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Stories about: monotreme

8 Amazing Things About the Platypus 1. The platypus represents one of the most peculiar living mammals. And beyond peculiarity, it is really the most primitive living mammal, together with its relatives, the echidnas, forming the group Monotrema ("one orifice", as they have only the cloaca). They have many traits still common to reptiles, but not found... 21 February 2008 14:06 GMT Platypuses Roamed with the Dinosaurs! When the first platypus furs were brought to Europe, people thought that duck bills had been glued to the skins. The platypuses and the four current echidna species are the only living "monotremes," mammals with reptilian traits as they lay eggs and have a cloaca and three bones in the shoulder girdle (the other mamm... 24 January 2008 02:58 GMT