Demospongiae

Japanese: Demospongiae
Demospongiae

…They are generally large and found in the deep sea, including the staghorn sponge and the staghorn sponge. (3) The class Demospongiae includes all sponges other than the calcareous sponges and the hexactinellid sponges. The skeletons of some sponges are made up of a combination of large siliceous bone fragments, some are made up of siliceous bone fragments and sponge tissue, and some have no bone fragments but are made up of sponge tissue containing sand grains.

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…一般に大型で,深海産のものが多く,ホッスガイ,カイロウドウケツカイメンなどが含まれる。 (3)尋常海綿綱(普通海綿綱)Demospongiaeは石灰海綿類と六放海綿類以外のもの全部を含んでいる。骨格にはケイ質の主大骨片が組み合わさったもの,ケイ質骨片と海綿質とで形づくるもの,砂粒などを含んだ海綿質が骨格をつくって骨片をもたないものなどがある。…

※「Demospongiae」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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