Mammalia
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Mammalia adalah hewan yang memiliki kelenjar susu untuk menyusui anaknya. Pohon evolusi mamalia disertai sederetan pemisahan, dimulai dari berpisahnya Triconodonta, di lanjutkan dengan pemisahan Monotremata dan Multituberculata, Kemudian Marsupialia. Sehingga tersisa dua cabang utama, yaitu
Palaeoryctoid
Eutheria

Referensi :
Durham University (2006, October 13). New Mammal Species Discovered In Europe. ScienceDaily. Retrieved January 4, 2009, from http://www.sciencedaily.com­ /releases/2006/10/061013100520.htm
Leiden University (2007, November 9). New Species Of Peccary — Pig-like Animal — Discovered In Amazon Region. ScienceDaily. Retrieved January 4, 2009, from http://www.sciencedaily.com­ /releases/2007/11/071105153607.htm
Wiley-Blackwell (2008, March 10). Fossilized Giant Rhino Bone Questions Isolation Of Anatolia, 25 Million Years Ago. ScienceDaily. Retrieved January 4, 2009, from http://www.sciencedaily.com­ /releases/2008/03/080310095806.htm
Public Library of Science (2007, October 10). Early Apes Walked Upright 15 Million Years Earlier Than Previously Thought, Evolutionary Biologist Argues. ScienceDaily. Retrieved January 4, 2009, from http://www.sciencedaily.com­ /releases/2007/10/071009212545.htm
Carnegie Museum Of Natural History (2006, February 24). Scientists Discover First Swimming Mammal From The Jurassic. ScienceDaily. Retrieved January 4, 2009, from http://www.sciencedaily.com­ /releases/2006/02/060224195600.htm

Sumber gambar : http://www.tolweb.org/Mammalia

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