1. Eurypylous, diplodal or Aphodal choanocyte chambers

2. Large choanocyte chambers (eurypilous, Aphodal, or diploid)

3. The choanocyte chamber s may be eurypylous, diplodal or Aphodal

4. The choanocyte chambers are Aphodal (with a small canal joining the chamber to the exhalant canal)

5. Verticillitidae (Vaceletia) are the only Keratosa with Aphodal choanocyte chambers, while the thorectid + spongiid + irciniid sister group can be distinguished by their diplodal choanocyte chambers, which are apomorphic within the Keratosa (Figure 1).

6. The aquiferous system has a sylleibid-like or leuconoid organization, with eurypylous or Aphodal choanocyte chambers”

7. Choanocyte chambers are large, usually eurypilous (Plakortis, Plakinastrella, Plakina, and Oscarella), and Aphodal or diploid (Corticium, Pseudocorticium)

8. Choanocyte chambers are eurypylous or Aphodal, usually with a radial arrangement around incurrent and excurrent canals (called sylleibid-like arrangement).

9. This family is also characterized by a sylleibid-like or leuconoid aquiferous system harbouring eurypylous or Aphodal choanocyte chambers (Gazave et al., 2010)

10. Whereas the defining cell type for the sponges is the choanocyte, the defining cell type for the Cnidarians is the cnidocyte, or stinging cell.

11. Up to 10% cash back  · Choanocyte chambers are large, usually eurypilous (Plakortis, Plakinastrella, Plakina, and Oscarella), and Aphodal or diploid (Corticium, Pseudocorticium)