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Mammalia

Pronunciation: ma-ma'le-a

Definition: The highest class of living organisms; it includes all the vertebrate animals (monotremes, marsupials, and placentals) that suckle their young, possess hair, and (except for the egg-laying monotremes) bring forth living young rather than eggs.

[L. mamma, breast]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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