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An Infrakingdom in the Kingdom Animalia.


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The Infrakingdom Placozoa is further organized into finer groupings including:


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The Placozoa are a basal form of invertebrate. They are the simplest in structure of all non-parasitic multicellular animals (Metazoa). They are generally classified as a single species, Trichoplax adhaerens, although there is enough genetic diversity that it is likely that there are multiple, morphologically similar species. Although they were first discovered in 1883, a common name does not yet exist for the taxon; the scientific name literally means "flat animals". [more]

More info about the Phylum Placozoa may be found here.


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Last Revised: August 24, 2012
2012/08/24 19:59:05