...Acanthodii is one of the most primitive jawed fishes whose fossils have been discovered from the Silurian to Permian periods of the Paleozoic era. They are called acanthodii because they have sharp spines on their dorsal, pectoral and anal fins. (Some books say sticklebacks, but sticklebacks are a completely different fish that belong to the Teleostei superfamily of the Actinopterygii class of bony fishes.) *Some of the terminology that mentions "Acanthodii" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…古生代のシルル紀から二畳紀にかけて化石が発見される最も原始的な有顎魚類の1綱Acanthodii。背びれ,胸びれ,しりびれなどに鋭いとげがあるので棘魚類とよばれている(トゲウオ類と書かれている本もあるが,トゲウオ類は現生の硬骨魚綱条鰭(じようき)亜綱真骨上目に属するまったく別の魚類である)。… ※「Acanthodii」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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