Science Fair Project Encyclopedia
Theria
Eutheria
Metatheria
Theria is a subclass of advanced mammals that give birth to live young without using a shelled egg. They have external ears, can suckle on a nipple, and have an ankle specialized for power and range of motion. Therians are often classified by their specialized dentition. Theria means beasts.
03-10-2013 05:06:04
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details


