Demospongea

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Demospongea

a class of sponges which contain silica or spongin spicules -commercial sponges.
References in periodicals archive ?
"The combined Neoproterozoic demosponge sterane record, showing 24-ipc and 26-mes steranes co-occurring in ancient rocks, is unlikely attributed to an isolated branch or extinct stem-group of demosponges," Love said.
"Rather, the ability to make such unconventional steroids likely arose deep within the demosponge phylogenetic tree but now encompasses a wide coverage of modern demosponge groups," he said.
Another demosponge Tethya wilhelma Sara, Sara, Nickel & Brummer, 2001 explores the environment in a similar manner.
Developmental expression of transcription factor genes in a demosponge: insights into the origin of metazoan multicellularity.
The demosponge order Verongida includes sponges that are distributed across the globe.
Young, "Effects of the duration of larval life on postlarval stages of the demosponge Sigmadocia caerulea," Journal of Experimental Marine Biology and Ecology, vol.
Schupp et al., "Chitin-based scaffolds are an integral part of the skeleton of the marine demosponge Ianthella basta," Journal of Structural Biology, vol.