placental

Noun

Any animal that is a member of the Placentalia

Japanese Meaning

胎盤類：胎盤を持つ哺乳類（Placentalia）に属する動物。

The conservationists studied a rare placental that had wandered into the northern wetlands.

保護活動家たちは、北部の湿地に迷い込んだ珍しい胎盤哺乳類を調査した。

Sense（1）

Any animal that is a member of the Placentalia

placentals

（ plural ）