Demospongiae

Demospongiae

[dem·ə′spən·jē‚ē]
(invertebrate zoology)
A class of the phylum Porifera, including sponges with a skeleton of one-to four-rayed siliceous spicules, or of spongin fibers, or both.
References in periodicals archive ?
The steroid fossil, 24-isopropylcholestane, or 24-ipc, is a form of a steroid known today from the cellular membranes of a class of sponges, the Demospongiae.
Foster for the poster entitled, "Preliminary investigations of the comparative occurrence of sponge dwelling amphipods in Tedania ignis (Porifera, Demospongiae, Myxillidae) from a turtle grass bed and a red mangrove forest in the Florida Keys, USA.