What are the three classes of sponges?

3 Main Classes of Phylum Porifera. Article Shared by. ADVERTISEMENTS: The following points highlight the three main classes of Phylum Porifera. The three classes are: 1. Calcarea or Calcispongiae— (Calcareous Sponges) 2. Hexactinellida or Triaxonida or Hyalospongiae—(Glass Sponge) 3. Demospongiae. read more

ADVERTISEMENTS: The following points highlight the three main classes of Phylum Porifera. The three classes are: 1. Calcarea or Calcispongiae— (Calcareous Sponges) 2. read more

The classification below, which refers to the three classes of living sponges, is adapted from that of E. Topsent as modified by C. Levi on the basis of embryological data; it is accepted by most experts in the field. read more

The phylum Porifera, which means"pore bearing," consists of three classes of sponges, which together contain more than 5,000 species. While these sponges share many common characteristics, each class has distinctive traits that set it apart from the others. read more