Parazoa
The tissue lots ( Parazoa ), Grant & Todd 1838, are a traditionally used taxon within the Animals ( Animalia ), which mainly consists of the sponges ( Porifera ). In addition to these, only the Placozoa with the sole type Trichoplax adhaerens are included. The similarities of tissue lots are, as the name implies, negatively defined primarily: by the absence of specialized nerve or muscle tissue, organs and any of basement membranes between connective tissue and epithelium.
Modern phylogenetic systematics, the two subordinate taxa no longer together.
System
The following diagram shows a classification according to the conventional system:
- Multicellular animals ( Metazoa ) Loose tissue ( Parazoa ) Sponges ( Porifera )
- Placozoa