释义 |
Placentalia
Plac`en`ta´li`a
n. pl. | 1. | (Zool.) A division of Mammalia including those that have a placenta, or all the orders above the marsupials. |
EncyclopediaSeeEutheriaplacentalia
Eu·the·ri·a (yū-thē'rē-ă), A subclass of mammals, excluding monotremes and marsupials, having a placenta through which the young are nourished. [eu- + G. thērion, animal] placentalia An obsolete term for a subclass of mammals that nourish their young via a placenta, now designated as Eutheria. |