Archaeocyatha

Japanese: Archaeocyatha
Archaeocyatha

…It is a unique marine epiphyte known only from the Early to Early Middle Cambrian Period of the Paleozoic Era. It has been classified into various different classes in the past, but it has recently been classified as an independent animal phylum, Archaeocyatha, which occupies a position close to the phylum Porifera, and is thought to be the only extinct phylum in the animal kingdom. Since the soft body does not preserve as a fossil, there are many unsolved problems. …

*Some of the terminology explanations that mention "Archaeocyatha" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…古生代のカンブリア紀前期から中期初頭にのみ知られる特異な海生の着生動物である。分類上これまで種々異なる部類に扱われてきていたが,最近は海綿動物門に近い位置をしめる独立した動物門Archaeocyathaとされ,動物界の中で絶滅した唯一の門と考えられている。軟体部は化石として保存されないため,未解決の問題が少なくない。…

※「Archaeocyatha」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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