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Kotomora

前ぜん口こう動どう物ぶつ

ぜ
ん
こ
う
ど
う
ぶ
つ

Meanings

1

noun

protostome

Zoological term for animals in which the mouth develops from the blastopore. Contrasts with 旧口動物 (deuterostome).

See also: 旧口動物