Mayomyzon

Japanese: Mayomyzon
Mayomyzon

…Hagfish have one pair or 6-15 pairs of gill slits, and are saprophytic. The oldest lamprey fossil is Mayomyzon , discovered in Mayon Creek, Illinois, USA, from the late Carboniferous period of the Paleozoic era, and its form is almost identical to that of modern lampreys. Paleozoic jawless fish are called ostracoderms, and belong to the so-called armored fishes. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…メクラウナギ類は鰓孔は1対か6~15対で,腐食性である。ヤツメウナギ類の最古の化石はアメリカのイリノイ州メゾンクリークで発見された古生代石炭紀後期のマヨマイゾンMayomyzonで,すでに現生のものとほとんど異ならない形態をしていた。 古生代の無顎類は甲皮類ostracodermとよばれ,いわゆる甲冑魚(かつちゆうぎよ)のなかまである。…

※「Mayomyzon」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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