Concept
Version 8
Created by Boundless
Phylum Porifera
Types of sponges
(a) Clathrina clathrus belongs to class Calcarea, (b) Staurocalyptus spp. (common name: yellow Picasso sponge) belongs to class Hexactinellida, and (c) Acarnus erithacus belongs to class Demospongia.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Biology. November 16, 2013."
http://cnx.org/content/m44663/latest/?collection=col11448/latest
OpenStax CNX
CC BY 3.0.