Cornacuspongida

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cornacuspongida

 

the largest order of sponges (Porifera). The skeleton consists of monaxon siliceous spicules and an organic substance, spongin, or only of spongin fibers. The canal system is of the leucon type. Most Cornacuspongida are colonial, with colonies having the form of crustlike or pillow-shaped growths or tubular, funnel-shaped, or bushy formations. The height of a colony is up to 0.5 or more. Cornacuspongida are found from the tidal zone to the ultra-abyssal zone. In the salt and fresh waters of the USSR there are about 220 species; representatives of the genera Halichondria, Haliclona, Hymeniacidon, Mycale, Myxilla, and Tedania are common.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.