Dunkleosteus

Japanese: Dunkleosteus
Dunkleosteus

…Most placoderms are carnivorous, and the most representative of these are the arthroditic fishes (order Coccosteidae). The most famous is Dunkleosteus , which is thought to have reached a total length of several meters (previously known as Dinychthys). Some arthroditic fishes possessed copulatory organs for internal fertilization, as seen in the cartilaginous fishes, and are thought to include the direct ancestors of the Chondrichthyes. …

*Some of the terminology that mentions "Dunkleosteus" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…板皮類はほとんどが肉食性で,その代表的なものは節頸類(コッコステウス目)である。全長数mに達したと思われるダンクルオステウスDunkleosteusが有名である(昔はディニクチスとされていた)。節頸類の中には軟骨魚類に見られるような体内受精のための交尾器官をもっていたものもあり,軟骨魚綱の直接の祖先を含むと考えられている。…

※「Dunkleosteus」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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