…A group of mammals in which immature young are born during development and continue to develop by attaching to the nipples of the mother. They are so named because they usually have a brood pouch. They belong to the order Marsupialia of the subclass Metatheria and are also called diuteriate mammals. They are found in Australia, Tasmania, New Guinea (a few in the Solomon Islands, Bismarck Islands, and the Maluku Islands), and South America (one species reaches North America). There are about 271 extant species in 16 families (sometimes 8 families). … *Some of the terminology explanations that mention "Marsupialia" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…発生の途中に未熟な状態で生まれた子が雌親の乳頭に吸いついて発生を続ける哺乳類の1群で,ふつう育児囊があるためこの名がある。獣亜綱後獣下綱有袋目Marsupialiaに属し,二子宮類ともいう。オーストラリア,タスマニア,ニューギニア(少数はソロモン諸島,ビスマーク諸島,モルッカ諸島),南アメリカ(1種は北アメリカまで)に分布し,現生のものは16科(8科とすることもある)約271種がある。… ※「Marsupialia」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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