Parazoa
From Wikipedia, the free encyclopedia.
The Parazoa are an ancestral subkingdom of the animals, literally translated as 'beside the animals.' Parazoans differ from their choanoflagellate ancestors in that they are macroscopic and have differentiated cellss, but unlike "true animals" (Metazoa), they do not have tissuess. The only surviving parazoans are the sponges.
