placental mammal

any member of the mammalian group (cohort Placentalia) characterized by the presence of a placenta, which facilitates exchange of nutrients and ... [8 related articles]
Found on http://www.britannica.com/eb/a-z/p/75

Placental mammal

Mammals which develop a persistent placenta, i.e. all mammals other than marsupials and monotremes.
Found on http://www.blackwellpublishing.com/Townsend/Glossary/GlossaryP.html
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