#[http://www.washingtonpost.com/national/health-science/fossil-reveals-transitional-link-from-fins-to-feet/2014/01/13/b02100c6-7a3a-11e3-8963-b4b654bcc9b2_story.html Washington Post]
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===Why the platypus will never have a stomach===
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Researchers have found that the animals without stomachs have completely lost the complex genes required for gastric digestion. Click [http://www.mnn.com/earth-matters/animals/stories/why-the-platypus-will-never-have-a-stomach here] to read more.