Genus. Of class Hexactinellida. Reef builder from Devonian to Carboniferous.
Appearance of Porifera
sponges with silicon spicules
sponges with spicules usually made of spongin. Includes freshwater poriferans.
sponges made of calcium carbonate, doesn't necessarily have spicules.
spiky structure that plays a role in structural support of sponges
small pore where water enters sponge.
inner chamber where food is filtered from water.
large pore where filtered water exits.
flagellated cells in spongocoel that filter food from water.
epithelial cells that line outside of sponge.
connective layer that acts as a shared, secreted skeleton
Genus. Of class Calcarea. Lived from Silurian to Devonian.