Parazoa

Parazoa is a Sub-Kingdom under the Kingdom Animalia. The only surviving Parazoans are the sponges, which belong to the phylum Porifera, and the Trichoplax in the phylum Placozoa.

Characteristic Features

 * Do not have tissues or organs
 * No body symmetry (are asymmetrical)
 * Paraphyletic

Further Classification

 * Phylum Porifera
 * Phylum Placozoa