[7] This view has not been supported by later work using larger datasets and new techniques for phylogenetic inference, which tend to support sponges as monophyletic, with Homoscleromorpha grouping together with Calcarea.

[8][9] On the basis of molecular and morphological evidence, the two families Plakinidae and Oscarellidae have been reinstated.

[6] The spiculate genera in this group are Aspiculophora, Aspiculortis, Corticium, Placinolopha, Plakina, Plakinasterella, Plakortis and Tetralophophora.

Homoscleromorpha are exclusively marine sponges that tend to encrust on other surfaces at shallow depths.

These sponges typically inhabit shady locations, under overhangs and inside caves.