaily.com/releases/2009/03/090318153803.htm
https://www.nature.com/news/2007/071218/full/news.2007.388.html
https://books.google.com/books?id=udCnKce9hfoC&pg=PA391&lpg=PA391&dq=astragalus+bone+artiodactyla&source=bl&ots=vN2lvOVMWi&sig=xlwWl2JECUvYPl3aofimxAjwVrw&hl=en&sa=X&ved=0ahUKEwjGsNG0zvDVAhUUUWMKHTbAACcQ6AEImwEwFw#v=onepage&q=astragalus%20bone%20artiodactyla&f=false
http://www.blc.arizona.edu/courses/schaffer/449/god%20in%20the%20gaps/early%20whale%20hands%20and%20feet.pdf
https://phys.org/news/2005-01-scientists-link-whale-closest-relative.html
http://www.pnas.org/content/96/18/10261.short
https://link.springer.com/article/10.1007%2Fs12052-009-0135-2
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