Poriferans
Sponges. Phylum Porifera – “pore-bearers” (although now sponges are in multiple phyla) Sponges Tiny openings, pores, all over the body Cambrian Period.
Poriferans. Phylum Porifera Phylum Porifera – “pore-bearers” Sponges Tiny openings, pores, all over the body Cambrian Period – 540 m.y.a.; oldest and.
