noun
Eutheria (mammalian infraclass)
Scientific taxonomic term for the infraclass of placental mammals. Used in biology and zoology contexts. The synonym 真獣下綱 is also used.
See also: 真獣下綱
正獣下綱には、ヒトを含む多くの哺乳類が分類される。
Many mammals, including humans, are classified under Eutheria.
Synonym for 正獣下綱; both refer to Eutheria. 真獣下綱 is also a scientific term, with no significant difference in meaning or register.
Compound of 正 (true) + 獣 (beast) + 下綱 (infraclass), a direct calque of the taxonomic name Eutheria (eu- 'true' + theria 'beasts').