Climacter

Japanese: Climatius
Climacter

…The jaw structure of acanthognathic fishes has been well studied, and it is believed that the jaw bones were formed by the modification of the anterior gill bones of the jawless fishes. Representative acanthognathic fishes include Climatius, which has been found in strata from the Silurian to the early Devonian, and Acanthodes , which is from the Permian. They range in size from a few centimeters to tens of centimeters. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…棘魚類のあごの構造はよく研究されているが,無顎類の前方のえらの骨のうち前方のものが変化してあごの骨が生じたと考えられている。棘魚類の代表的なものにはシルル紀からデボン紀初期にかけての地層から発見されているクリマティウスClimatiusや二畳紀のアカントデスAcanthodesなどがある。大きさは数cmから数十cmのものまである。…

※「Climatius」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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