Tuesday, February 11, 2014

Technological advancements that have helped scientists identify the platypus

The Platypus was first described in 1799 in Shaws naturalists medley along with the koala, Kangaroo, wombat and emu. The most curious was the paddlefish. Since its first discovery in that location has been much debate as to whether it is a mammalian and how it should be classified.         The platypus is a primitive mammal that has many an new(prenominal)(prenominal) an(prenominal) features that cave in it from former(a) mammals-it lays eggs, in that location is an absence raptus of true dentition and an absence of mammary glands, although it has special glands that expel milk. It has fur like other animals, single if it has a bankers bill like the bill of a duck, webbed feet and a cover like a beaver.         A dried platypus genuflect has been sent to England in 1798 and was considered to be fake.         Up until 1884 there was suspense about how the platypus reproduced. In 1884 Caldwell solved the problem by capturing a female with eggs.          about 1904 the scientific Ameri flock describe that there are many mammals that do not ingest teeth when adults.         Up until 1973 there was uncertainty about the platypus being able to govern its body temperature like other mammals. Recent research shows that it can regulate body temperature but the mechanism is underdeveloped.         There are two living groups: The platypuses and the echidnas. The only Cretaceous mammal cognize for Australia is also a monotreme, Steropodon galmani, a platypus-like animal that might be more appropriately determined in a family of its own.         Until 1971, an intellect of the history of Australias platypus was non-existent. away from the fact that it was a monotreme and only known from Australia, every else was mystery. Then ternary major(ip) discoveries were made: two molar teeth of Obdurodon insignis, a 25 million-year-old platypus from the Tirar i desert; a call fragment with three teeth ! of sterepodan galmani a... If you want to get a full essay, post it on our website: OrderEssay.net

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