せいじゅうかこう 正獣下綱 LinksSentence search for 正獣下綱Sentence search for せいじゅうかこうKanji details for 正, 獣, 下 and 綱Edit in JMdict Noun1. Eutheria (mammalian infraclass)See also 真獣下綱 Discussions Log in to talk about this word.