Multicellular heterotrophic eukaryotes comprise over 1.5 million living species. Most animals have blastula as one of the embryonic stages of development (fig 1).
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Fig. 1. A general scheme of blastulation: 1- morula stage, 2- blastula stage (by Wikipedia community 2018)

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Phylogeny of Animalia (Metazoa) (by Tree of Life Project 2018)