| Sponge identification is based largely on spicule morphology and care was taken to collect specimens bearing gemmules, as well as somatic tissue. |
| For bone marrow it is important that a first draw, spicule rich sample be collected. |
| Few long marginalia projecting from the oscular margin may belong to an oscular spicule rim. |
| Identification relies on spicule form and arrangement as well as body colour and form. |
| In males, the proximal end of the spicule lacks a dorsal process. |
| The central point of the spicule positioned very close to the innermost shell wall. |
