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Monotremes

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Monotremes are egg-laying mammals. They split off from other mammals in the Mesozoic era, and though they were once common only two monotreme groups exist today: the echidna and the platypus. Both are exclusively found in Australia.

Subtopics

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
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/
Monotreme - Mammal - Britannica

MonotremeÂ (orderÂ Monotremata),Â 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
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
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
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
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
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
Monotremes Facts, Information, Pictures - Encyclopedia

Get information, facts, and pictures about Monotremes at Encyclopedia.com
http://www.encyclopedia.com/topic/Monotremes.aspx
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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Media

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
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/
Monotreme - Mammal - Britannica

MonotremeÂ (orderÂ Monotremata),Â 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
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
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
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
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
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
Monotremes Facts, Information, Pictures - Encyclopedia

Get information, facts, and pictures about Monotremes at Encyclopedia.com
http://www.encyclopedia.com/topic/Monotremes.aspx
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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Monotremes

Monotremes are egg-laying mammals. They split off from other mammals in the Mesozoic era, and though they were once common only two monotreme groups exist today: the echidna and the platypus. Both are exclusively found in Australia.

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