Phylum Porifera : Sponges
Phylum Porifera
| Sponges, stromatoporoids, and
archaeocyathids are included in this part because individual
members within each group share, at least partially, similar
skeletal features and symmetry leading some workers consider
them all as being members of the same phylum. All are
benthic, sessile, suspension-feeders which inhabited a wide
variety of exclusively marine environments throughout much
of the Phanerozoic. |
