Portuguese
metazoários Multicellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system.
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The effort also fits well with plans to ultimately sequence all orders of the Metazoa.
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Man's ancestors are Gastraeads, like the simplest of the actual Metazoa (Prophysema, Olynthus, Hydra, Pemmatodiscus).
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Their history should be, in terms of their own unit, as punctuational as the history of sexual Metazoa.
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But in the second division of the animal kingdom also, the Metazoa, there is at first no nervous system.
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The gastraea theory has now convinced us that all the Metazoa or multicellular animals can be traced to a common stem-form, the Gastraea.