worms

Japanese: worms
worms

… [Minoru Imajima]
【fossil】
The most common fossils of annelids are polychaetes, and the majority of fossils are the jaws, teeth, external tubes, and trace fossils of the hard parts of the body. Because the classification of these fossils is unclear, paleontology sometimes uses the term worms. In strata estimated to be from the end of the Proterozoic era in America and South Australia, tracks and burrows thought to be made by annelids have been found, and certain annelid bodies and tubes have been found in the Cambrian system in various places, and jaws and scolecodonts have been found in the Ordovician system.

*Some terminology explanations that mention "worms" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…【今島 実】
【化石】
 環形動物で産出化石のもっとも多いものは多毛類で,化石として保存されるのは,大部分が体の硬質部のあご,歯,外側の管および生痕化石である。これらの化石は分類上の位置が不明りょうなため,古生物学では環虫類wormsという術語を使う場合がある。アメリカや南オーストラリアの原生代末期と推定される地層からは,環形動物によると思われるはい跡や巣穴が発見されており,また各地のカンブリア系からはある種の環形動物の体と管が,またオルドビス系からはあごや環虫歯scolecodontが発見されている。…

※「worms」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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