"Eumetazoa (Greek: εὖ [eu], well + μετά [metá], after + ζῷον [zóon], animal) or Diploblasts, or Epitheliozoa, or Histozoa are a proposed basal animal clade as a sister group of the Porifera. The basal Eumetazoan clades are the Ctenophora and the ParaHoxozoa. Placozoa is now also seen as a Eumetazoan in the Parahoxozoa.
Several other extinct or obscure life forms, such as Iotuba and Thectardis appear to have emerged in the group.[10] Characteristics of eumetazoans include true tissues organized into germ layers, the presence of neurons, and an embryo that goes through a gastrula stage." - (en.wikipedia.org 24.09.2019)
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