1) Subkingdom 2) Subkingdom parazoa 
The Parazoa are an ancestral subkingdom of animals, literally translated as `beside the animals`. Parazoans differ from their choanoflagellate ancestors in that they are not microscopic and have differentiated cells. However, they are an outgroup of the animal phylogenetic tree being that they do not have tissues or organs. The only surviving pa.....
(from the article `animal`) Although the two phyla in this subkingdom, Porifera (sponges) and Placozoa, lack clearly defined tissues and organs, their cells specialize and ...
A subkingdom that includes the sponges (phylum Porifera), considered by many zoologists to be intermediate between the subkingdoms Protozoa and Metazoa. ... (05 Mar 2000) ... 
Type: Term Pronunciation: par′ă-zō′ă Definitions: 1. A subkingdom that includes the sponges (phylum Porifera), considered by many zoologists to be intermediate between the subkingdoms Protozoa and Metazoa.
[n] - multicellular organisms having less-specialized cells than in the Metazoa
Parazoa A rarely used taxon of the animal kingdom at one time erected to contain the phylum Porifera, in distinction from the Eumetazoa containing all other metazoan animals.
subkingdom Parazoa noun multicellular organisms having less-specialized cells than in the Metazoa; comprises the single phylum Porifera