The following points highlight the three main classes of Phylum Porifera.. . The examples are Spongia, Euspongia (Bath sponge), Hippospongia (Horse .
Start studying Phylum Porifera.. Sponge fossils are among the oldest know animal fossils. Common representatives of Phylum Porifera. Bath sponges.
basal grade (phylum Porifera), the sponges; Radiata that includes phyla Ctenophora. small marine sponge with calcareous spicules; member of class Calcera;. is the primary structural material for the common bath sponges (
. to the biology, classification and ecology of sponges, the phylum Porifera.. groups of invertebrates, due to their usefulness in the bath many people who care. . Phylum Porifera Class Calcarea Order Calcinia Order Calcaronia Class .
Phylum Porifera includes three classes, chiefly based on the type of its. Example: Euspongia (Bath sponge), Thena, Cliona, Spongilla (Fresh water sponge).
I. Class: Demospongea The building material consists of spongin with or without. Order: Hadromerida Representatives of this order have monaxonal. The 'bath sponge' Euspongia officinalis, which consists of spongin, belongs to the Order. Phylum: Porifera 46 Class: Demospongea Order: Lithistida (stony sponges) .