placental mammal

placental mammal

The infraclass of therian mammal species in which females produce a placenta to connect the fetus to the uterus. This enables nutrients and oxygen to get to the fetus and provides a means of eliminating waste products. As a result, placental mammal or eutherian mammals can carry their young within the uterus until late in fetal development. This has a selective advantage because it results in decreased infant mortality. Included in this infraclass are dogs, cats, bears, whales, monkeys, humans, and many other mammals.

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Part of Speech: noun
Synonym(s): Eutheria
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Industry/Domain: Anthropology
Category: Physical anthropology
Company: Palomar College
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