Shellfish - Kaikairui

Japanese: 貝(介)形類 - かいけいるい
Shellfish - Kaikairui

…The body is completely enclosed on both sides by a bivalve-like carapace or shell, which allows the body to be completely contained within, and so it is sometimes mistaken for a small bivalve. They are also called ostracods or ostracods. They are small crustaceans with shells measuring about 0.5 to 2.5 mm, and there are many species in both freshwater and marine environments.

*Some of the terminology explanations that refer to "ostracod" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…体は二枚貝様の背甲か殻によって,左右より完全に包まれ,この殻の中に完全に体を収めることができ,したがって小さな二枚貝とまちがうこともある。貝形類または介形類ともいう。殻の大きさ0.5~2.5mmくらいの小型の甲殻類で,淡水,海水域ともに多数の種類がある。…

※「貝(介)形類」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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