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Monotreme - Wikipedia, the free encyclopedia
Monotremes are mammals that lay eggs (Prototheria) instead of giving birth to live young like marsupials (Metatheria) and placental mammals (Eutheria).
https://en.wikipedia.org/wiki/Monotreme
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ADW: Monotreme - Monotremata
Monotremes probably split from the lineage leading to other mammals sometime in the Mesozoic. They are often placed in a separate subclass from other mammals, Prototheria.
http://animaldiversity.org/accounts/Monotremata/
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Monotreme - Mammal - Britannica
Monotreme (order Monotremata), any member of the egg-laying mammalian order Monotremata, which includes the amphibious platypus (family Ornithorhynchidae) and the terrestrial echidnas (family Tachyglossidae)
http://www.britannica.com/animal/monotreme
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Do Any Mammals Lay Eggs? - Wonderopolis
Along with four species of echidna (a mammal that looks a bit like a porcupine), the platypus is one of only five species of monotremes in the world. Monotremes are mammals that lay eggs instead of giving birth to live young.
http://wonderopolis.org/wonder/do-any-mammals-lay-eggs
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Monotremes - The Animal Encyclopedia - About
Monotremes are a group of mammals that include echidnas and the platypus.
http://animals.about.com/od/monotremes/p/monotremes.htm
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Monotreme - New World Encyclopedia
Monotremes are egg-laying mammals of the order Monotremata, the only order in Subclass Monotremata (or Prototheria). Monotremes represent one of the three major subdivisions of mammals.
http://www.newworldencyclopedia.org/entry/Monotreme
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Rare Footage of Baby Platypuses Hatching - YouTube
Monotremes are the only mammals left that lay eggs. This video of newly hatched baby platypuses and echidnas is one of few that documents this incredible process.
https://www.youtube.com/watch?v=K5Y2h5zjpWU
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Why Odd Egg-Laying Mammals Still Exist - Livescience
Some mammals still reap a survival benefit from laying eggs.
http://www.livescience.com/5746-odd-egg-laying-mammals-exist.html
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Monotremes Facts, Information, Pictures - Encyclopedia
Get information, facts, and pictures about Monotremes at Encyclopedia.com
http://www.encyclopedia.com/topic/Monotremes.aspx
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Examples of Monotreme Animals - Animals - mom.me
Called boondaburra for centuries by Australian Aborigines, the duck-billed platypus arrived in Europe in 1798, where scientists quickly disregarded the patch-worklike creatures as obvious fakes.
http://animals.mom.me/examples-monotreme-animals-7555.html
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