MarsupialiayoudaoicibaDictYouDict[Marsupialia 词源字典]
"With plural concord. An order of mammals comprising forms which lack a complete placenta and give birth to very immature young which complete their development while attached to the mother's mammae, typically located in a protective abdominal pouch", Mid 19th cent.; earliest use found in Henry McMurtrie (1793–1865). From scientific Latin Marsupialia from post-classical Latin marsupialis + -a.[Marsupialia etymology, Marsupialia origin, 英语词源]