Dinichthys (English spelling)

Japanese: ディニクチス(英語表記)Dinichthys
Dinichthys (English spelling)
A large fish that lived in the Paleozoic Era, belonging to the Placodermi class. The famous Dinychthys, which appears in old textbooks and reference books, has recently been renamed Dunkleosteus . The head and thorax are covered with thick, sturdy bone plates. The jaws have no true teeth, but the jaw bone plates are shaped like hatchets and function like teeth. The armor on the head and thorax are articulated on the left and right sides to allow movement. The rear half of the body is not covered with bony plates.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
古生代に生息していた大型の魚で,板皮綱Placodermiに属する。古い教科書や参考書に掲載されている有名なディニクチスは,最近ダンクルオステウスDunkleosteusという属名に変更された。頭部と胸部は厚い頑丈な骨板で覆われている。あごには本当の歯がなく,顎骨板がなたのような形になって歯のような役目を果たしている。頭部と胸部の装甲は左右で関節していて動くようになっている。体の後半は骨板で覆われていない。

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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